J.SARMA
Dr. J.SARMA received his Bachelor’s degree in Electronics and Telecommunications
Engineering from the University of Jadavpur, Calcutta (India). He then
spent about a year as Trainee Engineer on a computer development joint
project between Jadavpur University & Indian Statistical Institute
(Calcutta). He obtained his M.S. Electrical Engineering degree from Illinois
Institute of Technoology, Chicago (USA) while doing part-time work on
Spark-Chambers for nuclear particle detection at the Fermi Research Laboratories
of the University of Chicago. He then went on to complete some post-graduate
courses in ElectroPhysics at the Polytechnic Institute of Brooklyn, New
York, and in Electrical Engineering and Physics at Columbia University,
New York (USA). While at Columbia University he worked on topics of plasma
physics in the Interdepartmental Plasma Physics Research Group. His research
studies continued as a post-graduate research student in the Department
of Electronic and Electrical Engineering, University of Leeds, Leeds (UK)
from where he obtained his Ph.D. degree for his research on [Negative
Differential Mobility (NDM) ] Gunn diodes. Dr. Sarma then moved to the
Communications Research Centre in Ottawa as a National Research Council
of Canada Post-Doctoral Research Fellow and worked on travelling wave
NDM semiconductor microwave amplifiers and on microwave metal/semiconductor
field-effect transistors (FETs). Thereafter he returned to the UK as a
Research Associate in the Department of Electronic and Electrical Engineering
at the University of Sheffield.to work on the Transmission Line Matrix
method for Time-Domain computation of electromagnetic field problems related
to high energy nuclear particle accelerators. While at Sheffield he was
also involved in modelling novel (coupled travelling wave) long-gate microwave
FETs for high power operation. His next move as Research Associate in
the Department of Electronic and Electrical Engineering, University of
Liverpool, Liverpool (UK) initiated his research activities in OptoElectronics
& Photonics, starting with work on semiconductor, optoelectronic devices,
on superluminescent light emitting diodes (SLEDs). Dr Sarma moved with
the research group to the Department of Electronic and Electrical Engineering,
University of Bath, Bath (UK). There he continued with theoretical and
experimental research on (semiconductor) optoelectronics & photonics
and developed an active research group. Over the years the research at
Bath has contributed substantially to novel developments on various ‘passive
and active’ optical devices - for example: coupled waveguide analysis
and microwave simulation of optical waveguides; disc resonators and whispering-gallerymode
analysis; novel, efficient, SLEDs for very high power, low ripple output;
novel design and development of elements of spatial switching matrix;
time-domain analysis of weakly nonlinear pulse propagation in semiconductor
optical amplifiers; designs for reduction of longitudinal modes in Fabry-Perot(F-P)
Laser diodes; innovation, design and development of taper geometry high
power and high brightness Laser diode and Coherent Laser diode Array;
development of model to explain mode selection in Vertical Cavity Surface
Emitting Lasers(VCSELs); generalised, flexible VCSEL model for developing
functional elements; design and development of integrated LED/Laser and
surface acoustic wave (SAW) structures for developing acousto-optic based
functional devices; analysis of surface plasmon waves (SPWs) and associated
sensors; analysis methods for non-linear carrier diffusion; development
of quasi-analytic function expansion methods for analysing electromagnetic
propagation in non-uniform regions and in non-linear media. Dr. J.Sarma
has stayed at the University of Bath (UK) as a member of academic staff
(Reader) with research interest broadly categorised under Guided Wave
Optoelectronics and Photonics.
