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Ritu Raj Singh

Ritu Raj Singh
Assistant Professor
Qualification
Ph.D.
Phone
+91-6287821839
Email
rituraj.singh@nsut.ac.in

 

 

 

 

Bio-sketch

Ritu Raj Singh is currently a faculty in the Department of Electronics and Communication Engineering, Netaji Subhas University of Technology, Delhi. He joined NSUT Delhi as Assistant Professor in June 2021. Before joining NSUT Delhi, he was faculty in Department of ECE, Indian Institute of Information Technology Ranchi. He received Ph.D and M. Tech. degree from Indian Institute of Technology (Indian School of Mines) Dhanbad, Jharkhand, India in 2019 and 2015, respectively. He received B.Tech. degree from Jaypee Institute of Information Technology, Noida, India in 2013. 

He is interested in the field of Optical Networks and Silicon Photonics, and his research work focuses on developing and optimizing optical networks and silicon photonics-based devices. He has developed several new models and simulation tools to analyze and optimize the performance of these devices. His research interests are Grating devices, Nanophotonics, Nonlinear Optics, Optical Sensors/Biosensors, Optical Communications, Quantum Communication, Optoelectronics, optical waveguide, silicon nanowire and its applications. He has been elected as the Chair of the Optica Integrated Photonics Technical Group for the term 2025 to 2027. He also serves as the faculty advisor for the Optica Student Chapter at NSUT Delhi. In 2024, he was selected as an Optica Ambassador. He is an active member of several professional organizations, including the Optical Society of India (OSI), IEEE (Institute of Electrical and Electronics Engineers), SPIE (Society of Photo-Optical Instrumentation Engineers), IETE (Institution of Electronics and Telecommunication Engineers), and Optica (formerly known as OSA – The Optical Society).

Areas of Interest

Silicon Photonics: Optical waveguides with applications, Nonlinear optics, Optoelectronics device, Optical interconnects, Biomedical sensors, Silicon wire and its applications, crystals and gratings.

Optical Networks: Fiber-optic networks, Quantum Communication, Free-space optical networks, FBG Based sensors, photonic crystal fiber, Fiber-waveguide coupler.

 

 

