Journals

    2022
  1. Manoranjan Minz and Ramesh Kumar Sonkar, "Design of a Grating Assisted Silicon Hybrid Mode-,Polarization-, and Wavelength-Division (De)multiplexer for On-chip Optical Interconnects," Applied Optics. (accepted)

  2. Gaurav Kumar Bharti and Ramesh Kumar Sonkar, "Design and performance analysis of all-optical D and T flip-flop in a polarization rotation based micro-ring resonator," Optical and Quantum Electronics, vol. 54, no. 3, pp. 1-13, March 2022.


  3. 2021
  4. Darpan Mishra and Ramesh Kumar Sonkar, "Effect of Wafer Tilt During Ion Implantation on the Performance of a Silicon Traveling-Wave Mach-Zehnder Modulator," IEEE Access, vol. 9, pp. 149993-150003, November 2021.

  5. Narugopal Nayek, Mohit Kumar Joshi, Ramesh Kumar Sonkar, Tapeshwar Tiwari, and Ratnajit Bhattacharjee, "Design and Analysis of Width-Modulated Two-Section Sine Waveguide for G-band Travelling-Wave Tube," IEEE Transactions on Electron Devices, vol. 68, no. 12, pp. 6458-6464, October 2021.

  6. Gaurav Kumar Bharti and Ramesh Kumar Sonkar, "Implementation of polarization-rotation using micro-ring resonator and its application to design all-optical switch" Optical Engineering, vol. 60, no. 8, pp. 085109, August 2021.

  7. Manoranjan Minz and Ramesh Kumar Sonkar, "Design of a hybrid mode and wavelength division (de)multiplexer based on contra-directional grating assisted couplers on the SOI platform," Applied Optics, vol. 60, no. 9, pp. 2640-2646, March 2021.

  8. Darpan Mishra and Ramesh Kumar Sonkar, "Analysis of a SiGe Mach-Zehnder modulator for 400G data communication," Applied Optics, vol. 60, no. 7, pp. 2083-2092, March 2021. (Editor's Pick)

  9. Dhiman Kakati, Manoranjan Minz, Ramesh Kumar Sonkar, "Performance analysis of grating-assisted passive mode-division multiplexing device using silicon photonics for high-speed RoF/RoFSO communication," Optical Engineering, vol. 60, no. 1, pp. 016102, January 2021.


  10. 2020
  11. Darpan Mishra and Ramesh Kumar Sonkar, "Performance assessment of a silicon traveling-wave Mach–Zehnder modulator employing quasi-TM mode propagation" Optical Engineering, vol. 59, no. 12, pp. 125104, December 2020.

  12. Sumantra Chaudhuri, Rakhesh Singh Kshetrimayum, and Ramesh Kumar Sonkar, "High port-to-port isolation dual circularly polarised microstrip patch antenna with multifunction DGS," IET Microwaves, Antennas & Propagation, vol. 14, no. 15, pp. 2035 - 2044, December 2020.

  13. Nayek, Narugopal; Joshi, Mohit; Sonkar, Ramesh; Tiwari, Tapeshwar; Bhattacharjee, Ratnajit, "Design and Efficiency Enhancement of a Ka-band Industrial Gyrotron," IEEE Transactions on Plasma Science, vol. 48, no. 11, pp. 3807 - 3814, November 2020.

  14. Manoranjan Minz and Ramesh Kumar Sonkar, "Numerical Modeling and Analysis of a TM Mode-Division (De)multiplexer Based on Grating Assisted Couplers," Optical and Quantum Electronics, vol. 52, no. 9, pp. 1-19, September 2020.

  15. Sumantra Chaudhuri, Mohit Mishra, Rakhesh Singh Kshetrimayum, Ramesh Kumar Sonkar, Haradhan Chel, and Vivek Kumar Singh, "Rectangular DRA Array for 24 GHz ISM-Band Applications," IEEE Antennas and Wireless Propagation Letters, vol. 19, no. 9, pp. 1501-1505, July 2020.

