IITKGP

Physics

Faculty

Partha Roy Chaudhuri, IIT Kharagpur

Partha Roy Chaudhuri

Professor

Physics

+91-3222-283842

roycp@phy.iitkgp.ac.in

Awards and Accolades

Personal Webpage Bio Sketch

Research Areas

  • Photonics: metamaterials and topology
  • Plasmonic Directional Coupler Devices
  • Fiber & Integrated Optics, Photonics
  • Experimental Bio-Photonics, Imaging
  • Optical Fiber Sensors and Devices
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.
All Publications
  • Bias-controlled mechanically tunable THz third harmonic generation in graphene based complementary split ring resonator metasurfaces by Roy Chaudhuri P., Sahu M. Journal of Optics, Springer Nature - (2026)
  • Nonlinear evolution of distinct pulse shapes in optical fibers and their temporal interference dynamics by Roy A., Roy Chaudhuri P. Journal of Electromagnetic Waves and Applications, JEWA - (2026)
  • Temporal interference engineering in the nonlinear evolution of triangular optical pulses by Roy A., Roy Chaudhuri P. Optical and Quantum Electronics, Springer Nature 58 - (2026)
  • Electromechanically tunable third-harmonic generation at THz frequencies using nonlinear graphene metasurface by Sahu M., Roy Chaudhuri P. Applied Physics B: Lasers and Optics 132 - (2026)
  • Experimental determination of Young s modulus of fiber material and viscosity of liquid using fiber-optic cantilever vibration probe by Mondal S., Roy Chaudhuri P. Journal of Optics, Springer Nature - (2025)
Completed Projects
  • Co-Principal Investigator
Alumni members

Ph. D. Students

Abhisek Roy

Area of Research: Experimental Photonics

Asish Panda

Area of Research: Quantum Photonics

Mitali Sahu

Area of Research: Optics and photonics

Saikat Mondal

Area of Research: Experimental Photonics

Saptadeep Chatterjee

Area of Research: Quantum Photonics