Abstract: Silicon photonics was truly recognized as a disruptive technology right at the beginning of this millennium (21^st century). In course of time, it has found wide-spread applications in the area of high-speed optical interconnects technology, microwave photonics, lab-on-chip sensing, and quantum information processing solutions. The triumph of silicon photonics technology has been possible because of the advancement of silicon CMOS technology nodes along with a little add-on, for the co-integration of electronics and photonics devices. Besides hybrid integrations of III-V laser sources/detectors, waveguide-based devices like directional coupler, microring resonator and Mach-Zehnder interferometer are commonly used to achieve almost all other passive and active functions. In this lecture, I’ll discuss first about how the electrical interconnect bottleneck in IC technology compelled semiconductor industries to re-invent integrated optics or photonics integrated circuit technology during the last two decades of the last millennium. This will be then followed by an overview on latest state-of-the-art integrated silicon photonics technology leading towards successful products for high-speed optical interconnects and many other attractive applications. Thereafter, I will be discussing some novel silicon photonics devices/circuits recently demonstrated at IIT Madras and elsewhere in India.

Speaker’s Bio: Bijoy Krishna Das obtained his master degree in solid state physics from Vidyasagar University, Midnapore, India (in 1996) and PhD degree (Dr.rer.nat) in integrated optics from University of Paderborn, Germany (in April 2003).  Prior to his PhD research in Germany, Dr. Das started his research career in the area of integrated optics at the Microelectronics Centre, IIT Kharagpur for three years (January 1996 – December 1998). His postdoctoral research carried out in three different countries First, he was an FRC Postdoctoral Fellow in the Graduate School of Engineering, Osaka University, Osaka, Japan (2004-2005). Later, he joined as a postdoctoral researcher in the Center for Optical Technologies, Lehigh University, Bethlehem, PA, USA. In April 2005, he rejoined the Integrated Optics Group in University of Paderborn as Wissenschaftlicher Mitarbeiter and continued his research on integrated nonlinear optical devices. He also worked for a while at Laboratoire Aime Cotton, CNRS, Orsay, France. Since August 2006, Dr. Das has been associated with the Dept. of Electrical Engineering, IIT Madras, where he is presently holding a full Professor position. He is also heading the Centre for Programmable Photonic Integrated Circuits and Systems (CPPICS), funded by the MeitY, Govt. of India.

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