S
Sonali Dasgupta
Researcher at University of Southampton
Publications - 27
Citations - 840
Sonali Dasgupta is an academic researcher from University of Southampton. The author has contributed to research in topics: Photonic-crystal fiber & Single-mode optical fiber. The author has an hindex of 11, co-authored 27 publications receiving 790 citations. Previous affiliations of Sonali Dasgupta include Indian Institute of Technology Delhi.
Papers
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Journal ArticleDOI
All-optical phase and amplitude regenerator for next-generation telecommunications systems
Radan Slavik,Francesca Parmigiani,Joseph Kakande,Carl Lundstrom,Martin Sjödin,Peter A. Andrekson,Ruwan Weerasuriya,Stylianos Sygletos,Andrew D. Ellis,Lars Gruner-Nielsen,Dan Jakobsen,Soren Herstrom,Richard Phelan,James O'Gorman,Adonis Bogris,Dimitris Syvridis,Sonali Dasgupta,Periklis Petropoulos,David J. Richardson +18 more
TL;DR: The development of the first practical ('black-box') all-optical regenerator capable of removing both phase and amplitude noise from binary phase-encoded optical communications signals is reported.
Proceedings ArticleDOI
A silica based highly nonlinear fibre with improved threshold for stimulated brillouin scattering
Lars Gruner-Nielsen,Sonali Dasgupta,Marc D. Mermelstein,Dan Jakobsen,Soren Herstrom,Martin E. V. Pedersen,Ee Leong Lim,Shaiful-ul Alam,Francesca Parmigiani,David J. Richardson,Bera Palsdottir +10 more
TL;DR: In this paper, a combination of Al-doping and straining of the fiber was used to achieve an improvement in figure of merit for SBS limited highly nonlinear fibres.
Proceedings ArticleDOI
All-optical phase regeneration of 40Gbit/s DPSK signals in a black-box phase sensitive amplifier
Francesca Parmigiani,Radan Slavik,Joseph Kakande,Carl Lundstrom,Martin Sjödin,Peter A. Andrekson,Ruwan Weerasuriya,Stylianos Sygletos,Andrew D. Ellis,Lars Gruner-Nielsen,Dan Jakobsen,Soren Herstrom,Richard Phelan,James O'Gorman,Adonis Bogris,Dimitris Syvridis,Sonali Dasgupta,Periklis Petropoulos,David J. Richardson +18 more
TL;DR: In this article, a black-box four-wave mixing based bitrate-flexible phase sensitive amplifier is presented. And they use it in the first demonstration of 40 Gbit/s DPSK phase regeneration.
Journal ArticleDOI
Modeling Brillouin Gain Spectrum of Solid and Microstructured Optical Fibers Using a Finite Element Method
Sonali Dasgupta,Francesco Poletti,Shenghao Liu,Periklis Petropoulos,David J. Richardson,Lars Gruner-Nielsen,Soren Herstrom +6 more
TL;DR: In this article, the authors report the first detailed implementation of a 2D finite element method (FEM) through a commercial FEM solver that can be universally applied to calculate the Brillouin gain characteristics of optical fibers with arbitrary refractive index profiles and material composition, including radially asymmetric and microstructured optical fibers (MOFs).
Proceedings ArticleDOI
Silica-based highly nonlinear fibers with a high SBS threshold
Lars Gruner-Nielsen,Soren Herstrom,Sonali Dasgupta,David J. Richardson,Dan Jakobsen,Carl Lundstrom,Peter A. Andrekson,Martin E. V. Pedersen,Bera Palsdottir +8 more
TL;DR: In this article, the suppression of stimulated Brillouin scattering in highly non linear fibers with both germanium-and aluminum-doped cores based on spooling the fiber with a linear strain gradient is compared and presented.