Physics

• OSA Travel Award 2008
• Technology Award CSIR 2015
• Best Poster Award Photonics
• GCOE-Japan Fellowship

Conferences
• Vortex Solitons in Nonlinear Multicore Fiber with Six Periphery Cores and One Central Core Khushhali S., Marini A. , Roy S. By Nonlinear Optics Topical Meeting. NLO 2023 - (Accepted/In-Press)
• Dissipative Soliton Molecules in Graphene-based Active Disordered Metamaterials Paul A. K., Marini A. , Roy S. By Nonlinear Optics Topical Meeting. NLO 2023 - (Accepted/In-Press)
• Manipulation of the trajectory of an airy pulse using linear temporal potential near zero dispersion wavelength Banergee A., Roy S. By Optics+Optoelectronics 2019 - (2019)
• Diffractive Resonant Radiation in Chirped Waveguide Arrays Lara A.P., Roy S. By 2019 Workshop on Recent Advances in Photonics, WRAP 2019 - (2019)
• Dissipative soliton dynamics in non-Kerr and Kerr type nonlinear media Roy S., Sahoo A. By SPIE Photonics Europe (2018) 10684-10689 (2018)
• Dissipative soliton dynamics in non-Kerr and Kerr type nonlinear media Sahoo A., Roy S. By Proceedings of SPIE - The International Society for Optical Engineering 10684 - (2018)
• Cavity soliton dynamics under lossy phase modulated driving field: A variational approach Roy S., Sahoo A. By OSA Advanced Photonics Congress - (2018)
• Soliton Interaction through Input Pump Phase Modulation in Passive Microresonator Saha M., Roy S. By Photonics 2018 - (2018)
• Effect of pump depletion on the evolution of cavity solitons in whispering gallery mode resonator structures Saha M., Roy S., Varshney S.K. By Proceedings of SPIE - The International Society for Optical Engineering 10684 - (2018)
• Analysis of the twin-soliton bound states in passive microresonator Saha M., Roy S., Varshney S.K. By Optics InfoBase Conference Papers Part F114-FIO 2018 - (2018)
• Analysis of the Twin-soliton Bound States in Passive Microresonator Saha M., Roy S. , Varshney S. K. By Frontier in Optics (FiO)/Laser Science (LS) - (2018)
• Optical Light Bullets Inside Si-basedWaveguide Arrays Lara A. P., Roy S. By Photonics 2018 - (2018)
• CLEO Bose S., Sahoo A. , Roy S. , Pal M. , Bhadra S. K. By - (2017)
• Frontiers in Optics Roy S., Sahoo A. By Frontiers in Optics - (2017)
• Frontiers in Optics Roy S., Banerjee A. By Frontiers in Optics - (2017)
• Frontiers in Optics Roy S. By Frontiers in Optics - (2017)
• Formation of Cascaded Dispersive Wave in Active Silicon-Based Waveguides Sahoo A., Roy S. By International Conference on Fibre Optics and Photonics 2016 - (2016)
Book Chapter/Section
• Silicon Photonics: Foundation, Recent Application and Challenges Roy S. By Encyclopedia of Materials: Electronics : Volume 2: Photonic Materials 20-40 (2023)
• Chapter 13, Suspended core photonic crystal fibers and generation of dual radiation Roy S. By Odyssey of Light in Nonlinear Optical Fibers: Theory and Applications 13.1-13.6 (2017)
• Dynamics of Dissipative Solitons in Active Silicon Waveguides Roy S. By Advances in Optical Science and Engineering 141-144 (2017)
Journal
• Collision dynamics of a discrete soliton in uniform waveguide arrays Lara A. P., Roy S. By Journal of the Optical Society of America B 40 594-603 (2023)
• Collision dynamics of a discrete soliton in uniform waveguide arrays Lara A.P., Roy S. By Journal of the Optical Society of America B: Optical Physics 40 594-603 (2023)
• Spatial Dissipative Solitons in Graphene-Based Active Random Metamaterials Paul A., Marini A. , Roy S. By Phys. Rev. Applied 17 044036- (2022)
• Spatial Dissipative Solitons in Graphene-Based Active Random Metamaterials Paul A., Marini A., Roy S. By Physical Review Applied 17 - (2022)