Publications in International Journal

  1. Shalini Vardhan, Devansh Srivastava, Naveen Kumar Gupta, Ritu Raj Singh and Santosh Kumar, “Spectral Envelope Analysis of Subwavelength Grating Waveguide Micro Racetrack Ring Resonator for Cancer Sensing Using Integrated Photonics”, Photonics, Vol: 12(4), Page(s): 376 (2025). https://doi.org/10.3390/photonics12040376 Print ISSN: 2304-6732 
  2. Shalini Vardhan and Ritu Raj Singh, “Analytical Investigation of DNA Hybridization Sensing Using Integrated Photonic Micro-Ring Resonators”, Photonics, Vol: 12(3), Page(s): 216 (2025). https://doi.org/ 10.3390/photonics12030216 Print ISSN: 2304-6732 
  3. Shalini Vardhan and Ritu Raj Singh, “Modeling and optimization of photonic integrated Silicon-LiNbO3 hybrid interferometer for E-S-C-L wavelength band”, Eng. Res. Express, Vol: 6, Page(s): 045360 (2024). 10.1088/2631-8695/ad9b04 Print ISSN: 2631-8695 
  4. Shalini Vardhan, Ritu Raj Singh, “Optimization and Comparative Analysis of Rectangular and Slot Waveguide based Symmetric Ring and Racetrack Resonators for SoI Photonic Integrated Filters”, Silicon, Page(s): 1–14 (2024) DOI: 10.1007/s12633-024-02879-z Print ISSN: 1876-990X 
  5. Devansh Srivastava, Shalini Vardhan, Ritu Raj Singh, “SoI Based Optical 1 × 2 Wavelength Independent 3-dB Power Splitter Design Using Three Rectangular Cross-Sectional Cuboidal Waveguides”, Silicon, Volume: 15, Page(s): 1381–1391 (2023) DOI: 10.1007/s12633-022-02105-8 Print ISSN: 1876-990X
  6. Soumya Kumari, Ritu Raj Singh, Saurabh Mani Tripathi, “Parametric Optimization of Hybrid Plasmonic Waveguide-Based SOI Ring Resonator Refractive Index Sensor”, Plasmonics, Volume: 17, Page(s): 2417-2430 (2022) DOI: 10.1007/s11468-022-01724-6 Print ISSN: 1557-1955 
  7. Devansh Srivastava, Wridheeman Bhattacharya, Shalini Vardhan, Nishit Malviya, Ritu Raj Singh, “Parametric optimization of hollow core photonic crystal fiber and its comparison with conventional single mode fiber”, Results in Optics, Volume: 9, Page(s): 100294 (2022) DOI: 10.1016/j.rio.2022.100294 Online ISSN: 2666-9501 
  8. Ritu Raj Singh, Vishnu Priye, “Analytical Prediction for Quasi-TE mode in Silicon Nanowire Optical Rectangular Waveguide”, Journal of Computational Electronics, Volume: 21, Page(s): 942 – 952 (2022) DOI: 10.1007/s10825-022-01887-9 Print ISSN: 1569-8025 
  9. Ritu Raj Singh, “Structural optimization and parametric analysis of SOI optical slot waveguides”, Journal of Computational Electronics, Volume: 19, Page(s): 825 – 839  (2020) DOI: 10.1007/s10825-020-01473-x Print ISSN: 1569-8025 
  10. Ritu Raj Singh, “Dispersion tailoring of silicon nanowire optical rectangular waveguide (SNORW)”, SN Applied Sciences, Volume: 2, Issue: 3, Page(s): 502 – 509  (2020) DOI: 10.1007/s42452-020-2309-z Electronic ISSN: 2523-3971 
  11. Rukmani Singh, Ritu Raj Singh, Vishnu Priye, “Parametric Optimization of Fiber to Waveguide Coupler using Bragg Gratings”, Optical and Quantum Electronics, Volume: 51, Page(s): 256 – 266  (2019) DOI: 10.1007/s11082-019-1974-x Print ISSN: 0306-8919 
  12. Ritu Raj Singh, Saumya Kumari, Abhinav Gautam, Vishnu Priye, "Glucose Sensing Using Slot Waveguide Based SOI Ring Resonator", IEEE Journal of Selected Topics in Quantum Electronics, Volume: 25 (2018). DOI: 10.1109/JSTQE.2018.2879022 Electronic ISSN: 1077-260X 
  13. Ritu Raj Singh, Vishnu Priye, "Silicon Nanowire Optical Rectangular Waveguide Biosensor for DNA Hybridization", IEEE Photonics Technology Letters, Volume: 30, Page(s): 1123 – 1126 (2018).  DOI: 10.1109/LPT.2018.2835152 Print ISSN: 1041-1135  Electronic ISSN: 1941-0174 
  14. Ritu Raj Singh, Vishnu Priye, "Numerical analysis of film-loaded silicon nanowire optical rectangular waveguide: an effective optical sensing", IET Micro & Nano Letters, Volume: 13, Page(s): 1291 – 1295 (2018). DOI: 10.1049/mnl.2018.0140 Print ISSN: 1750-0443
  15. Ritu Raj Singh, NishitMalviya, Vishnu Priye, “Parametric Analysis of Silicon Nanowire Optical Rectangular Waveguide Sensor”, IEEE Photonics Technology Letters, Volume: 28, Page(s): 2889 – 2892 (2016). DOI: 10.1109/LPT.2016.2624501  Print ISSN: 1041-1135  Electronic ISSN: 1941-0174 
  16. Abhinav Gautam, Amitesh Kumar, Ritu Raj Singh, Vishnu Priye, “Optical sensing and monitoring architecture for pipelines using optical heterodyning and FBG filter”, Optik - International Journal for Light and Electron Optics, Volume: 127, Page(s): 9161 – 9166 (2016). DOI: 10.1016/j.ijleo.2016.06.133 ISSN: 0030-4026
  17. Amitesh Kumar, Vishnu Priye, Ritu Raj Singh, “All optical measurement of an unknown wideband microwave frequency”, Opto-Electronics Review, Volume: 24, Page(s): 191 – 195 (2016). DOI: 10.1515/oere-2016-0021 Online ISSN: 1896-3757 

 