  16. Mohd. Mansoor Khan and Ramesh Kumar Sonkar, "Modulation instability in lossy and nonlinear thulium-doped fiber amplifiers in S and near-C bands: analytical and numerical approach", Optical Engineering, vol. 59, no. 4, pp. 046105, April 2020.

  17. Darpan Mishra and Ramesh Kumar Sonkar, "2D Modeling of Silicon Optical PN Phase Shifter," Applied Optics, vol. 59, no. 4, pp. 998-1007, February 2020.

  18. Manoranjan Minz and Ramesh Kumar Sonkar. "Design and Analysis of a Grating Assisted Hybrid Mode and Polarization (De)multiplexer," Applied Optics, vol. 59, no. 3, pp. 785-794, January 2020.

  19. Darpan Mishra and Ramesh Kumar Sonkar, "Mode, Dispersion, and Loss Analysis of a Graded-Index Germanium-Doped Silicon Buried Strip Waveguide" Optical Engineering, vol. 59, no. 1, pp. 016118, January 2020.


  20. 2019
  21. Sumantra Chaudhuri, Rakhesh Singh Kshetrimayum, Ramesh Kumar Sonkar, and Mohit Mishra "Dual circularly polarised travelling wave slot antenna array," Electronics Letters, vol. 55, no. 20, pp 1071-1073, October 2019.

  22. Sumantra Chaudhuri, Rakhesh Singh Kshetrimayum, Ramesh Sonkar, "High inter-port isolation dual circularly polarized slot antenna with interdigital capacitor," International Journal of RF and Microwave Computer-Aided Engineering, vol. 29, no. 10, pp. e21903, October 2019.

  23. Rakhesh Singh Kshetrimayum, Ramesh Sonkar, Sumantra Chaudhuri, "High inter-port isolation dual circularly polarized slot antenna with split-ring resonator based novel metasurface," AEU International Journal of Electronics and Communications, vol. 107, pp 146-156, July 2019.

  24. Manoranjan Minz and Ramesh Kumar Sonkar, "Numerical Design and Analysis of a 3-channel Grating Assisted Mode-Division (De)multiplexer," Optik - International Journal for Light and Electron Optics, vol. 187, pp. 272-277, June 2019.

  25. Darpan Mishra and Ramesh Kumar Sonkar, "Analysis of Germanium Doped Silicon Vertical PN Junction Optical Phase Shifter," Journal of the Optical Society of America B, vol. 36, no. 5, pp. 1348-1354, May 2019.

  26. Darpan Mishra and Ramesh Kumar Sonkar, "Analysis of a Process Simulated Graded-Index Strained Silicon-Germanium Optical Phase Shifter," Optical Materials, vol. 89, pp. 604-608, March 2019.

  27. Mohd. Mansoor Khan and Ramesh Kumar Sonkar, "Analytical Model for Signal and Gain Modulation on Thulium Doped Fiber Amplifiers in S and near-C Bands including Amplified Spontaneous Emission: Signal Power Analysis," Optical Engineering, vol. 58, no. 2, pp. 026103, February 2019.

  28. Vaibhav Shukla, Ramesh Kumar Sonkar, Rajiv Srivastava, "Performance comparison between recirculating loop buffer-based optical packet switch architectures," Indian Journal of Physics, vol. 94, no. 7, pp. 1085-1096, July 2019.


  29. 2018 and Earlier
  30. Mohd Mansoor Khan and Ramesh Kumar Sonkar, "Signal wavelength effect on overmodulation in thulium doped fiber amplifiers with amplified spontaneous emission: A simulink pedestal," Journal of Optical Communications, vol. 43, no. 1, pp. 1-8, November 2018.

  31. Darpan Mishra, R. K. Sonkar, "Design and Analysis of a Graded-Index Strained SiGe Optical PN Phase Shifter", IEEE Photonics Journal, vol. 10, no. 6, pp. 1-14, November 2018.

  32. Ramesh K Sonkar and Utpal Das, "F-ion implanted quantum well intermixed waveguide grating," Optical and Quantum Electronics, vol. 48, no. 1, pp. 1-7, January 2016.

