Dr. Varghese Antony Thomas

Varghese Antony Thomas
Research Associate I
The Georgia Electronic Design Center
Georgia Institute of Technology
Email: vthomas37@gatech.edu

Research Areas of Interest

  • Long haul optical communication: 400 GB/s per carrier transmission with high spectral efficiency.
  • Short reach optical communication: High speed Multi Mode Fiber Links employing  four level Pulse Amplitude Modulation (PAM 4)
  • Simulation capability development: End-to-End VCSEL Multi-Mode Fiber (MMF) Link Modeling and Simulation for High-Speed Digital Systems
  • Optical Wireless Integration: Blind optical Orthogonal Frequency Division Multiplexing (OFDM) detection


Dr. Varghese Antony Thomas is a research engineer at Terabit Optical Networking Lab at Georgia Institute of Technology. He has an interdisciplinary background in optical and wireless communication. He received his PhD degree from University of Southampton in 2015. As a PhD student, he worked in the wireless communications research group of University of Southampton, where he designed radio over fiber architectures for several applications. He received an MSc (Distinction) degree in Wireless Communications from the University of Southampton, UK in 2011. Prior to that he obtained his BE (Honors) degree in Electrical and Electronics Engineering from Birla Institute of Technology and Science, Pilani (Goa Campus) in 2010. He is a recipient of the several academic awards, including the Commonwealth Scholarship of the Government of UK, Mayflower Scholarship of University of Southampton, Summer Research Fellowship of the Indian Academy of Sciences and undergraduate academic scholarships. His research interests lie mainly in optical communications, optical-wireless integration, and optical backhaul for MIMO and radio over fiber systems.

Research Statement

High speed long haul optical backhauls are critical to supporting the increased internet traffic expected in a world that is moving towards “Internet of things”. On the other hand, short reach optical communication is critical for in-building communication, especially in data centers like those of Google, Facebook etc, where low cost as well as low latency are critical design parameters. Short reach optical communication is moving towards employing PAM 4 optical modulation.  Hence, we have experimental testbeds at the terabit optical networking lab that employ PAM 4 modulation. He is also involved in development of simulation capabilities of MMF optical links, because this is critical to designing links that are optimized for each deployment scenario.  The wireless world is increasingly looking towards the optical community for enhancing the data rates that it can support. Hence, Antony is also involved in beneficially employing his interdisciplinary background for developing blind optical OFDM detection techniques.