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Lim Jun Long

PhD Research

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ABOUT DR LIM JUN LONG

Biography - Brief Introduction

Dr. Jun Long LIM received the Bachelor of Engineering, and the Doctor of Philosophy from Nanyang Technological University (NTU), Singapore. His key research interest is in next generation optical fiber sensing system, and it's I.o.T. technology stack. Dr. Lim is a Gemini Certified Educator and frequently promotes science and outreaches in conferences, industries and schools. #limjunlong

Academic CV 📑 https://files.limjunlong.com/cv
DM on Dr Lim's LinkedIn for collaboration 👉 https://www.linkedin.com/in/junlonglim

CONTENT

BOARD MEMBER

BOARD & GOVERNANCE ROLES

ACADEMIC & RESEARCH APPOINTMENTS

RESEARCH

CALL FOR PAPERS

SPECIAL ISSUE: OPTICAL FIBRE SENSING: RECENT ADVANCES AND FUTURE PERSPECTIVES, 2ND EDITION

(CLOSED) CALL FOR PAPERS

SPECIAL ISSUE: OPTICAL FIBRE SENSING: RECENT ADVANCES AND FUTURE PERSPECTIVES

RESEARCH INTERESTS

PATENTS

PUBLICATIONS & IMPACT STATISTICS

MORE ABOUT DR LIM

Certification

Recent Conferences Attended

Professional Profile

BOARD MEMBER

Honorary appointments/ services for grants, proposal evaluation, editorial, technical advisory, governance advisory, professional consultancy and services, etc.

Requests for invitation should be sent to junlonglim@ieee.org. Use the word 'Invitation' in the email subject.
NOTE: All other inquiries will be handled at the discretion of Dr Lim.

Photograph of Dr Lim's figurine

BOARD & GOVERNANCE ROLES

for professional association and society in Singapore and internationally

Project Management Institute Singapore Chapter (UEN: S99SS0011L)
- Elected Assistant Secretary, Executive Committee, Jul/2025–Present
  - 96% approval rating by voting members as of 30-May-2026 and 30-Jun-2026
- Elected Member, Executive Committee, Apr/2025–Jun/2026
  - Director, Professional Development, Apr/2025–Jun/2026
  - Co-Director, Mentoring, Apr/2025–Jun/2026
  - Chair, Professional Development Core Committee, Apr/2025–Jun/2026

ACADEMIC & RESEARCH APPOINTMENTS

Photonics (ISSN: 2304-6732)
- Guest Editor, Special Issue, Nov/2024–Present
- Guest Editor, Special Issue, Feb/2023–Jul/2024
- Guest Editor, Special Issue, Nov/2021–Jul/2022
- Topic Editor, Topical Advisory Panel, Jan/2021–Present
Sensors (ISSN: 1424-8220)
- Member, Topical Advisory Panel, Jul/2023–Present
Frontiers in Sensors (ISSN: 2673-5067)
- Member, Editorial Board, Oct/2023–Jan/2024
Prevention and Treatment of Natural Disasters (ISSN: 2753-7544)
- Member, Editorial Board, May/2024–May/2025
- Collection Editor, Topical Collection, Feb/2024–Feb/2025
Enterprise Singapore (UEN: T18GB0001K)
- Member, Grant Evaluation Panel, Jan/2024–Jan/2025
IEEE TryEngineering STEM Grant Program
- Member, Grant Reviewer, 2026

*Selected

RESEARCH

CALL FOR PAPERS

SPECIAL ISSUE: OPTICAL FIBRE SENSING: RECENT ADVANCES AND FUTURE PERSPECTIVES, 2ND EDITION

Special issue serves as a mean to bring together researchers from different fields to collaborate on a specific issue

The Photonics (ISSN 2304-6732) Lasers, Light Sources and Sensors section has a Special Issue on "Optical Fiber Sensing: Recent Advances and Future Perspectives, 2nd Edition". This second edition of the Special Issue aims to showcase recent, original, high-impact research in the field of optical fiber sensing, highlighting its diverse applications and contributions to both science and industry. We invite both experimental and theoretical submissions of original articles, review articles, and technical notes that focus on recent state-of-the-art advances and future directions in the field of optical fiber sensing. Deadline for manuscript submissions: closed (30 July 2025)

Topics of interest include, but are not limited to, the following:

Novel sensing devices, components, and/or applications with optical fiber;
Innovative optical fiber geometry structures, materials, and splicing techniques (such as specialty optical fiber, hollow core fiber, multicore fiber, and photonics crystal fiber);
Intrinsic/extrinsic modifications to optical fiber (such as fiber Bragg gratings, long period gratings, interferometry, fiber lasers, femtosecond laser inscription, focused ion beam, chemical vapor deposition, metamaterials, and multimaterial);
Advanced spectroscopy, imaging, interrogator techniques with optical fiber; Extract insights from optical fiber data with advanced data analysis (such as time series analysis and machine learning);
Optical fiber integration into optoelectronics or multifunctional devices/systems (such as to increase performance and endurance).

Dr. Jun Long Lim
Guest Editor, Photonics
🔗 Click here to learn more

PUBLISHED PAPERS IN THE SPECIAL ISSUE

1. Yongqiang Wen, Guangtian Ma, Peng Xiang and Li Xia, "Optical Path Testing for Fiber Optic Current Transformers Using Optical Frequency Domain Reflectometry," Photonics, Vol. 12, No. 12, pp 1159, Nov 2025. DOI: 10.3390/photonics12121159

Abstract

The long-term operational stability of a fiber optic current transformer (FOCT) is critically dependent on the integrity of its internal fiber optic loop. Conventional testing methods often fall short in providing high-precision, spatially resolved diagnosis of FOCT internal fiber links. To overcome this limitation, this paper proposes a distributed sensing and testing scheme based on Optical Frequency Domain Reflectometry (OFDR). The implemented OFDR system offers a measurement range of up to several hundred meters, with a spatial resolution of 10 μm and a localization accuracy of 1 mm. Capitalizing on these capabilities, the proposed approach enables a comprehensive inspection of the FOCT sensing coil and lead fibers. At the same time, the OFDR response of various devices in the FOCT system is analyzed, while providing precise measurements of both optical loss and reflectance. In addition, the temperature stress variation of the sensing coil is measured by using the sensing characteristics of OFDR. This work provides a powerful and indispensable tool for FOCT factory testing, field fault diagnosis, and condition monitoring, contributing significantly to the safety and stability of smart grid systems.

(CLOSED) CALL FOR PAPERS

SPECIAL ISSUE: OPTICAL FIBRE SENSING: RECENT ADVANCES AND FUTURE PERSPECTIVES

Special issue serves as a mean to bring together researchers from different fields to collaborate on a specific issue

The Photonics (ISSN 2304-6732) Lasers, Light Sources and Sensors section has a Special Issue on "Optical Fibre Sensing: Recent Advances and Future Perspectives". We had invited both theoretical and experimental submissions of original articles, review articles, and technical notes that focus on recent state-of-the-art advances and future directions in the field of optical fibre sensing. Deadline for manuscript submissions: closed (30 July 2024)

Topics of interest include, but are not limited to:

Fibre integrated optoelectronics generation/detection such as photovoltaics and photodetectors;
Frequency shift optical fibre interferometry;
Hyperspectral optical fibre imaging;
Multifunctional optical fibre spectroscopy;
Nanostructure, superstructure, multimaterial modified optical fibre sensing;
Novel components and applications in fibre Bragg gratings, fibre lasers, interrogator devices, femtosecond laser inscription, focused ion beam devices, healthcare and biomedical devices, etc.

Dr. Jun Long Lim
Guest Editor, Photonics
🔗 Click here to learn more

PUBLISHED PAPERS IN THE SPECIAL ISSUE

1. Yunfei Chen, Shuhan Zhu, Kaimin Yu, Minfeng Wu, Lei Feng, Peibin Zhu, and Wen Chen, "Quantitative Analysis of φ-OTDR Spatial Resolution Influenced by NLM Parameters," Photonics, Vol. 10, No. 2, pp 529, May 2023. DOI: 10.3390/photonics10050529

Abstract

Non-local mean (NLM) can significantly improve the signal-to-noise ratio (SNR), but it inevitably reduces the spatial resolution of distributed optical fiber sensors (DFOS), which hinders its practical application and the improvement of DFOS performance. In this paper, the quantitative relationship between the signal broadening of a phase-sensitive optical time-domain reflectometer (𝜑 -OTDR) and the NLM parameters is analyzed to identify the cause and extent of the spatial resolution degradation. The denoising results for the mimic periodic and 𝜑 -OTDR vibration signals indicate that the signal broadening is mainly due to the similarity window size of NLM, and the signal amplitude reduction is caused by the Gaussian smoothing parameter. Compared with the reference signals, the signal broadening of the mimic and 𝜑 -OTDR signals after denoising are 2.56% and 2.74%, respectively, which is much less than the previous results. The signal amplitude is reduced by 9.25% and 13.62%, respectively. This work promotes the application of NLM and improves the performance of DFOS.