• Intracavity field dynamics near avoided mode crossing in a concentric silicon-nitride ring resonator Saha M., Roy S., Varshney S.K. By Physical Review A 104 - (2021)
• Intracavity field dynamics near avoided mode crossing in a concentric silicon-nitride ring resonator Saha M., Roy S. , Varshney S. K. By Phys Rev A 104 033514- (2021)
• Free-carrier-induced nonlinear dynamics in hybrid graphene-based photonic waveguides Sahoo A., Marini A. , Roy S. By PHYSICAL REVIEW A 104 063501- (2021)
• Free-carrier-induced nonlinear dynamics in hybrid graphene-based photonic waveguides Sahoo A., Marini A., Roy S. By Physical Review A 104 - (2021)
• Dynamic diffractive resonant radiation in a linearly chirped nonlinear waveguide array Lara A.P., Roy S. By Physical Review A 102 033512- (2020)
• Dynamics and selective temporal focusing of a time truncated Airy pulse in varying dispersive media Banerjee A., Roy S. By Journal of the Optical Society of America B: Optical Physics 37 3819-3828 (2020)
• Polarization dynamics of a vector cavity soliton in a birefringent fiber resonator Saha M., Roy S. , Varshney S. K. By PHYSICAL REVIEW A 101 033826- (2020)
• Polarization dynamics of a vector cavity soliton in a birefringent fiber resonator Saha M., Roy S., Varshney S.K. By Physical Review A 101 - (2020)
• Manipulation of infrared dispersive waves in customized microstructured optical fibers for 1.7 and 2.0 µm light sources Bose S., Harshavardhan Reddy P., Fan J., Demircan A., Ruehl A., Morgner U., Roy S., Pal M., Bhadra S.K., Ghosh D. By Applied Optics 59 9015-9022 (2020)
• Variational approach to study soliton dynamics in a passive fiber loop resonator with coherently driven phase-modulated external field Saha M., Roy S. , Varshney S. K. By PHYSICAL REVIEW E 100 022201-022201 (2019)
• Variational approach to study soliton dynamics in a passive fiber loop resonator with coherently driven phase-modulated external field Saha M., Roy S., Varshney S.K. By Physical Review E 100 - (2019)
• Variational approach to study soliton dynamics in a pssive fiber loop resonator with coherently driven phase-modulated external field Saha M., Roy S. , Varshney S. K. By Phy. Rev. E 100 022201- (2019)
• Stability and variational analysis of cavity solitons under various perturbations Roy S., Sahoo A. By PHYSICAL REVIEW A 100 053814- (2019)
• Stability and variational analysis of cavity solitons under various perturbations Sahoo A., Roy S. By Physical Review A 100 - (2019)
• Dynamics of dissipative solitons near zero-nonlinearity frequency under higher order perturbations Sahoo A., Roy S. By Journal of the Optical Society of America B: Optical Physics 36 2352-2359 (2019)
• Dynamics of dissipative solitons near zero-nonlinearity frequency under higher order perturbations Roy S., Sahoo A. By JOSA B 36 2352-2359 (2019)
• Heat-induced soliton self-frequency redshift in the ultrafast nonlinear dynamics of active plasmonic waveguides Sahoo A., Marini A., Roy S. By Physical Review A 100 - (2019)
• Heat-induced soliton self-frequency redshift in the ultrafast nonlinear dynamics of active plasmonic waveguides Roy S., Sahoo A. , Marini A. By PHYSICAL REVIEW A 100 013848-013848 (2019)
• Trajectory manipulation of an Airy pulse near zero-dispersion wavelength under a free-carrier-generated linear potential Banerjee A., Roy S. By Physical Review A 100 - (2019)
• Trajectory manipulation of an Airy pulse near zero-dispersion wavelength under a free-carrier-generated linear potential Roy S., Banerjee A. By PHYSICAL REVIEW A 100 053816- (2019)
• Self-healing dynamics and absolute temporal focusing of a truncated Airy pulse under higher-order phase modulations Banerjee A., Roy S. By JOSA B 35 878-885 (2018)