  33. Ramesh Kumar Sonkar and Utpal Das, "Waveguide Grating Using Quantum well Intermixing", International Journal of Research and Reviews in Applied Sciences, vol. 5, no.1, pp 43-51, October 2010.

  34. Ramesh K. Sonkar and Utpal Das, "Quantum well intermixed waveguide grating", Optical and Quantum Electronics, vol. 42, no. 9, pp. 631-643, September 2011.



Conferences

    2022
  1. Soibam Aruna Chanu and Ramesh Kumar Sonkar, "Band Structure Analysis of Silica Clad Silicon-based 2D Photonic Crystal for C-band Applications," 5th IEEE Workshop on Recent Advances in Photonics (WRAP 2022), Mumbai, India, 4-6 March 2022.


  2. 2021
  3. Gaurav Kumar Bharti and Ramesh Kumar Sonkar, "Modeling of Polarization Rotation Based All Optical Logic Switch Using Ring Resonator," Accepted for inclusion in 10th IEEE CPMT Symposium Japan (ICSJ 2021), November 10-12, 2021

  4. Darpan Mishra, Manoranjan Minz, and Ramesh Kumar Sonkar, "Performance of a Pre-amorphized Traveling-wave Silicon Optical Modulator," Asia Communications and Photonics Conference, October 24-127, 2021.

  5. Manoranjan Minz, Darpan Mishra, and Ramesh Kumar Sonkar, " SWG-based compact broadband two-mode multiplexer on SOI platform," Accepted for inclusion in 2021 IEEE Region 10 Symposium (TENSYMP 2021) to be held at Grand Hyatt Jeju, Republic of Korea, 23-25, August, 2021

  6. Gaurav Kumar Bharti and Ramesh Kumar Sonkar "Modeling of polarization-rotation based photonic D flip-flop using a compact micro-ring resonator," Accepted for inclusion in 21st International Conference on Numerical Simulation of Optoelectronic Devices, 13-17 September 2021

  7. Nayek, Narugopal; Joshi, Mohit; Sonkar, Ramesh; Tiwari, Tapeshwar; Bhattacharjee, Ratnajit, "Design of Truncated Sine-waveguide Structure for THz TWT," 22nd International Vacuum Electronics Conference, IVEC 2021, 27-30 April 2021.


  8. 2020
  9. Darpan Mishra, Manoranjan Minz, and Ramesh Sonkar, "Effect of Pre-amorphization and Annealing on the Performance of a Silicon Optical Phase Shifter," OSA Frontiers in Optics + Laser Science APS/DLS, 14-17 September 2020, Virtual Web Conference.

  10. Dhiman Kakati and Ramesh Kumar Sonkar, "A 2x320 Gbps Hybrid PDM-MDM-OFDM System for High-Speed Terrestrial FSO Communication," 14th Pacific Rim Conference on Lasers and Electro-Optics 2020, 3-5 August 2020, Australia.

  11. Manoranjan Minz, Darpan Mishra, and Ramesh Kumar Sonkar, "Compact Polarization Beam Splitter Using Contra-Directional Gratings on SOI platform," 14th Pacific Rim Conference on Lasers and Electro-Optics 2020, 3-5 August 2020, Australia.

  12. Darpan Mishra, Manoranjan Minz, and Ramesh Kumar Sonkar, "Performance Evaluation of a Quasi-TM Mode Silicon Optical Modulator," IEEE Region 10 Symposium (TENSYMP) 2020, Dhaka, Bangladesh. (Best Paper Award)

  13. Sumantra Chaudhuri, Mohit Mishra, Rakhesh Singh Kshetrimayum, Ramesh Kumar Sonkar, Somen Bhattacharjee, Bhaskar Saha, “High port-to-port isolation dual circularly polarised microstrip patch antenna with multifunction DGS,” IEEE Region 10 Symposium (TENSYMP) 2020, Dhaka, Bangladesh.