Publications in International Conference

  1. Aakarsh Garg, Abhijeet Singh, Sanskar Bansal, Saumay Dudeja, Ritu Raj Singh, "Spectral Behavior Optimization of Uniform Fiber Bragg Grating-Inscribed in SMF-28 Fiber," 2023 7th International Conference on Electronics, Materials Engineering & Nano-Technology (IEMENTech), Kolkata, India, 2023, pp. 1-4, doi: 10.1109/IEMENTech60402.2023.10423479. 
  2. Shalini Vardhan, Ritu Raj Singh, “Wavelength Independent Coupling Length Variation analysis using Silicon on Insulator based Rectangular Waveguide for Coupler/Splitter Application”, 04-022, JSAP-Optica Joint Symposia (2023)
  3. Sanjeev Kumar Yadav, Shweta Kumari, Maneesha Gupta, Ritu Raj Singh “DTMOS Based Squarer Circuit and Its Application in Controllable Gaussian Function Generator”, Recent Developments in Electrical and Electronics Engineering. Lecture Notes in Electrical Engineering, vol 979 (2023). Springer, Singapore. https://doi.org/10.1007/978-981-19-7993-4_38
  4. Shalini Vardhan and Ritu Raj Singh, "Design, simulation and performance comparison of SoI rectangular waveguide and SMF for methane detection", SPIE Proceedings Vol. 12148, SPIE  Photonics Europe 2022, Strasbourg, France, Apr 2022. DOI: 10.1117/12.2621459 
  5. Ritu Raj Singh, Devansh Srivastava, Wridheeman Bhattacharya, Nishit Malviya and Anamika Singh, " Performance analysis for mode confinement loss of photonic crystal fiber with circular air hole rings around the solid core", SPIE Proceedings Vol. 12140, SPIE  Photonics Europe 2022, Strasbourg, France, Apr 2022. DOI: 10.1117/12.2622204 
  6. Ritu Raj Singh, Devansh Srivastava, and Wridheeman Bhattacharya, "Analysis of Solid-core Photonic Crystal Fiber for Confinement Loss and Birefringence with Square Air Hole Layers", Frontiers in Optics + Laser Science 2021, 1–4 November 2021. DOI: 10.1364/FIO.2021.JTh5A.64
  7. Abhishek Jha, Abhishek Kumar and Ritu Raj Singh, "Comparative analysis of SOI bulk rectangular and nanowire optical waveguide for label-free lung cancer detection", SPIE  Optics + Photonics 2021 DOI: 10.1117/12.2597815
  8. Ritu Raj Singh, and Soumya Kumari “Comparative Analysis of Gold Disc and Strip based Hybrid Plasmonic SOI Ring Resonator Waveguide”. WRAP-2019, 13 - 14Dec 2019, IIT, Guwahati, India.
  9. Ritu Raj Singh, Soumya Kumari, Vishnu Priye, “Computational Field Analysis of Bulk-Slotted Gold based Hybrid Plasmonic SOI Ring Resonator” paper 20a_E215_5, 80th JSAP, 18 – 21 Sept 2019, Hokkaido University, Sapporo, Japan.
  10. Ritu Raj Singh, Abhinav Gautam, Vishnu Priye, “Parametric Analysis of Silicon Nanowire Based Ring Resonator”. SPIE Photonics West, 2 - 7 February 2019, San Francisco, California, United States. DOI: 10.1117/12.2507917
  11. Ritu Raj Singh, Anamika Singh, Abhinav Gautam, Vishnu Priye, “Vertical Silicon Nanowire based Optical Waveguide for DNA Hybridization Biosensor”. SPIE Photonics West, 2 - 7 February 2019, San Francisco, California, United States. DOI: 10.1117/12.2507927
  12. Abhinav Gautam, Amitesh Kumar, Ritu Raj Singh, Vishnu Priye, “Highly sensitive FBG-based low-strain sensing system using carrier-suppressed phase modulation”, SPIE Photonics West, 2 - 7 February 2019, San Francisco, California, United States. DOI: 10.1117/12.2507745
  13. Anamika Singh, Ritu Raj Singh, “Two-dimensional subwavelength grating-based waveguide-to-fiber coupler”, SPIE Photonics West, 2 - 7 February 2019, San Francisco, California, United States. DOI: 10.1117/12.2507353
  14. Rukmani Singh, Ritu Raj Singh, Dharmendra Kumar, Vishnu Priye, “Guiding and Confinement Analysis in Curved Slot Waveguide”, SPIE Photonics West, 2 - 7 February 2019, San Francisco, California, United States. DOI: 10.1117/12.2507357
  15. Dhananjoy De, Ritu Raj Singh, Vishnu Priye, “Theoretical Analysis of Modes in SOI based buried Ridge Waveguide”, Photonics 2018, 12-15 Dec. 2018, Delhi, India.
