Integrated Optoelectronics Group  with Mr. Benjamin Lionel, Director of IRDE Deharadun (4th from right) - 10th October 2016

 IEEE Journal of  Selected Topics in Quantum Electronics, Vol. 23, NO. 2, March /April 2017. DOI: 10.1109/JSTQE.2016.2596259



   © 2016, IOLAB IIT Madras              

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Silicon Photonics @ IIT Madras

Since its inception in January 2007, the Integrated Optoelectronics Group has been actively engaged in novel design, fabrication and characterizations of integrated silicon photonic devices and circuits for communications, high performance computations and sensing applications.

The group is now equipped with micro/nano fabrication facilities (Centre for NEMS and Nanophotonics) and device characterization facilities (Integrated Optoelectronics Lab).

We are looking for bright and motivated PhD candidates for pursuing research in following topics:

(1) Silicon Photonics Devices for Quantum Computation and Communications;

(2) Silicon Photonics Devices for RF Signal Processing;

(3) Silicon Photonics Lab-On-Chip for Bio-Sensing;

Interested candidates with M.Tech/MS Degree in ECE/EE/Applied Physics  backgrounds may directly contact Prof. Bijoy Krishna Das (E-Mail:

Available PhD Positions




“Integrated Optical Edge Filter using Apodized Sub-Wavelength Grating Waveguide in SOI", Poster Presentation by Sumi R, ECIO - 2018, Valencia, Spain, 30th May-1st June, 2018

“Wideband MZI based Thermo-Optic Switch with Slab Integrated Microheater in SOI ", Poster Presentation by Ramesh K, CLEO Pacific Rim Conference- 2018, Hong Kong, 29th July-3rd  August, 2018


Elected Executive Council Member of OSI: Dr. B.K. Das has been elected as a <read more>

Second best oral presentation award in ICAOP- 2017: Our PhD research scholar Parimal Sah <read more>

Best oral presentation award in PHOTONICS - 2016: Our PhD research scholar Sumi R <read more>


Broadband wavelength filter device using a sidewall grating in multimode SOI rib waveguide

Parimal Sah and Bijoy Krishna Das

OFC 2017, Los Angeles, CA, USA ,19-23 March 2017 (Oral )

Integrated optical Mach-Zehnder interoferometer with  a sensing arm of sub-wavelength grating waveguide in SOI

Sumi R, N. Dasgupta and Bijoy Krishna Das,

IEEE Sensors, Glasgow, Scotland, UK, 29th Oct-1st Nov, 2017 (Poster)

Diffusion doped p-I-n/p-n diodes for scalable silicon photonics devices

Ridhhi Nandi, Sreevasta Kurudi and Bijoy Krishna Das

SPIE Microtechnologies, Barcelona, Spain, 8-10 May 2017 (Poster)

Novel wavelength filter devices in SOI for optical interconnect applications

B.K. Das, R.K. Gupta, P. Sah, and S. Chandran

ICMAT-2017, Suntec Singapore , 18-23 June,2017 (Invited)

Integrated Optical Ultra-Broadband Add-Drop Filter in Silicon-On-Insulator Platform

Sumi R, R.K. Gupta, N. Dasgupta and Bijoy Krishna Das

OFC 2018, San Diego, USA, 11th -15th  March 2018 (Oral)

Diffusion doped p-i-n/p-n diodes for scalable silicon photonics devices

Riddhi Nandi, Sreevatsa Kurudi and Bijoy Krishna Das

Proc. SPIE 10249, Integrated Photonics: Materials, Devices, and Applications IV, 102490Q (May 30, 2017)

Wavelength independent directional couplers for integrated silicon photonics

R. K Gupta, S. Chandran,  and B. K. Das

IEEE/OSA Journal of Lightwave Technology, Vol. 35, No. 22, pp. 4916-4923, November 15, 2017.

Design and fabrication of surface trimmed silicon-on-insulator waveguide with adiabatic spot-size converters

Sujith Chandran, Meenatchi Sundaram, Sreevatsa Kurudi and Bijoy Krishna Das

Applied Optics, Vol. 56, No. 6, pp. 1708-1716, 2017.

Dispersion enhanced critically coupled ring resonator for wide range refractive index  sensing  

S. Chandran, R. K Gupta and B. K. Das

CSI Transactions on ICT, Vol. 5, No. 2, pp. 189-193, June 2017.

Multi-input and multi-output SOI (MIMO-SOI) platform for silicon photonics

Ramesh K. Gupta and Bijoy K. Das.

IEEE Journal of Selected Topics in Quantum Electronics, Vol. 23, No. 2, Art. No. 8200109, March/April 2017.

Photonic bandpass filter characteristics of multimode SOI waveguides integrated with submicron gratings

Parimal Shah and Bijoy Krishna Das

R. K Gupta, S. Chandran,  and B. K. Das

Applied Optics, Vol. 57, No. 9, pp. 2277-2281, 2018.

Ultra-Broadband Add-Drop Filter/Switch Circuit using Sub-Wavelength Grating Waveguides

Sumi R, Ramesh K. Gupta, Nandita DasGupta and Bijoy Krishna Das

R. K Gupta, S. Chandran,  and B. K. Das

IEEE Journal of Selected Topics in Quantum Electronics, Vol. 25, Issue 3,  MAY/JUNE 2019.


Department of Electrical Engineering, IIT Madras, Chennai-600036, India