HOME | PEOPLE | RESEARCH | FACILITIES | PROJECTS | PUBLICATIONS | OPPORTUNITIES | EVENTS | GALLERY | CONTACT US

 

 

Publications

 

2020 

1.        Dhiman Kakati, Manoranjan Minz, and Ramesh Sonkar, " Performance of Grating-Assisted Passive MDM Device using Silicon Photonics for High-Speed RoF/RoFSO Communication " Accepted for publication in Optical Engineering, 2020.

 

2.        Darpan Mishra and Ramesh Kumar Sonkar, " Performance assessment of a silicon traveling-wave Mach-Zehnder modulator employing quasi-TM mode propagation " Accepted for publication in Optical Engineering, 2020.

 

3.        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, Volume 14, Issue 15, p. 2035 2044, 16 December 2020

 

4.     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, Volume: 48, Issue: 11, Page (s): 3807 - 3814, Nov. 2020

 

5.     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, Issue: 9, pp. 1501-1505 September 2020.

 

6.     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, Article number: 400(1-19), September 2020

 

7.     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, JTu1A.50, Virtual Web Conference,14-17 September 2020,

 

8.     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, C5F_3, 3-5 August 2020, Australia.

 

9.     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, P2_21, 3-5 August 2020, Australia.

 

10.  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.

 

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

 

12.  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.

 

13.  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.

 

14.     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.

 

15.     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.

 

16.     Manoranjan Minz and Ramesh Kumar Sonkar. "Design and Analysis of a Grating Assisted Hybrid Mode and Polarization (De)multiplexer," Applied Optics, Vol. 59, Issue 3, pp. 785-794 (2020).

 

 

2019 

 

17.     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

 

18.     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

 

19.     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

 

20.    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

 

21.    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

 

22.    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

 

23.    Sumantra Chaudhuri, Rakhesh Singh Kshetrimayum, Ramesh Kumar Sonkar, and Mohit Mishra "Dual circularly polarised travelling wave slot antenna array," Electronics Letters, Vol. 55, Issue 20, pp 1071-1073, 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.    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, Issue 10, p.e21903, 2019

 

29.    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

 

30.    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

 

31.    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, 1348-1354, May 2019.

 

32.    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

 

33.    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

 

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

 

35.    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

 

36.    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

 

37.    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

 

38.    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

 

39.    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.

 

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

 

41.    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, 026103, 2019.

 

 

2018

42.     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, DOI: https://doi.org/10.1515/joc-2018-0192, Published Online: 2018-11-30

 

43.     Darpan Mishra, R. K. Sonkar, "Design and Analysis of a Graded-Index Strained SiGe Optical PN Phase Shifter", IEEE Photonics Journal, DECEMBER 2018, Volume: 10, Issue: 6, Page(s): 1-14.

 

44.     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.

 

45.     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.

 

2017

46.     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.

 

47.     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.

 

48.     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.

 

2016

49.    Ramesh K Sonkar and Utpal Das, "F-ion implanted quantum well intermixed waveguide grating," Opt Quant Electron (2016) 48: 58. doi:10.1007/s11082-015-0343-7.

 

50.    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.

 

51.    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.

 

52.    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.

 

53.    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.

 

2015 and before

 

54.    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.

 

55.    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.

 

56.    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.

 

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

 

58.    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.

 

59.    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.

 

60.    Ramesh K. Sonkar and Utpal Das, "Quantum well intermixed waveguide grating", Opt. Quant. Electron, 2011, Volume 42, Numbers 9-10, 631-643.

 

61.    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, October 2010, pp 43-51.

 

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

 

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

 

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

 

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

 

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

 

67.    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.

 

 

 

 

 

 

 

 

 

 

 

Useful Links

 

IIT Guwahati

Department of Electronics and Electrical Engineering

Academic Affairs

 

 

2018 APSL IIT Guwahati

 

Advanced Photonics Simulation Laboratory

Department of Electronics and Electrical Engineering

Indian Institute of Technology Guwahati, Assam-781039, India