  14. Veerapuram Sumanth, Manish Yadav, Soibam Aruna Chanu, and Ramesh Kumar Sonkar, "Silicon Waveguides for Mid-infrared Integrated Photonics, " 8th IEEE International Conference on Photonics 2020, 16-18 March 2020, Malaysia.

  15. Darpan Mishra, Manoranjan Minz, and Ramesh Kumar Sonkar, "A 2D Optimization Model for Silicon Optical PN Phase Shifter Simulation, " 8th IEEE International Conference on Photonics 2020, 16-18 March 2020, Malaysia.

  16. Mohd Mansoor Khan, Ramesh Kumar Sonkar, "Propagation Loss and Non-linear Effects on Modulation Instability in Thulium Doped Fiber Amplifiers Operating in S and near-C Bands," 8th IEEE International Conference on Photonics 2020, 16-18 March 2020, Malaysia.


  17. 2019
  18. Chaitanya Chauhan, Asutosh Behera, Navneet Dhar, Bidisha Das, Shweta Modak, Ramesh Kumar Sonkar, "Real Time Portable and Cost Effective Vein Finder," International Workshop on Physics of Semiconductor Devices (IWPSD) 2019, Kolkata, India December 17-20, 2019

  19. Narugopal Nayek, Ramesh Sonkar, Mohit Kr. Joshi, Tapeshwar Tiwari, Ratnajit Bhattacharjee, "H-Plane Loaded Sine Waveguide TWT in G-Band," Asia-Pacific Microwave Conference (APMC) 2019, Sands Expo & Convention Centre, Level 4 & 5, Marina Bay Sands Singapore, 10 - 13 December 2019

  20. Ursula Das, Prerana Mazumder, Ramesh Kumar Sonkar, "Smart LED Based Streetlight System," IEEE Workshop on Recent Advances in Photonics (WRAP) 2019, Guwahati, India, 13-14 December 2019

  21. Manish Yadav, Veerapuram Sumanth, Soibam Aruna Chanu, Ramesh Kumar Sonkar, "Modal Analysis of Silicon Photonic Waveguides at Mid-IR Wavelengths," IEEE Workshop on Recent Advances in Photonics (WRAP) 2019, Guwahati, India, 13-14 December 2019

  22. Manoranjan Minz, Darpan Mishra, and Ramesh Kumar Sonkar, "Design of a Hybrid Mode and Polarization Division Multiplexer," Asia Communications and Photonics Conference ACP-2019, Chengdu, China, 2-5 November 2019

  23. Mohd Mansoor Khan, Ramesh Kumar Sonkar "Performance estimation of Thulium doped fiber amplifiers in S-Band including Amplified Spontaneus Emission: Ion-Ion interaction analysis," 2019 IEEE Region 10 Conference (TENCON), Kochi, Kerala, India, October 17-20, 2019

  24. Mohd Mansoor Khan and Ramesh Kumar Sonkar, "An ion-ion interaction analysis-based performance estimation of thulium-doped fiber amplifiers in s-band including amplified spontaneous emission," SPIE/COS Photonics Asia 2019, Hangzhou, China.

  25. Manoranjan Minz, Darpan Mishra, and Ramesh Kumar Sonkar, "Grating assisted MDM-PDM hybrid (de)multiplexer for optical interconnect applications," SPIE/COS Photonics Asia 2019, Hangzhou, China.

  26. Darpan Mishra, Manoranjan Minz, and Ramesh Kumar Sonkar, "Bandwidth optimization of germanium-doped silicon optical modulator for high-speed applications," SPIE/COS Photonics Asia 2019, Hangzhou, China.

  27. Mohd Mansoor Khan, and Ramesh Kumar Sonkar, "Numerical modeling and simulations on splitting of chirped optical pulses in heavily doped thulium fiber amplifiers through modal instability analysis," SPIE/COS Photonics Asia 2019, Hangzhou, China.