2. Weixuan Luo, Ying Wang, Qiang Ling, Zuguang Guan, Daru Chen, and Qiong Wu, "An Axial Force Sensor Based on a Long-Period Fiber Grating with Dual-Peak Resonance," Photonics, Vol. 10, No. 5, pp 591, May 2023. DOI: 10.3390/photonics10050591

Abstract

A high-sensitivity axial force sensor with a large measurement range based on a dual-peak long-period fiber grating (LPFG) is proposed and experimentally demonstrated. Previously, the relationship between the grating period and the dual-peak wavelengths has been investigated based on the coupled-mode theory. In our experiment, the LPFG was fabricated in our laboratory by illuminating the fiber core with the aid of a 213 nm UV laser. The sensitivity of the proposed axial force sensor can reach −14.047 nm/N in the force range from 0.490 N to 4.508 N. Taking the advantages of a compact size, low cost, and large measurement range, our force sensor has more applicable abilities in harsh environments.

3. Jérémy Perrot, Adriana Morana, Emmanuel Marin, Youcef Ouerdane, Aziz Boukenter, Johan Bertr, and Sylvain Girard, "Combined Radiation and Temperature Effects on Brillouin-Based Optical Fiber Sensors," Photonics, Vol. 10, No. 12, pp 1349, Dec 2023. DOI: 10.3390/photonics10121349

- Featured Paper in the Special Issue

Abstract

The combined effects of temperature (from −80 °C to +80 °C) and 100 kV X-ray exposure (up to 108 kGy(SiO2)) on the physical properties of Brillouin scattering and losses in three differently doped silica-based optical fibers, with varying dopant type and concentration (4 wt%(Ge), 10 wt%(Ge) and 1 wt%(F)), are experimentally studied in this work. The dependencies of Brillouin Frequency Shifts (BFS), Radiation-Induced Attenuation (RIA) levels, Brillouin gain attenuation, Brillouin frequency temperature (CT) and strain (Cε) sensitivity coefficients are studied under X-rays in a wide temperature range [−80 °C; +80 °C]. Brillouin sensing capabilities are investigated using a Brillouin Optical Time Domain Analyzer (BOTDA), and several properties are reported: (i) similar behavior of the Brillouin gain amplitude decrease with the increase in the RIA; (ii) the F-doped and heavily Ge-doped fibers do not exhibit a temperature dependence under radiation for their responses in Brillouin gain losses. Increasing Ge dopant concentration also reduces the irradiation temperature effect on RIA. In addition, Radiation-Induced Brillouin Frequency Shift (RI-BFS) manifests a slightly different behavior for lower temperatures than RIA, presenting an opportunity for a comprehensive understanding of RI-BFS origins. Related temperature and strain sensors are designed for harsh environments over an extended irradiation temperature range, which is useful for a wide range of applications.

4. Zach Dejneka, Daniel Homa, Joshua Buontempo, Gideon Crawford, Eileen Martin, Logan Theis, Anbo Wang, and Gary Pickrell, "Magnetic Field Sensing via Acoustic Sensing Fiber with Metglas® 2605SC Cladding Wires," Photonics, Vol. 11, No. 4, pp 348, Apr 2024. DOI: 10.3390/photonics11040348

Abstract

Magnetic field sensing has the potential to become necessary as a critical tool for long-term subsurface geophysical monitoring. The success of distributed fiber optic sensing for geophysical characterization provides a template for the development of next generation downhole magnetic sensors. In this study, Sentek Instrument’s picoDAS is coupled with a multi-material single mode optical fiber with Metglas® 2605SC cladding wire inclusions for magnetic field detection. The response of acoustic sensing fibers with one and two Metglas® 2605SC cladding wires was evaluated upon exposure to lateral AC magnetic fields. An improved response was demonstrated for a sensing fiber with in-cladding wire following thermal magnetic annealing (~400 °C) under a constant static transverse magnetic field (~200 μT). A minimal detectable magnetic field of ~500 nT was confirmed for a sensing fiber with two 10 μm cladding wires. The successful demonstration of a magnetic field sensing fiber with Metglas® cladding wires fabricated via traditional draw processes sets the stage for distributed measurements and joint inversion as a compliment to distributed fiber optic acoustic sensors.

