Journal Publications

1. Nayek N., Joshi M.K., Sonkar R.K., Tiwari T., Bhattacharjee R., "Design and Analysis of Width-Modulated Two-Section Sine Waveguide for G-Band Traveling-Wave Tube", IEEE Transactions on Electron Devices , vol.68, issue 12 , (DOI - 10.1109/TED.2021.3117894) ,pp.6458-6464, [2021].

2. Minz M., Sonkar R.K., "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, issue 9 , (DOI - 10.1364/AO.418942) ,pp.2640-2646, [2021].

3. Mishra D., Sonkar R.K., "Analysis of a SiGe Mach???Zehnder modulator for 400G data communication", Applied Optics , vol.60, issue 7 , (DOI - 10.1364/AO.416785) ,pp.2083-2092, [2021].

4. Mishra D., Sonkar R.K., "Effect of wafer tilt during ion implantation on the performance of a silicon traveling-wave Mach-Zehnder modulator", IEEE Access , vol.9 , (DOI - 10.1109/ACCESS.2021.3125446) ,pp.149993-150003, [2021].

5. Kakati D., Minz M., Sonkar R.K., "Performance analysis of grating-assisted passive mode-division multiplexing device using silicon photonics for high-speed RoF/RoFSO communication", Optical Engineering , vol.60, issue 1 , (DOI - 10.1117/1.OE.60.1.016102) [2021].

6. S. Chaudhuri, M. Mishra, R. S. Kshetrimayum, R. K. Sonkar, H. Chel, and V. K. Singh, "Rectangular DRA Array for 24 GHz ISM-Band Applications", IEEE Antennas and Wireless Propagation Letters (Impact Factor: 4.2) , vol.19, issue 9 , (DOI - 10.1109/LAWP.2020.3007585) ,pp.1501-1505, [2020].

7. Nayek N., Joshi M.K., Sonkar R.K., Tiwari T., Bhattacharjee R., "Design and efficiency enhancement of a Ka-band industrial gyrotron", IEEE Transactions on Plasma Science , vol.48, issue 11 , (DOI - 10.1109/TPS.2020.3026696) ,pp.3807-3814, [2020].

8. Mishra D., Sonkar R.K., "Performance assessment of a silicon traveling-wave Mach-Zehnder modulator employing quasi-TM mode propagation", Optical Engineering , vol.59, issue 12 , (DOI - 10.1117/1.OE.59.12.125104) [2020].

9. Minz M., Sonkar R.K., "Numerical modeling and analysis of a TM mode-division (de)multiplexer based on grating assisted couplers", Optical and Quantum Electronics , vol.52, issue 9 , (DOI - 10.1007/s11082-020-02514-2) [2020].

10. Shukla V., Sonkar R.K., Srivastava R., "Performance comparison between recirculating loop buffer-based optical packet switch architectures", Indian Journal of Physics , vol.94, issue 7 , (DOI - 10.1007/s12648-019-01540-5) ,pp.1085-1096, [2020].

11. Khan M.M., Sonkar R.K., "Modulation instability in lossy and nonlinear thulium-doped fiber amplifiers in S and near-C bands: Analytical and numerical approach", Optical Engineering , vol.59, issue 4 , (DOI - 10.1117/1.OE.59.4.046105) [2020].

12. Mishra D., Kumar Sonkar R., "2D modeling of silicon optical PN phase shifter", Applied Optics , vol.59, issue 4 , (DOI - 10.1364/AO.382816) ,pp.998-1007, [2020].

13. Mishra D., Sonkar R.K., "Mode, dispersion, and loss analysis of a graded-index germanium-doped silicon buried strip waveguide", Optical Engineering , vol.59, issue 1 , (DOI - 10.1117/1.OE.59.1.016118) [2020].

14. Minz M., Sonkar R.K., "Design and analysis of a grating assisted hybrid mode and polarization division (de)multiplexer", Applied Optics , vol.59, issue 3 , (DOI - 10.1364/AO.379830) ,pp.785-794, [2020].

15. Minz M., Sonkar R.K., "Numerical design and analysis of a 3-channel grating assisted mode-division (de)multiplexer", Optik , vol.187 , (DOI - 10.1016/j.ijleo.2019.02.107) ,pp.272-277, [2019].

16. Mishra D., Sonkar R.K., "Analysis of a process simulated graded-index strained silicon-germanium optical phase shifter", Optical Materials , vol.89 , (DOI - 10.1016/j.optmat.2019.02.001) ,pp.604-608, [2019].

17. Khan M.M., Sonkar R.K., "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, issue 2 , (DOI - 10.1117/1.OE.58.2.026103) [2019].