  28. Manoranjan Minz, Darpan Mishra, and Ramesh Kumar Sonkar, "Mode-Division Multiplexer with Contra-directional Couplers," 24th Optoelectronics and Communications Conference /Photonic in Switching and Computing Conference (OECC/PSC 2019), July 7th to 11th 2019, Fukuoka, Japan

  29. Narugopal Nayek, Ramesh Kumar Sonkar, and Ratnajit Bhattacharjee, "Elimination of Mode Competition in TE0n Mode Gyrotron," 41st Photonics & Electromagnetics Research Symposium (PIERS) 2019, Rome, Italy, 17 June until 20 June 2019

  30. Manoranjan Minz, Darpan Mishra, and Ramesh Kumar Sonkar, "Design of a 3-channel Mode-division Multiplexer Based on Grating Assisted Couplers," 41st Photonics & Electromagnetics Research Symposium (PIERS) 2019, Rome, Italy, 17 June until 20 June 2019

  31. Darpan Mishra, Manoranjan Minz, and Ramesh Kumar Sonkar, "Effect of Germanium Doping on the Performance of a Silicon Optical Modulator," 41st Photonics & Electromagnetics Research Symposium (PIERS) 2019, Rome, Italy, 17 June until 20 June 2019

  32. Sumantra Chaudhuri, Rakhesh Singh Kshetrimayum, Ramesh Kumar Sonkar, and Darpan Mishra, "Dual Circularly Polarized Slot Antenna with Novel Isolator," 41st Photonics & Electromagnetics Research Symposium (PIERS) 2019, Rome, Italy, 17 June until 20 June 2019

  33. Sumantra Chaudhuri, Rakhesh Singh Kshetrimayum, Ramesh Kumar Sonkar, and Darpan Mishra, "High Gain Dual Linearly Polarized Patch Antenna Array," 41st Photonics & Electromagnetics Research Symposium (PIERS) 2019, Rome, Italy, 17 June until 20 June 2019

  34. Mohd Mansoor Khan, and Ramesh Kumar Sonkar, "Chirped Pulse Splitting in Heavily Doped Thulium Fiber Amplifiers through Modal Instability: Numerical Modeling and Simulation" 41st Photonics & Electromagnetics Research Symposium (PIERS) 2019, Rome, Italy, 17 June until 20 June 2019

  35. Sumantra Chaudhuri, Rakhesh Singh Kshetrimayum, Ramesh Kumar Sonkar, "High Inter-port Isolation Dual Circularly Polarized Modified Franklin Microstrip Antenna", 13th European Conference on Antenna and Propagation (EuCAP) 2019, Krakow, Poland, 31 March - 5 April 2019.


  36. 2018 and Earlier
  37. Darpan Mishra, Manoranjan Minz, Ramesh Kumar Sonkar, "Mode and Loss Analysis of an Ultra-Small Graded-Index Strip Waveguide for Multimode Datacenter Application", Proc. of the 7th IEEE International Conference on Photonics 2018, Malaysia, April 9-11, 2018.

  38. Manoranjan Minz, Darpan Mishra, Ramesh Kumar Sonkar, "Design of a Grating Assisted Mode-Division Multiplexer", Proc. of the 7th IEEE International Conference on Photonics 2018, Malaysia, April 9-11, 2018.

  39. Darpan Mishra, R. K. Sonkar, "Mode and Loss Analysis of a Graded Si1-xGex Strip Waveguide", Proc. of the 2017 Asia Communication and Photonics (ACP-2017) Conference, China, November 10-13, 2017.

  40. Mohd. Mansoor Khan and Ramesh Kumar Sonkar, "Overmodulation Gain Dynamics in Thulium Doped Fiber Amplifiers Including Amplified Spontaneous Emission", Proc. of the 2017 IEEE Region 10 Conference (TENCON), Malaysia, November 5-8, 2017.

  41. Darpan Mishra, Ramesh Kumar Sonkar , "Effect of Junction Profile on the Phase and Loss Characteristics of a Silicon Optical Modulator," Workshop on recent advances in Photonics, WRAP 2017, December 18-19, 2017, Hyderabad, India.