5. Siwon Song, Jae Hyung Park, Jinhong Kim, Seunghyeon Kim, Seokhyeon Jegal, Sangjun Lee, and Bongsoo Lee, "Acquiring Gamma-Ray Energy Spectrum Using a Plastic Scintillation Optical Fiber Detector," Photonics, Vol. 11, No. 6, pp 493, May 2024. DOI: 10.3390/photonics11060493

Abstract

The plastic scintillation optical fiber (PSOF) detector, characterized by its large contact area with measurement targets, effectively detects and quantifies radiation in diverse radiation-contaminated areas and liquid environments. While it is extensively utilized for measuring alpha, beta, gamma, and neutron radiations, comprehensive documentation on the spectrum measurement and energy calibration methods for gamma nuclides has not been reported. Accurate energy calibration is crucial for the precise quantification of radiation doses from various sources. The pulse-height spectrum produced by the PSOF detector does not display a Compton maximum because of the significant Gaussian energy broadening. Additionally, this spectrum compresses as the distance increases between the radiation source and the light measurement device. In this study, the energy spectrum of a PSOF for gamma nuclides was characterized by energy calibrations using Compton edge (CE). The CE channel in the measurement spectrum of the PSOF detector for three gamma nuclides was identified using the first-order differentiation method. This technique was successfully applied to spectra measured at various radiation source positions to determine the attenuation coefficients. The proposed energy calibration method allows for the conversion of pulse-height spectra obtained from alpha, beta, and neutron radiation measured with PSOF detectors into energy spectra.

6. François Ouellette, "Dual-Wavelength Differential Detection of Fiber Bragg Grating Sensors: Towards a Sensor Ecosystem," Photonics, Vol. 11, No. 6, pp 509, May 2024. DOI: 10.3390/photonics11060509

Abstract

We discuss how the dual-wavelength differential detection (DWDD) of fiber Bragg grating sensors can be used to build standardized high-resolution, high-accuracy, large-measurement-range, multichannel instruments and associated sensors. We analyze the system resolution and experimentally show that the high signal-to-noise ratio can allow the design of sensors with a ratio of range to resolution superior to 14 bits, and temperature measurement ranges of more than 180 °C. We propose a scheme for real-time signal correction to cancel the drift of the instrument using two internal reference sensors, and a calibration method using centralized golden sensors that allows traceability to international standards for all instruments and sensors, allowing the creation of a global sensor/instrument ecosystem.

7. Er’el Granot, " Affordable Highly Sensitive Fiber Optical Sensor Based on Coupled Fibers with Harmonically Varying Refractive Index," Photonics, Vol. 11, No. 8, pp 725, Aug 2024. DOI: 10.3390/photonics11080725

Abstract

Optical fiber sensors consist of multiple Mach–Zehnder (MZ) interferometers and are common in the protection of different compounds. These sensors are very sensitive to any intrusion or threat. However, the spatial resolution is proportional to the number of MZ interferometers along the sensor. Consequently, a long sensor with a high resolution can be costly. In this paper, we suggest replacing the cascaded MZ interferometers with a couple of adjacent fibers, each of which have a harmonically varying refractive index. In this theoretical study, it is shown that two fibers with varying refractive indices demonstrate a sensitivity equivalent to that of multiple MZ interferometers. Furthermore, when the coupling coefficient between the fibers is weak, an analytical expression can be derived for the transmission between the fibers. This transmission reveals a quantization rule for which the light coupling between the two fibers vanishes.

