Our research aims at developing Optical Fiber Components, Photonics Circuits and Devices for applications in communication and sensors. My PhD research led to the technology development of fabrication and modelling of all-fiber 2x2 coupler based branching components, e.g., splitters, WDM/DWDMs, WFC, loop-mirror reflector, wavelength interleaver. In the later stage, a major focus paid to developing FD based field-convergence algorithm to analyse propagation characteristics in arbitrary and complex RI-profile waveguides and fibers. Some of the research works accomplished in the recent past involved designing all-fiber nonlinear and active devices, namely, doped fiber amplifiers, lasers and supercontinuum sources in visible and mid-IR regions using microstructure fibers, PCFs, binary multi-clad fibers as the host of the devices. Our recent research involves experimental demonstration and analytical modelling of light propagation in few mode fibers, namely vector beam generation, analysis of polarisation propagation in few-mode assisted sagnac, stress measurement, coated few-layer few-mode fibers for humidity measurement. We recently demonstrated experimentally a unique concept of fiber-cantilever beam deflection magnetometer for measurement of very low (~1 mT) magnetic field. Anisotropic and differential interference imaging are also ongoing research in our optical waveguide & photonics labs.
Advances in Optical Science and Engineering by Roy Chaudhuri P., Prodhan S. All-Optical Fiber-Cantilever Beam-Deflection Magnetometer: Detection of Low Magnetic Field and Magnetization Measurement 47-54 (2017)
Control of evanescent field using a dynamic waveguide composed of gelatin coated few-layer fiber by Chatterjee S. K., Roy Chaudhuri P. Applied Optics 55 4985-4994 (2016)
Immobilization of fluorescent whole cell biosensors for the improved detection of heavy metal pollutants present in aquatic environment by Asif S., Chaudhary A. , P. G. , Roy Chaudhuri P. , Sen R. Materials Today: Proceedings3 3 3492-3497 (2016)
Multi-order Dispersion Engineering in Binary Multi-clad Microstructured Fiber towards designing nonlinear devices by S., Roy Chaudhuri P. Optical and Quantum Electronics 48 1-20 (2016)
Reconstruction of elongated bubbles fusing the information from multiple optical probes through a Bayesian Inference Technique by Chakraborty S., Roy Chaudhuri P. , Das P. K. Review of Scientific Instruments 87 075109-10 (2016)
Selective excitation of higher order modes in etched gelatin coated few-mode fiber and demonstration of high humidity measurement by Khan S. N., Roy Chaudhuri P. Journal of Optical Society of America A 34 122-132 (2017)
Ultra High Efficiency CMOS Compatible Si Ge Single Nanowire Photodetectors in Infrared and THz Wavelengths for Defence and Security Applications (Project ID: 5318) MHRD