• Collision-mediated radiation due to Airy-soliton interaction in a nonlinear Kerr medium Roy S., Banerjee A. By PHYSICAL REVIEW A 98 033806--0338069 (2018)
• Dissipative soliton mediated radiations in active silicon-based waveguides Roy S., Sahoo A. By Journal of Optical Society of America B 35 257-265 (2018)
• Dissipative soliton mediated radiations in active silicon-based waveguides Sahoo A., Roy S. By Journal of the Optical Society of America B: Optical Physics 35 257-265 (2018)
• Perturbed dissipative solitons: A variational approach Sahoo A., Roy S. , Agrawal G. P. By Phys. Rev. A 96 013838- (2017)
• Implications of a zero-nonlinearity wavelength in photonic crystal fibers doped with silver nanoparticles Bose S., Sahoo A. , Chattopadhyay R. , Roy S. , Bhadra S. K., Agrawal G. P. By Phys. Rev. A 94 043835- (2016)
• Study of nonlinear dynamics in silvernanoparticle- doped photonic crystal fiber SURAJIT BOSE, RIK CHATTOPADHYAY SAMUDRA ROY, AND SHYAMAL K. BHADRA By Journal of optical society of America B 33 - (2016)
• Experimental and theoretical study of red-shifted solitonic resonant radiation in photonic crystal fibers and generation of radiation seeded Raman soliton S. Bose, S. Roy, R. Chattopadhyay, M. pal and S.K Bhadra By Journal of Optics (IOP) 17 - (2015)
• Design and fabrication of microstructured optical fibers with optimized core suspension for enhanced supercontinuum generation D. Ghosh, S. Bose, S. Roy and S.K Bhadra By Journal of Lightwave Technology (IEEE) 33 - (2015)
• Loss-compensated nonlinear modes and symmetry breaking in amplifying metal dielectric-metal plasmonic couplers A. Marini, S. Roy, A. Kumar and F. Biancalana By Physical Review A 91 - (2015)
• Free-carrier-driven spatiotemporal dynamics in amplifying silicon waveguides Roy S., Marini A. , Biancalana F. By Phys Rev A 89 0538- (2014)
• Optical analog of spontaneous symmetry breaking induced by tachyon condensation in amplifying plasmonic arrays A. Marini, T. Tran, S. Roy, S. Longhi and F. Biancalana By Physical Review A 89 - (2014)
• Efficient Supercontinuum Sources Based on Suspended Core Microstructured Fibers D. Ghosh, S. Roy and S.K Bhadra By Journal of special topics in quantum electronics (IEEE) 20 - (2014)
• Self-frequency blue-shift of dissipative solitons in silicon based waveguides Samudra Roy, Andrea Marini and Fabio Biancalana By Physical Review A 87 - (2013)
• Formation of quartic solitons and localized continuum in silicon-based slot waveguides Samudra Roy and Fabio Biancalana By Physical Review A 87 - (2013)
• High-energy, shock-front-assisted resonant radiation in the normal dispersion regime T. Roger, M. F. Saleh, S. Roy, F. Biancalana, C. Li, and D. Faccio By Physical Review A 88 - (2013)
• Strong infra-red radiation through passive dispersive wave generation and its control Samudra Roy, Debashri Ghosh, S.K. Bhadra, Kunimasa Saitoh and Masanori Koshiba By Applied Optics 50 - (2011)
• Dispersive wave generation in supercontinuum process inside nonlinear microstructured fiber (Review Article) Samudra Roy, S. K. Bhadra, Govind P. Agrawal By Current Science 100 - (2011)
• Dynamics of Raman soliton during supercontinuum generation near the zero-dispersion wavelength of optical fiber Samudra Roy, S.K. Bhadra, Kunimasa Saitoh, Masanori Koshiba and G.P. Agrawal By Optics Express 19 - (2011)
• Blue-extended sub-nanosecond supercontinuum generation in simply designed nonlinear microstructured optical fiber D. Ghosh, S. Roy, M. Pal, P. Leproux, P. Viale, V.Tombelaine ,S. K. Bhadra By Journal of Lightwave Technology (IEEE) 29 - (2011)