18. Mishra D., Sonkar R.K., "Analysis of germanium-doped silicon vertical PN junction optical phase shifter", Journal of the Optical Society of America B: Optical Physics , vol.36, issue 5 , (DOI - 10.1364/JOSAB.36.001348) ,pp.1348-1354, [2019].

19. Mishra D., Sonkar R.K., "Design and analysis of a graded-index strained Si1-x Gex Optical PN Phase Shifter", IEEE Photonics Journal , vol.10, issue 6 , (DOI - 10.1109/JPHOT.2018.2880077) [2018].

20. Khan M.M., Sonkar R.K., "Signal Wavelength Effect on Overmodulation in Thulium Doped Fiber Amplifiers with Amplified Spontaneous Emission: A Simulink Pedestal", Journal of Optical Communications , (DOI - 10.1515/joc-2018-0192) [2018].

21. Sonkar R.K., Das U., "F-ion implanted quantum well intermixed waveguide grating", Optical and Quantum Electronics , vol.48, issue 1 , (DOI - 10.1007/s11082-015-0343-7) ,pp.1-7, [2016].

22. Sonkar R.K., Das U., "Quantum well intermixed waveguide grating", Optical and Quantum Electronics , vol.42, issue 10-Sep , (DOI - 10.1007/s11082-011-9486-3) ,pp.631-643, [2011].

Conference Publications

1. Bharti G.K., Sonkar R.K., "Modeling of polarization-rotation based photonic D flip-flop using a compact micro-ring resonator", Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD , vol.2021-September , (DOI - 10.1109/NUSOD52207.2021.9541469) ,pp.129-130, [2021].

2. Minz M., Mishra D., Sonkar R.K., "SWG-based compact broadband two-mode multiplexer on SOI platform", TENSYMP 2021 - 2021 IEEE Region 10 Symposium , (DOI - 10.1109/TENSYMP52854.2021.9551011) [2021].

3. S. Chaudhuri, R. S. Kshetrimayum, R. K. Sonkar and M. Mishra, "Wideband Rectangular Dielectric Resonator Antenna Array for ISM Band Applications", IEEE TENSYMP, Dhaka, Bangladesh , (DOI - 10.1109/TENSYMP50017.2020.9230908) ,pp.622-625, [2020].

4. Mishra D., Minz M., Sonkar R.K., "Effect of pre-amorphization and annealing on the performance of a silicon optical phase shifter", Optics InfoBase Conference Papers , (DOI - 10.1364/FIO.2020.JTu1A.50) [2020].

5. Minz M., Mishra D., Sonkar R.K., "Compact Polarization Beam Splitter Using Contra- Directional Gratings on SOI platform", 2020 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2020 - Proceedings , (DOI - 10.1364/CLEOPR.2020.P2_21) [2020].

6. Kakati D., Sonkar R.K., "A 2??320 Gbps Hybrid PDM-MDM-OFDM System for High-Speed Terrestrial FSO Communication", 2020 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2020 - Proceedings , (DOI - 10.1364/CLEOPR.2020.C5F_3) [2020].

7. Mishra D., Minz M., Sonkar R.K., "Performance Evaluation of a Quasi-TM Mode Silicon Optical Modulator", 2020 IEEE Region 10 Symposium, TENSYMP 2020 , (DOI - 10.1109/TENSYMP50017.2020.9231013) ,pp.202-205, [2020].

8. Sumanth V., Manish Chanu S.A., Sonkar R.K., "Silicon Waveguides for Mid-infrared Integrated Photonics", 2020 IEEE 8th International Conference on Photonics, ICP 2020 , (DOI - 10.1109/ICP46580.2020.9206480) ,pp.103-104, [2020].

9. Khan M., Sonkar R.K., "Propagation Loss and Non-linear effects on Modulation Instability in Thulium Doped Fiber Amplifiers operating in S and near-C bands", 2020 IEEE 8th International Conference on Photonics, ICP 2020 , (DOI - 10.1109/ICP46580.2020.9206421) ,pp.48-49, [2020].

10. Mishra D., Minz M., Sonkar R.K., "A 2D Optimization Model for Silicon Optical PN Phase Shifter Simulation", 2020 IEEE 8th International Conference on Photonics, ICP 2020 , (DOI - 10.1109/ICP46580.2020.9206477) ,pp.97-98, [2020].

11. S. Chaudhuri, R. S. Kshetrimayum, R. K. Sonkar, and D. Mishra, "High Gain Dual Linearly Polarized Patch Antenna Array", PhotonIcs & Electromagnetics Research Symposium (PIERS), Rome, Italy , vol.2019-June , (DOI - 10.1109/PIERS-Spring46901.2019.9017365) ,pp.961-963, [2019].