8. Abdulrahman K. Alzamil,Mahmoud A. Sharawy,Esam M. Almohimmah, Amr M. Ragheb, Ahmed Almaiman, and Saleh A. Alshebeili, "Development of an Integrated Communication and Sensing System Using Spread Spectrum and Photonics Technologies," Photonics, Vol. 11, No. 9, pp 861, Sep 2024. DOI: 10.3390/photonics11090861

Abstract

In the ever-evolving landscape of modern technology, integrating communication and sensing systems has become increasingly essential for a wide range of applications, from military and defense to autonomous vehicles and beyond. The integration offers a convergence of capabilities that enhances operational efficiency and provides adaptability in complex environments. In this paper, we develop, in simulation and experiment, an integrated communication and sensing system, exploring the cutting-edge utilization of spread spectrum and radio-over-fiber (RoF) photonic technologies. RoF technology inherits the benefits of optical fibers, which include low attenuation and longer reach distance compared to other media. First, we consider the integration of communication and sensing functions using a spread spectrum–binary phase-shift keying waveform. In this integrated system, the sensing function is performed using a radar system. The performance of the proposed system is evaluated in terms of the peak-to-sidelobe ratio of the radar correlator output and the bit error rate for the communication system. The results are obtained through extensive MATLAB simulations. Next, we consider the realization of the proposed integrated communication and sensing system using photonics technology. This phase commences with the utilization of specialized photonics-based software for extensive simulations at different fiber lengths, which is an essential foundational step toward the practical implementation of the proposed system using photonics. Lab experiments are also presented to validate the simulation results.

9. Verdi Vanreusel, Hugo Vallet, Jordi Wijnen, Benjamin Côté, Paul Leblans, Paul Sterckx, Dirk Vandenbroucke, Dirk Verellen, and Luana de Freitas Nascimento, "Development of an Integrated Communication and Sensing System Using Spread Spectrum and Photonics Technologies," Photonics, Vol. 11, No. 9, pp 865, Sep 2024. DOI: 10.3390/photonics11090865

Abstract

Dosimetry is crucial in radiotherapy to warrant safe and correct treatment. In FLASH radiotherapy, where ultra-high dose rates (UHDRs) are used, the dosimetric demands are more stringent, requiring the development and investigation of new dosemeters. In this study, three prototype fiber-optic dosemeters (FODs)—an inorganic, an organic–inorganic hybrid metal halide, and an organic (plastic) scintillator are optimized and investigated for UHDR electron irradiations. The plastic FOD is developed by Medscint, whereas the others are in-house made. The stem signal is minimized by spectral decomposition for the plastic scintillator, and by band-pass wavelength filters for the inorganic and organic–inorganic hybrid metal halide FOD. All prototypes are tested for the dose rate defining parameters. The optimal band-pass wavelength filters are found to be centered around 500 nm and 425 nm for the inorganic and organic–inorganic hybrid metal halide FODs, respectively. A sampling frequency of 1000 Hz is chosen for the inorganic and organic–inorganic hybrid metal halide FODs. The plastic FOD shows to be the least dose rate dependent with maximum deviations of 3% from the reference for the relevant beam settings. The inorganic and organic–inorganic hybrid metal halide FODs, in contrast, show large deviations of >10% from the reference and require more investigation. The current FOD prototypes are insufficient for application in UHDR electron beams, and require further development and investigation.

TOPICAL COLLECTION: SENSOR TECHNOLOGIES AND IOT SYSTEMS FOR NATURAL DISASTER MANAGEMENT AND RESILIENCE

Topical Collection serves as a mean to bring together researchers from different fields to collaborate on a specific subject

The Prevention and Treatment of Natural Disasters (PTND) is calling for a Topical Collection on "Sensor Technologies and IoT Systems for Natural Disaster Management and Resilience". We invite both theoretical and experimental submissions of original articles, review articles, and technical notes that focus on recent state-of-the-art advances and future directions in the field of sensor technologies for effective natural disaster management and resilience enhancement.

Topics of interest include, but are not limited to:

Sensor technologies;
Internet of Things (IoT);
Early warning systems;
Real-time monitoring;
Disaster management system;
Disaster risk assessment;
Edge technologies;
Cloud technologies

Dr. Jun Long Lim
Collection Editor, PTND
🔗 Click here to learn more

THEMATIC COLLECTIONS

In my capacity as the Guest Editor or the Collection Editor in scientific journals, I curate thematic collections for special issues or topical collections. Leveraging my expertise in optical fiber sensor and Internet of Things (IoT), I collaborate with esteemed journals to bring together insightful and high quality articles and research contributions that explore key themes and emerging trends in the field. These curated collections serve as vibrant hubs for interdisciplinary discourse, spotlighting groundbreaking research, and offering fresh perspectives to the academic community.

