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Optical Data/Tele-Communications

With ever increasing demand for bandwidth, data-rates in optical fibre communication is scaling to keep-up with the demand. Over the years, data-rate evolution has occurred through enhancing the number of transmission channels, increased rates by faster data modulators and by complex modulation schemes. Data capacity is increasing by an order of magnitude every four years. The components in the communication system have so far relied upon bulk components. However, continued scaling in this path is unsustainable. Power consumption, footprint and system complexity are the major hindrances in using bulk components. The anticipated way forward to sustain this capacity scaling is through development of integrated photonic technologies for next-generation optical communications. The need for an integrated photonic technology is also driven from high-performance microprocessors, where the copper interconnects are reaching their bandwidth limits. The challenge here is to miniaturize 1000’s of square kilometre optical fiber network on a few square millimetre chip with individual devices scaled to few micrometres. Furthermore, the technology has to be CMOS (Complementary Metal Oxide Semiconductor) compatible with for commercial viability. This line of research is being pursued in the groups of Prof. Shankar K. Selvaraja and Prof. Supradeepa V R.

Associate Professor
Associate Professor