Dr. Ramesh K. Sonkar Profile

Dr. Ramesh K. Sonkar

Associate Professor at Indian Institute Of Technology Guwahati

SPIE Involvement:

Author

Area of Expertise:

Semiconductor Waveguide Grating , Fabrication of III-V Compund Semiconductor , Clean Room , Quantum Well Intermixing , Grating

Publications (12)

SPIE Journal Paper | 1 August 2023

High coupling efficiency photonic crystal waveguide for compact channel drop filter design on silicon-on-insulator platform

Soibam Aruna Chanu, Ramesh Kumar Sonkar

OE, Vol. 62, Issue 08, 087101, (August 2023) https://doi.org/10.1117/12.10.1117/1.OE.62.8.087101

KEYWORDS: Waveguides, Tunable filters, Silicon, Photonic crystals, Design and modelling, Electronic filtering, Optical engineering, Wavelength division multiplexing, Transmittance, Optical filters

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SPIE Journal Paper | 20 August 2021

Implementation of polarization rotation using microring resonator and its application to design all-optical switch

Gaurav Kumar Bharti, Ramesh Sonkar

OE, Vol. 60, Issue 08, 085109, (August 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.8.085109

KEYWORDS: Polarization, Waveguides, Resonators, Microrings, Switches, Instrument modeling, Birefringence, Optical engineering, Finite-difference time-domain method, Light wave propagation

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SPIE Journal Paper | 18 January 2021

Performance analysis of grating-assisted passive mode-division multiplexing device using silicon photonics for high-speed RoF/RoFSO communication

Dhiman Kakati, Manoranjan Minz, Ramesh Kumar Sonkar

OE, Vol. 60, Issue 01, 016102, (January 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.1.016102

KEYWORDS: Free space optics, Multiplexing, Receivers, Silicon, Modulation, Demultiplexers, Polarization, Waveguides, Optical engineering, Finite-difference time-domain method

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SPIE Journal Paper | 14 December 2020

Performance assessment of a silicon traveling-wave Mach–Zehnder modulator employing quasi-TM mode propagation

Darpan Mishra, Ramesh Kumar Sonkar

OE, Vol. 59, Issue 12, 125104, (December 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.12.125104

KEYWORDS: Phase shifts, Modulators, Silicon, Phase shift keying, Single mode fibers, Waveguides, Modulation, Absorption, Optical engineering, Scattering

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SPIE Journal Paper | 16 April 2020

Modulation instability in lossy and nonlinear thulium-doped fiber amplifiers in S and near-C bands: analytical and numerical approach

Mohd Khan, Ramesh Sonkar

OE, Vol. 59, Issue 04, 046105, (April 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.4.046105

KEYWORDS: Fiber amplifiers, Modulation, Signal attenuation, Optical amplifiers, Optical engineering, Terahertz radiation, Optical fibers, Thulium, Nonlinear optics, Dispersion

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SPIE Journal Paper | 25 January 2020

Mode, dispersion, and loss analysis of a graded-index germanium-doped silicon buried strip waveguide

Darpan Mishra, Ramesh Kumar Sonkar

OE, Vol. 59, Issue 01, 016118, (January 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.1.016118

KEYWORDS: Waveguides, Dispersion, Wave propagation, Silicon, Refractive index, Germanium, Absorption, Scattering, Coarse wavelength division multiplexing, Optical engineering

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Proceedings Article | 19 November 2019 Paper

An ion-ion interaction analysis-based performance estimation of thulium-doped fiber amplifiers in s-band including amplified spontaneous emission

Mohd Mansoor Khan, Ramesh Kumar Sonkar

Proceedings Volume 11184, 111840R (2019) https://doi.org/10.1117/12.2538911

KEYWORDS: Thulium, Statistical analysis, Fiber amplifiers, S band, Analytical research, Optical communications, Telecommunications, Data transmission, Optical amplifiers, Dense wavelength division multiplexing

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Proceedings Article | 19 November 2019 Paper

Numerical modeling and simulations on splitting of chirped optical pulses in heavily doped thulium fiber amplifiers through modal instability analysis

Mohd Mansoor Khan, Ramesh Kumar Sonkar

Proceedings Volume 11195, 1119510 (2019) https://doi.org/10.1117/12.2538902

KEYWORDS: Fiber amplifiers, Thulium, Numerical modeling, Computer simulations, Optical amplifiers, Frequency combs, Mathematical modeling, Optical fibers, Continuous wave operation, Fiber optic communications

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Proceedings Article | 19 November 2019 Paper

Bandwidth optimization of germanium-doped silicon optical modulator for high-speed applications

Darpan Mishra, Manoranjan Minz, Ramesh Kumar Sonkar, Mohd. Mansoor Khan

Proceedings Volume 11193, 111930T (2019) https://doi.org/10.1117/12.2538873

KEYWORDS: Silicon, Optical modulators, Modulators, Data integration, Internet, Optical communications, Optical components, Photonic devices, Channel projecting optics, Integrated optics

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Proceedings Article | 19 November 2019 Paper

Grating-assisted MDM-PDM hybrid (de)multiplexer for optical interconnect applications

Manoranjan Minz, Darpan Mishra, Ramesh Kumar Sonkar, Mohd. Mansoor Khan

Proceedings Volume 11193, 111930C (2019) https://doi.org/10.1117/12.2538744

KEYWORDS: Waveguides, Optical interconnects, Single mode fibers, Waveguide modes, Multiplexing, Finite-difference time-domain method, Wavelength division multiplexing, Polarization, Optical networks, Silicon

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SPIE Journal Paper | 5 February 2019

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

Mohd Mansoor Khan, Ramesh Sonkar

OE, Vol. 58, Issue 02, 026103, (February 2019) https://doi.org/10.1117/12.10.1117/1.OE.58.2.026103

KEYWORDS: Modulation, Signal analyzers, Phase shift keying, Fiber amplifiers, Optical amplifiers, Dense wavelength division multiplexing, Absorption, Thulium, Signal attenuation, Optical engineering

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Proceedings Article | 15 June 2015 Paper

Design and proposal of dual line-of-defense perimeter watchdog incorporating optimally designed FBG based accelerometers and strain sensors using single optical fiber

Mohd. Mansoor Khan, Ramesh Kumar Sonkar

Proceedings Volume 9654, 965413 (2015) https://doi.org/10.1117/12.2181626

KEYWORDS: Fiber Bragg gratings, Sensors, Optical fibers, Finite element methods, SolidWorks, Neck, Electronics, Computer intrusion detection, Analytical research, Refractive index

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Showing 5 of 12 publications

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