2026-2030

2021-2025

Optical Fiber Sensing: Recent Advances and Future Perspectives, 2nd Edition, in Photonics, 2024–Current
Sensor Technologies and IoT Systems for Natural Disaster Management and Resilience, in Prevention and Treatment of Natural Disasters, 2024–2025
Optical Fibre Sensing: Recent Advances and Future Perspectives, in Photonics, 2022–2024
Optical Fibers and Sensing, in Photonics, 2021–2022

2016-2020

RESEARCH INTERESTS

Optical fiber sensor; Specialty optical fiber; Fiber Bragg gratings; Quasi-distributed sensing, Finite element method; Spectroscopy; Photonics waveguide design; Harsh environment; Advanced manufacturing; Aerospace; Ageing population; Healthcare.

QUASI-DISTRIBUTED SENSING SYSTEM

For example, advanced manufacturing and offshore applications

FBG sensor for exploratory, proof of concept, and real world applications in harsh environments
Specialty optical fibre as a platform for industrial, functionalization or biosensing applications
IoT sensors and system

MIDDLEWARE FOR EMERGING SOLUTIONS

Data management in hybrid cloud/on-premise, and multi-cloud environments
Data solutions and integration for Artificial Intelligence (A.I.) applications
Tech deck and data security for real world applications

🚀 Trendy topics

Artificial intelligence, automation,
5G, 6G,
Smart city, sustainability, green buildings

🌌 Domains

Air: aerospace
Land: process plant, power plant, security
Sea: offshore, floating platforms, jack-up

PATENTS

(Issued 2026). Method and System for Real-time Monitoring of Wall Thinning and Ascertaining of Wall Attributes using fiber Bragg grating (FBG) sensors (U.S. Patent No. 12553704B2). U.S. Patent and Trademark Office. [Google Patents]

Click here to go to "Lim Jun Long & Science"

📑 Academic CV

PUBLICATIONS & IMPACT STATISTICS

JUN LONG'S PH.D THESIS

THESIS TITLE

"Design and analysis of solid-core microstructured optical fiber sensors for sensing surrounding refractive index and surrounding temperature"
Downloadable via NTU: DOI: 10.32657/10220/46223 | via mirror links: https://news.limjunlong.science

PHD SUPERVISOR

Full Professor Perry Ping SHUM | LinkedIn | ResearchGate | Google Scholar
- Professor Shum is currently a Chair Professor of the Department of Electronics and Electrical Engineering, Chief Scientist of the State Key Laboratory of Optical Fiber and Cable Manufacture Technology, Director of Guangdong Key Laboratory of Integrated Optoelectronics Intellisense, with the Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, China. He was previously with the Nanyang Technological University (NTU), Singapore during Dr. Lim's PhD candidature period. He served as director of the Network Technology Research Centre (NTRC), Photonics Centre of Excellence (OPTIMUS), and Centre for Optical Fibre Technology (COFT), and Deputy Dean in charge of academic programs at Nanyang Technological University, Singapore.
- He is a National Distinguished Expert, 𝐂𝐎𝐒 Fellow, 𝐈𝐄𝐄𝐄 Fellow, 𝐒𝐏𝐈𝐄 Fellow, 𝐎𝐏𝐓𝐈𝐂𝐀 Fellow, and President of the IEEE Photonics Society (2024-2025). Professor Shum has published 400 journal papers with about 20 thousand citations and an H-index of 70 in fiber-based technology, laser, silicon photonics, medical imaging and endoscopy, intelligent medical diagnosis techniques, and computational imaging.

📑 Academic CV

Dr Lim's PhD Research Impact

By 3rd Year of Post-doc (2018-2021)

Published in top 10 % of research field with 27.6 % of all publications above the 80th percentile
Over 500 total citations
1 paper cited over 100 times, another 3 papers cited over 50 times

Key Citation Indices

Quick Research Metric Profile Links

Google Scholar (http://scholar.google.com.sg/citations?user=nJPT6gwAAAAJ&hl=en)
ORCID [iD 0000-0003-0994-0691] [printable] (https://orcid.org/0000-0003-0994-0691)
Scopus by Elsevier [Author ID 54787967100] (https://www.scopus.com/authid/detail.uri?authorId=54787967100)
Web of Science / Publons (https://www.webofscience.com/wos/author/rid/D-5658-2011)

Publication Metrics

h-index shouldn't be the only factor deciding whether a researcher is doing well in the scientific community or how he ranked among other researchers whether in same or different domain. Want to know about h-index? Click here

Average citations per published international papers = 18.2
Total published international papers = 29
- Number of journal paper = 14 (48% of total Int. paper)
Total number of postdoc years = 3 (since 2018)
Average citation per postdoc year = 176
Average citations per published international papers = 18.2
Average citation per year = 52.8
Highest cited paper citation count = 105

Note: Above metrics are calculated via Google Scholar.