• Role of dispersion profile in controlling emission of dispersive waves by soliton in supercontinuum generation Samudra Roy, Debashri Ghosh, S. K. Bhadra, Govind P. Agrawal By Optics Communication 283 - (2010)
• Determination of modal effective indices and dispersion of microstructured fibers with different configuration: A variational approach D. Ghosh, S. Roy, M. Pal, S. K. Bhadra By Journal of Modern Optics 57 - (2010)
• Supercontinuum generation in micro-structured silica optical fibers: Formation of artificial white light (Review article) Samudra Roy, Debashri Ghosh and S. K. Bhadra By Ceramic Transactions 69 - (2010)
• Supercontinuum generation in nonlinear microstructured fiber and recent advances (Invited Article) D. Ghosh, S. Roy, M. Pal and S.K. Bhadra By International Journal of Microwave and Optical Technology 5 - (2010)
• Modeling of microstructured non-zero dispersion shifted optical fiber with ultra-low dispersion slope D.Ghosh, S. Roy, M.Pal, S. Bandyopadhyay and S.K. Bhadra By Journal of optical society of America B 26 - (2009)
• Dispersive waves emitted by solitons perturbed by third-order dispersion inside optical fiber Samudra Roy, S. K. Bhadra, Govind P. Agrawal By Physical Review A 79 - (2009)
• Effect of higher-order dispersion on resonant dispersive waves emitted by solitons Samudra Roy, S. K. Bhadra, Govind P. Agrawal By Optics Letters 34 - (2009)
• Perturbation of higher-order solitons by fourth-order dispersion in optical fibers Samudra Roy, S. K. Bhadra, Govind P. Agrawal By Optics Communications 282 - (2009)
• Raman amplification of optical pulses in silicon waveguides: Effects of finite gain bandwidth, pulse width and chirp Samudra Roy, S.K. Bhadra and Govind P. Agrawal By Journal of optical society of America B 26 - (2009)
• Generation of supercontinuum and its theoretical study in three-ring silica microstructured optical fiber D. Ghosh, S. Roy, M. Pal, A. Pal, S. K. Bhadra, J. McCarthy, H. Bookey and A. Kar By Applied Optics 48 - (2009)
• Raman scattering for spatiotemporal soliton in a cylindrical optical fiber M. Ballav, A. Roy Chowdhury, S. Roy & S. K. Bhadra By Nonlinear Optics and Quantum Optics 38 - (2008)
• Effect of two photon absorption on nonlinear pulse propagation in gain medium Samudra Roy & Shyamal K. Bhadra By Communications in Nonlinear Science and Numerical Simulation 13 - (2008)
• Solving soliton perturbation problems by introducing Rayleighs dissipation function Samudra Roy & Shyamal K. Bhadra By Journal of Lightwave Technology (IEEE) 26 - (2008)
• Femtosecond pulse propagation in silicon waveguides: Variational approach and its advantages Samudra Roy, S.K. Bhadra and Govind P. Agrawal By Optics Communications 281 - (2008)
• Index-guided photonics crystal fibers: Study of fiber drawing parameters D.Ghosh, S.Roy, M.Pal, A.Pal, S.K.Bhadra By Journal of Optics 37 - (2008)
• Study of nonlinear dissipative pulse propagation under the combined effect of two-photon absorption and gain dispersion: A variational approach involving Rayleighs dissipation function Samudra Roy & Shyamal K. Bhadra By Physica D - Nonlinear Phenomena 232 - (2007)
• Study of pulse evolution and optical bistability under influence of cubic-quintic nonlinearity and third order dispersion Samudra Roy & Shyamal K. Bhadra By Journal of Nonlinear Optical Physics & Materials 16 - (2007)
Educational Package
• Physics of linear and nonlinear optical waveguides Roy S. By - (2020)
• Nonlinear Optics Roy S. By - (2018)

Principal Investigator

• Study of novel nonlinear phenomena in silicon based nano - structured waveguides
• Study of Phased Matched Solitonic Resonant Radiation in Silicon Based Waveguides for IR Laser Applications