12. S. Chaudhuri, R. S. Kshetrimayum, R. K. Sonkar, and D. Mishra, "Dual Circularly Polarized Slot Antenna with Novel Isolator", PhotonIcs & Electromagnetics Research Symposium (PIERS), Rome, Italy , vol.2019-June , (DOI - 10.1109/PIERS-Spring46901.2019.9017590) ,pp.595-598, [2019].

13. S. Chaudhuri, R. S. Kshetrimayum and R. K. Sonkar, "High Inter-port Isolation Dual Circularly Polarized Modified Franklin Microstrip Antenna", European Conference on Antennas and Propagation (EuCAP), Krakaw, Poland [2019].

14. Nayek N., Sonkar R., Joshi M.K., Tiwari T., Bhattacharjee R., "H-plane loaded sine waveguide TWT in G-band", Asia-Pacific Microwave Conference Proceedings, APMC , vol.2019-December , (DOI - 10.1109/APMC46564.2019.9038322) ,pp.1250-1252, [2019].

15. Nayek N., Sonkar R.K., Bhattacharjee R., "Elimination of Mode Competition in mathbf{TE}-{0n} Mode Gyrotron", Progress in Electromagnetics Research Symposium , vol.2019-June , (DOI - 10.1109/PIERS-Spring46901.2019.9017855) ,pp.3073-3076, [2019].

16. Manish Sumanth V., Chanu S.A., Kumar Sonkar R., "Modal Analysis of Silicon Photonic Waveguides at Mid-IR Wavelengths", 2019 Workshop on Recent Advances in Photonics, WRAP 2019 , (DOI - 10.1109/WRAP47485.2019.9013710) [2019].

17. Minz M., Mishra D., Sonkar R.K., "Design of a hybrid mode and polarization division multiplexer", Asia Communications and Photonics Conference, ACP , vol.2019-November [2019].

18. Khan M.M., Sonkar R.K., "Performance estimation of Thulium doped fiber amplifiers in S-Band including Amplified Spontaneus Emission: Ion-Ion interaction analysis", IEEE Region 10 Annual International Conference, Proceedings/TENCON , vol.2019-October , (DOI - 10.1109/TENCON.2019.8929580) ,pp.155-159, [2019].

19. Minz M., Mishra D., Sonkar R.K., "Mode-Division Multiplexer with Contra-directional Couplers", OECC/PSC 2019 - 24th OptoElectronics and Communications Conference/International Conference Photonics in Switching and Computing 2019 , (DOI - 10.23919/PS.2019.8818067) [2019].

20. Mishra D., Minz M., Sonkar R.K., "Effect of Germanium Doping on the Performance of a Silicon Optical Modulator", Progress in Electromagnetics Research Symposium , vol.2019-June , (DOI - 10.1109/PIERS-Spring46901.2019.9017271) ,pp.3683-3685, [2019].

21. Minz M., Mishra D., Sonkar R.K., "Design of a 3-channel Mode-division Multiplexer Based on Grating Assisted Couplers", Progress in Electromagnetics Research Symposium , vol.2019-June , (DOI - 10.1109/PIERS-Spring46901.2019.9017359) ,pp.3686-3688, [2019].

22. Minz M., Mishra D., Sonkar R.K., "Design of a hybrid mode and polarization division multiplexer", Optics InfoBase Conference Papers , vol.Part F138-ACPC 2019 [2019].

23. Mishra D., Minz M., Sonkar R.K., Khan M.M., "Bandwidth optimization of germanium-doped silicon optical modulator for high-speed applications", Proceedings of SPIE - The International Society for Optical Engineering , vol.11193 , (DOI - 10.1117/12.2538873) [2019].

24. Minz M., Mishra D., Sonkar R.K., Khan M.M., "Grating-assisted MDM-PDM hybrid (de)multiplexer for optical interconnect applications", Proceedings of SPIE - The International Society for Optical Engineering , vol.11193 , (DOI - 10.1117/12.2538744) [2019].

25. Khan M.M., Sonkar R.K., "Numerical modeling and simulations on splitting of chirped optical pulses in heavily doped thulium fiber amplifiers through modal instability analysis", Proceedings of SPIE - The International Society for Optical Engineering , vol.11195 , (DOI - 10.1117/12.2538902) [2019].

26. Khan M.M., Sonkar R.K., "An ion-ion interaction analysis-based performance estimation of thulium-doped fiber amplifiers in s-band including amplified spontaneous emission", Proceedings of SPIE - The International Society for Optical Engineering , vol.11184 , (DOI - 10.1117/12.2538911) [2019].

27. Mishra D., Minz M., Sonkar R.K., "Mode and Loss Analysis of an Ultra-Small Graded-Index Strip Waveguide for Multimode Datacenter Applications", 2018 IEEE 7th International Conference on Photonics, ICP 2018 , (DOI - 10.1109/ICP.2018.8533175) [2018].