Google Scholar

Total citations (all time) = 548
Total citations (since 2016, or 5 years) = 327
h-index (all time) = 9
h-index (last 5 years) = 9
i10-index = 9
All time highest citation in any year = 73 in year 2014
All time lowest citation in any year = 32 in year 2012

SCImago Journal Ranking (SRJ)

Total number of publications in top 10% of subject category = 4 of 28 (14.3% overall)

Published in top scientific journals (selected list):

Optics Letters (Top 10%)
- Rank = 19, SJR = 1.788, h-index = 257
Optics Express (Top 10%)
- Rank = 22, SRJ = 1.533, h-index = 256
IEEE Photonics Technology Letters (Top 20%)
- Rank = 37, SRJ = 0.945, h-index = 150
IEEE Photonics Journal (Top 20%)
- Rank = 43, SRJ = 0.855, h-index = 66

Note:

Data are extracted from the :
- Subject area: Physics and Astronomy
- Subject categories: Atomic and Molecular Physics, and Optics
There are total of 231 ranked publications for journal and conferences in this subject categories in 2019
Top 10% and Top 20% refer to the 90th percentile and 80th percentile ranked in the subject category respectively.

WEB OF SCIENCE, CLARIVATE

Publons Metrics

Publications in Web of Science: 28
Sum of Times Cited = 396
h-index = 9
Average citations per item = 16.5
Average citations per year = 39.6
Verified reviews: 11 (78th percentile)
Review to publication ratio = 0.4:1

IEEE

Publications in IEEE Xplore = 16
Citations in IEEE Xplore = 197

Note:

Statistics for IEEE Xplore may be under counted due to incorrect/ under tagging of publications.

SCOPUS

Publication count in Scopus = 27
Citations as in Scopus = 504 by 403 documents
h-index as in Scopus = 10

*Scopus research metric last update on 25th March 2022.

Statistics with 2020 Scopus Metrics

Total number of publications in top 10% = 4 of 27 (14.8 % overall throughout research career)

Total number of publications in 1st quartile = 13 of 27 (48.1 % overall throughout research career)

CiteScore Top 10% publications in highly influential journals:

Sensors and Actuators B: Chemical, CiteScore 14.0 (CiteScore top 10% and 1st quartile in 2020) — 1X article
IEEE Transactions on Automation Science and Engineering, CiteScore = 10.6 (CiteScore top 10% and 1st quartile in 2020) — 1X article

IEEE Journal of Selected Topics in Quantum Electronics, CiteScore = 9.2 (CiteScore top 10% and 1st quartile in 2020) — 1X article
IEEE Sensors Journal, CiteScore 6.0 (CiteScore top 10% and 1st quartile in 2020) — 1X article

*These sources are also in CiteScore 1st quartile.

Other Publications in reputable Journals in the CiteScore 1st quartile 2020:

Optics Express, CiteScore 7.2 — 2X articles
Optics Letters, CiteScore 7.0 — 2X articles
IEEE Photonics Technology Letters, CiteScore 5.5 — 1X article
IEEE Photonics Journal, CiteScore 5.4 — 3X articles
Procedia Engineering, CiteScore 4.0 — 1X article

Note:

Data are extracted from :
- Subject categories: Atomic and Molecular Physics, and Optics
Top 10% are refined list from the Scopus' Citescore highest quartile.
Information on Scopus is not managed or administered by the author.
CiteScore calculates the average number of citations received in 4 calendar years to 5 peer-reviewed document types (research articles, review articles, conference proceedings, data papers, and book chapters) published in a journal in the same four years. [more info]

OLD INFORMATION FOR REFERENCE

A Short Note

Metrics statistic last updated on 25th March 2022. The metrics presented are purely for reference only and are not absolute indicators of capabilities.