  42. Taslish Chadha, Vineet Chaudhary, Rohit Jain, Riya Paul, Megha Rawat and Ramesh Sonkar, "Noninvasive in-vivo Measurement of Hemoglobin and Glucose Concentration of Human Blood," The International Conference on Fiber Optics and Photonics, December 04-08, 2016, Kanpur, India.

  43. Mohd. Mansoor Khan, Ramesh Kumar Sonkar, "Analytical Model for gain modulation in Thulium doped fiber amplifiers(TDFA) operating in S-Band regime," International Conference on Light and Light based technologies, November 26-28, 2016, Tezpur, India.

  44. Debottam Dutta, Siddharth Sankar Acharjee, Jigyash Bharadwaj, Pronoy Bikash Phukon, Jahidul Islam, Ramesh Kumar Sonkar, "Modelling and Design of an LED Street Lamp," International Conference on Light and Light based technologies, November 26-28, 2016, Tezpur, India.

  45. Taslish Chadha, Vineet Choudhary, Rohit Jain, Riya Paul,Megha Rawat, R K Sonkar, "Non-Invasive in vivo Hemoglobin Measurement of Human Blood," International Conference on Light and Light based technologies, November 26-28, 2016, Tezpur, India.

  46. Mohd. Mansoor Khan and Ramesh Kumar Sonkar, "Design and proposal of dual line-of-defense perimeter watchdog incorporating optimally designed FBG based accelerometers and strain sensors using single optical fiber", Proc. SPIE 9654, International Conference on Optics and Photonics 2015, 965413 (June 15, 2015); doi:10.1117/12.2181626.

  47. Kumar Abhishek, Amodh Kant Saxena, Ramesh Kumar Sonkar, "Non-Invasive Measurement of Heart Rate and Hemoglobin Concentration Level Through Fingertip", Signal Processing, Informatics, Communication and Energy Systems (SPICES), 2015 IEEE International Conference on Year: 2015.

  48. Bhagwan Raad, Ramesh Kumar Sonkar, Pravin Kondekar, "Determination of Transformer Oil Age Using Long Period Grating", Workshop on recent advances in Photonics, WRAP 2015, December 16-17, 2015, Bangalore, India.

  49. Ramesh K. Sonkar and Utpal Das, "Fabrication of F-ion Implanted Quantum Well Intermixed Waveguide Grating", Photonics Global Conference, 13-16 December 2012, Singapore.

  50. Utpal Das and Ramesh Kumar Sonkar, "CWDM Integrated Waveguide Gratings by InGaAsP/InP Quantum Well Intermixing", 7th International Conference on Electrical and Computer Engineering, 20-22 December 2012, Dhaka, Bangladesh.

  51. Ramesh K. Sonkar and Utpal Das, "Fabrication of Waveguide Grating", XVI international Workshop on the Physics of Semiconductor Devices, December 19-22, 2011, IIT Kanpur, India.

  52. Ramesh K Sonkar and Utpal Das, "Integrated Waveguide Grating Using Impurity Induced Quantum Well Intermixing", AOE 2008, Oct 30- Nov 02, 2008, Shanghai China.

  53. Ramesh K Sonkar, Ajay K Srivastava and Utpal Das, "CWDM Bragg Gratings using F-Implanted QW Intermixing", EPDMS 06, Calcutta, India.

  54. Ramesh K. Sonkar and Utpal Das, "Analysis of Implantation Induced Gratings for CWDM", CLEO/QELS 2005, Baltimore, Maryland, USA.

  55. Ramesh K. Sonkar and Utpal Das, "InGaAs/GaAs Waveguide Grating Using Impurity Induced Quantum Well Intermixing", Accepted in IEEE Photonics Global at Singapore 2008.

  56. Ramesh Kumar Sonkar and Utpal Das, "Ion Implanted CWDM Bragg Gratings", International Conference on Optoelectronics and Lasers (ICOL), December 2005, Dehradun, India.

  57. R. K. Sonkar and Utpal Das, "Analysis of CWDM grating", Photonics 2004: Seventh International Conference on Optoelectronics, Fiber Optics and Photonics, December 9-11 2004, Cochin, India.