28. Minz M., Mishra D., Sonkar R.K., "Design of a Grating Assisted Mode-Division Multiplexer", 2018 IEEE 7th International Conference on Photonics, ICP 2018 , (DOI - 10.1109/ICP.2018.8533192) [2018].

29. Mishra D., Sonkar R.K., "Effect of Junction Profile on the Phase and Loss Characteristics of a Silicon Optical Modulator", WRAP 2017 - Workshop on Recent Advances in Photonics , (DOI - 10.1109/WRAP.2017.8468593) [2018].

30. Raikham P., Kumar R., Shah R.K., Hazarika M., Sonkar R.K., "Non-invasive blood components measurement using optical sensor system interface", 2018 3rd International Conference on Microwave and Photonics, ICMAP 2018 , vol.2018-January , (DOI - 10.1109/ICMAP.2018.8354638) ,pp.1-2, [2018].

31. Khan M.M., Sonkar R.K., "Overmodulation gain dynamics in Thulium doped fiber amplifiers including amplified spontaneous emission", IEEE Region 10 Annual International Conference, Proceedings/TENCON , vol.2017-December , (DOI - 10.1109/TENCON.2017.8228301) ,pp.2604-2608, [2017].

32. Mishra D., Sonkar R.K., "Mode and Loss Analysis of a Graded Si1-xGex Strip Waveguide", Asia Communications and Photonics Conference, ACP , vol.2017-August , (DOI - 10.1364/ACPC.2017.Su2A.159) [2017].

33. Raad B.R., Sonkar R.K., Kondekar P.N., "Determination of transformer oil age using long period grating", 2015 Workshop on Recent Advances in Photonics, WRAP 2015 , (DOI - 10.1109/WRAP.2015.7805965) [2017].

34. Mishra D., Sonkar R.K., "Mode and loss analysis of a graded si11-XxGex Strip waveguide", Optics InfoBase Conference Papers , vol.Part F83-ACPC 2017 , (DOI - 10.1364/ACPC.2017.Su2A.159) [2017].

35. Abhishek K., Saxena A.K., Sonkar R.K., "Non-invasive measurement of heart rate and hemoglobin concentration level through fingertip", 2015 IEEE International Conference on Signal Processing, Informatics, Communication and Energy Systems, SPICES 2015 , (DOI - 10.1109/SPICES.2015.7091549) [2015].

36. Khan Mohd.M., Sonkar R.K., "Design and proposal of dual line-of-defense perimeter watchdog incorporating optimally designed FBG based accelerometers and strain sensors using single optical fiber", Proceedings of SPIE - The International Society for Optical Engineering , vol.9654 , (DOI - 10.1117/12.2181626) [2015].

37. Chadha T., Choudhary V., Jain R., Paul R., Rawat M., Sonkar R.K., "Noninvasive in-vivo measurement of hemoglobin and glucose concentration of human blood", Optics InfoBase Conference Papers , (DOI - 10.1364/PHOTONICS.2016.Th3A.2) [2014].

38. Das U., Sonkar R.K., "CWDM integrated waveguide gratings by InGaAsP/InP quantum well intermixing", 2012 7th International Conference on Electrical and Computer Engineering, ICECE 2012 , (DOI - 10.1109/ICECE.2012.6471600) ,pp.514-517, [2012].

39. Sonkar R.K., Das U., "Fabrication of F-ion implanted quantum well intermixed waveguide grating", 2012 Photonics Global Conference, PGC 2012 , (DOI - 10.1109/PGC.2012.6458096) [2012].

40. Sonkar R.K., Das U., "Integrated waveguide grating using impurity induced quantum well intermixing", 2008 Asia Optical Fiber Communication and Optoelectronic Exposition and Conference, AOE 2008 [2008].

41. Sonkar R.K., Das U., "Integrated waveguide grating using impurity induced quantum well intermixing", Optics InfoBase Conference Papers , (DOI - 10.1364/aoe.2008.sak26) [2008].

42. Sonkar R.K., Das Utpal., "Analysis of implantation induced gratings for CWDM", Optics InfoBase Conference Papers [2006].

43. Sonkar R.K., Das U., "Analysis of implantation induced gratings for CWDM", Quantum Electronics and Laser Science Conference (QELS) , vol.2 ,pp.904-906, [2005].

44. Sonkar R.K., Das U., "Analysis of implantation induced gratings for CWDM", Optics InfoBase Conference Papers [2005].

45. Sonkar R.K., Das Utpal., "Analysis of implantation induced gratings for CWDM", Optics InfoBase Conference Papers [2005].