Statistics with 2015 Scopus Metrics

Total number of publications in top 10% = 4 of 24 (16.67 % overall)

Total number of publications in 1st quartile = 8 of 24 (33.33 % overall)

Published in these selected highly influential journals (top 10% or 1st quartile):

1. Optics Letters (CiteScore top 10% in 2015) - 2X articles
  - Rank = 10 / 159, CiteScore = 7.0, 94th percentile
  - Rank 3 in Citation 2012-2015
  - Rank 3 in Documents 2012-2015
  - Rank 7 in % Cited
2. Optics Express (CiteScore top 10% in 2015) - 1X article
  - Rank = 9 / 159, CiteScore = 7.1, 94th percentile
  - Rank 1 in Citation 2012-2015
  - Rank 1 in Documents 2012-2015
3. IEEE Journal of Selected Topic in Quantum Electronics (CiteScore top 10% in 2015) - 1X article
  - Rank = 13 / 159, CiteScore = 6.1, 92nd percentile
4. IEEE Photonics Technology Letters (CiteScore 1st quartile in 2015) - 1X article
  - Rank = 21 / 159, CiteScore = 5.2, 87th percentile
  - Rank 10 in Citation 2012-2015
5. IEEE Photonics Journal (CiteScore 1st quartile in 2019) - 3X articles
  - Rank = 33 / 159, CiteScore = 4.2, 79th percentile

Statistics with 2019 Scopus Metrics

Total number of publications in 1st quartile = 8 of 28 (28.57 % overall)

Published in these selected highly influential journals (1st quartile):

IEEE Journal of Selected Topic in Quantum Electronics (CiteScore 1st quartile in 2019) - 1X
1. Rank = 21 / 183, CiteScore = 7.4, 88th percentile
Optics Letters (CiteSscore 1st quartile in 2019) - 2X
1. Rank = 22 / 183, CiteScore = 7.2, 88th percentile
2. Rank 5 in Citation 2016-2019
3. Rank 9 in Documents 2016-2019
Optics Express (CiteScore 1st quartile in 2019) - 2X
1. Rank = 26 / 183, CiteScore = 6.7, 86th percentile
2. Rank 1 in Citation 2016-2019
3. Rank 2 in Documents 2016-2019
IEEE Photonics Technology Letters (CiteScore 1st quartile in 2019) - 1X
1. Rank = 38 / 183, CiteScore = 5.5, 79th percentile
IEEE Photonics Journal (CiteScore 1st quartile in 2019) - 3X
1. Rank = 45 / 183, CiteScore = 5.0, 78th percentile

References

1. CiteScore™ Percentile 2020, CiteScore™ Rank 2020, CiteScore™ Quartile 2020. Calculated by Scopus on 05 May 2021.
2. CiteScore™ Percentile 2019, CiteScore™ Rank 2019, CiteScore™ Quartile 2019. Calculated by Scopus on 31 May 2020.

CiteScore data are extract from running years:

CiteScore™ Percentile 20XX. Calculated by Scopus on 31 May 20XX for Atomic and Molecular Physics, and Optics. Available from www.scopus.com/sourceid
CiteScore™ Rank 20XX. Calculated by Scopus on 31 May 20XX for Atomic and Molecular Physics, and Optics. Available from www.scopus.com/sourceid
CiteScore™ Quartile 20XX. Calculated by Scopus on 31 May 20XX for Atomic and Molecular Physics, and Optics. Available from www.scopus.com/sourceid

MORE ABOUT DR LIM

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ACM Certified Reviewer · Association for Computing Machinery · Issued 2025 · No expiry
Certified Peer Reviewer · Elsevier · Issued 2024 · No expiry
Gemini Certified Educator · Google · Issued 2026 · Valid until 2029

Recent Conferences Attended

*Selected on Academic and Technical Innovation

2026 · 6th IEEE International Conference on Human-Machine Systems (ICHMS) · Singapore · Volunteer
2026 · PMI® PMXPO 2026 · Online · Attendee
2025 · AWS Summit Singapore · Singapore · Attendee
2025 · 6th International Electronic Conference on Applied Sciences (ASEC) · Online · Attendee
2025 · 12th International Electronic Conference on Sensors and Applications (ECSA) · Online · Attendee
2025 · AWS Builders Online Series · Online · Attendee
2025 · AWSome Day Online Conference · Online · Attendee

*For active contributor roles, please click here to read under Leadership & Recognition with Purpose

Professional Profile

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IEEE Xplore (https://ieeexplore.ieee.org/author/37594782900)
PMI (https://community.pmi.org/profile/junlonglim)
SPIE (https://spie.org/profile/limjunlong)

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