  16. Dhananjoy De, Ritu Raj Singh, Vishnu Priye, “A Comparative Analysis of TM Guided Modes in Silicon on Insulator (SOI) based Rectangular Optical Waveguide”, Frontiers in Optics/Laser Science 2018, 16-20 Sept. 2018, Washington, DC, USA. DOI: 10.1364/FIO.2018.JTu2A.59
  17. Ritu Raj Singh, Soumya Kumari, Abhinav Gautam, Vishnu Priye, “Radius Optimization of SOI based Rectangular Waveguide Ring Resonator Filter”, Frontiers in Optics/Laser Science 2018, 16-20 Sept. 2018, Washington, DC, USA. DOI: 10.1364/FIO.2018.JW3A.107
  18. Anumeha Varma, Dhananjoy De, Ritu Raj Singh, Vishnu Priye, “Rectangular Waveguide based SOI Toluene Gas Sensor”, Frontiers in Optics/Laser Science 2018, 16-20 Sept. 2018, Washington, DC, USA. DOI: 10.1364/FIO.2018.JW4A.107
  19. Ritu Raj Singh, Soumya Kumari, Vishnu Priye, “Rectangular Waveguide based SOI Ring Resonator”. (Poster presented at the 3Rd International Conference on Microwave and Photonics (ICMAP), 9th -11th February 2018, Dhanbad, India). 
  20. Vishnu Priye, Ritu Raj Singh, Soumya Kumari, Nishit Malviya, “SNORW Biosensor for Measuring Glucose Level in Blood Sample”. Photonics Europe 2018, 22–26 April 2018, Strasbourg, France. DOI: 10.1117/12.2306383
  21. Ritu Raj Singh, Vishnu Priye, “Modal Characteristics of Conventional Slot and Silicon Nanowire Optical Rectangular Waveguide”, 3rd International Conference on Microwave and Photonics (ICMAP), 9th -11th February 2018, Dhanbad, India. DOI: 10.1109/ICMAP.2018.8354632 
  22. Abhinav Gautam, Ritu Raj Singh, Amitesh Kumar, Jaisingh Thangaraj, Vishnu Priye, “FBG Based Optical Surveillance Network for Oil and Gas Pipelines”, Frontiers in Optics/Laser Science 2018, 16-20 Sept. 2018, Washington, DC, USA. DOI: 10.1364/FIO.2018.JW4A.85
  23. Rukmani Singh, Ritu Raj Singh, Vishnu Priye, “Optical Biosensor Based on Guided Mode Grating Coupler”, Frontiers in Optics/Laser Science 2018, 16-20 Sept. 2018, Washington, DC, USA. DOI: 10.1364/FIO.2018.JTu2A.114
  24. Sai Eagala, Abhinav Gautam, Ritu Raj Singh, Amitesh Kumar, Vishnu Priye, “Analysis and Optimization of Edge-Filter Interrogation Scheme for FBG Sensors”. Frontiers in Optics/Laser Science 2018, 16-20 Sept. 2018, Washington, DC, USA. DOI 10.1364/FIO.2018.JTu2A.83
  25. Abhinav Gautam, Ritu Raj Singh, Amitesh Kumar, Jaisingh Thangaraj, “FBG Based Sensing Architecture for Traffic Surveillance in Railways”, 3rd International Conference on Microwave and Photonics (ICMAP), 9th -11th February 2018, Dhanbad, India. DOI: 10.1109/ICMAP.2018.8354567 
  26. Abhinav Gautam, Amitesh Kumar, Ritu Raj Singh, Vishnu Priye, “FBG Based Optical Surveillance Network for Oil and Gas Pipelines”, (Poster presented at the 3rd ICMAP, 9th -11th February 2018, Dhanbad, India).
  27. Abhinav Gautam, Ritu Raj Singh, Amitesh Kumar, Vishnu Priye, “Architecture of optical sensing and monitoring for pipelines using FBG”, 3rd International Conference on Recent Advances in Information Technology (RAIT) 2016, 3-5 March 2016, Dhanbad, India. DOI: 10.1109/RAIT.2016.7507927
  28. Ritu Raj Singh, Amitesh Kumar, Abhinav Gautam, Vishnu Priye, “Microwave frequency estimation with high accuracy based on Mach-Zehnder Modulator and Phase Modulator”, International Conference on Microwave and Photonics (ICMAP) 2015, 11-13 Dec. 2015, Dhanbad, India. DOI: 10.1109/ICMAP.2015.7408699
  29. Amitesh Kumar, Ritu Raj Singh, Vishnu Priye, “Instantaneous microwave frequency measurement using dual drive Mach-Zehnder Modulator”, 9th International Conference on Industrial and Information Systems (ICIIS) 2014, 15-17 Dec. 2014, Gwalior, India. DOI: 10.1109/ICIINFS.2014.7036576

Books/Book Chapters

  1. Ritu Raj Singh “Silicon Nanowire Optical Waveguide Sensors: Design and Analysis”, Manakin Press, 2025
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