Education
• Ph.D. Photonics Engineering, 2011, Ghent University-imec, Ghent, Belgium.
• M.S. Electrical Engineering, Microsystems and Microelectronics, 2005, University of Twente, Enschede, The Netherlands.
• M.Engg. Optical Communication, 2004, College of Engineering, Anna University, Chennai, India.
• B.Engg. Electronics and Communication Engineering, 2002, Bharathiar University, India.

Experience

• Professor, IISc Bangalore, Oct 2025-present.
• Associate Professor, IISc Bangalore, Nov 2019-Oct 2025.
• Asst. Professor, IISc, Bangalore, March 2014 – Oct 2019.
• Process Integration engineer-Silicon Photonics, IMEC, Belgium  April 2013 – Feb 2014.
• Post-doctoral Researcher, IMEC, Belgium April 2011 – April 2013.

Research Interests
• Photonic Integrated circuit on silicon, silicon nitride, lithium niobate, Lithium Tantalate, Metal-oxides
• Optical Interconnect for exascale computing
• Microwave Photonics
• Quantum Photonic integrated circuit
• Chip-scale Photonics for sensing applications
• Visible-to-Mid-IR photonic circuit platform

Research Area
Silicon Photonic Integrated Circuits, High-speed data communication, Photonics Radar, Optical Sensor, Photonic IC packaging, Optical interconnect, 2.5D and 3D photonics-electronics integration, quantum photonic integrated circuit for quantum computing and communication. 

Recent Publications

• V. Bhan, V. Jeyaselvan, and S. K. Selvaraja,  Silicon photonics enabled tunable multi-format multi-band linear frequency modulated waveform generation,'' IEEE Photonics Journal, vol. 18, no. 1, pp. 1--7, 2025. (DOI: https://10.1109/JPHOT.2025.3647136) 
• Shrrelakshmi K P, S. Raghavan, S. K. Selvaraja, ``High-efficiency grating fiber-chip couplers in wide bandgap III-nitride material platforms,''  Optical Materials Express, vol. 16, no. 1, pp. 103--114, 2026. (DOI: https://10.1364/OME.579392) 
• R. Kallega, R. Shekhawat, K. Ramesh, and S. K. Selvaraja, ``Controlled crystallization of thermal evaporated GST-on-SOI for photonic neuromorphic application,''  APL Materials, vol. 13, no. 5, 2025.(DOI: https://10.1063/5.0257237) 
• A. Nag, D. Rout, K. Sharma, P. Venkatachalam, S. K. Selvaraja, and J. K. Basu, ``Room temperature single-photon emission from quantum emitters coupled to a partially coherent metasurface,'' Advanced Optical Materials, (DOI: https://2026.10.1002/adom.202503434) 
• P. Rao, D. Rout, and S. K. Selvaraja, Suspended guided mode resonator in germanium for photothermal detection,'' Optics Continuum, vol. 5, no. 2, pp. 685--692, 2026. (DOI: https://10.1364/OPTCON.573650) 

Key Publications

• Chatterjee, A., & Selvaraja, S. K. (2022). On-chip silicon nano-slab photodetector integrated wavelength division de-multiplexer in the 850 nm band. Applied Optics, 61(6), 1403-1412.
  https://doi.org/10.1364/AO.450621
  

• Mere, V., Muthuganesan, H., Kar, Y., Van Kruijsdijk, C., & Selvaraja, S. K. (2020). On-chip chemical sensing using slot-waveguide-based ring resonator. IEEE Sensors Journal, 20(11), 5970-5975.https://ieeexplore.ieee.org/document/9000838

• Pandey, A., & Selvaraja, S. K. (2017). Tunable coupling-induced resonance splitting in a self-coupled silicon ring cavity with robust spectral characteristics. Optics letters, 42(14), 2854-2857.https://doi.org/10.1364/OL.42.002854

Patents
• P.Absil and S. Selvaraja, Methods for improving integrated photonic device uniformity, US Patent 20,130,023,067, EP Patent 2,549,224.

• S. Selvaraja, A method of coupling light into a photonic integrated circuit, EP application pending.