University of Cambridge > > Photonics Summer Seminars 2017 > Ultra-Low Loss Si3N4 Integration Platform for Passive and Active Components for Next Generation Photonic Integrated Circuits

Ultra-Low Loss Si3N4 Integration Platform for Passive and Active Components for Next Generation Photonic Integrated Circuits

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As we head towards ultra scale capacity networks and communications systems, the network architecture, system design and engineering, bandwidth and capacity scaling, power dissipation and form factor, and other scaling issues at the physical and higher layers will increasingly benefit from next generation photonics.

Progress towards the realization of a new class of ultra low-loss Si3N4 planar waveguide technologies will be described. This platform has yielded a wealth of active and passive building blocks with on-chip waveguide losses lower than 0.45dB/m and can be integrated with Silicon Photonics and InP. Important system scaling issues like bandwidth, form factor, power density, the power spreading problem and power management, system design, bandwidth management and manufacturability are addressed. The next generation ULLW platform opens up a wide array of functions and applications that require very low loss integrated optical circuits to perform equivalent functions at lower power consumption than purely electronic solutions and offer a complementary integration feature set to silicon photonics and InP PICs that addresses shortcomings of using these technologies alone. A wide range of passive and active components have been demonstrated including long delay and tunable delay lines, 3D photonic chip stacking, low kappa long gratings, ultra high extinction ratio tunable filters, erbium doped waveguide amplifiers, resonators, switches, vertical couplers and mode matchers and component applications including 1.55 and 1.31 um and narrow linewidth lasers, adaptive dispersion compensators and transversal optical filters, optical regenerators and optical signal processing. We will also talk briefly about next generation technology … what lies beyond Silicon Photonics and what advantages might exist further down the road.

Bio: Daniel J. Blumenthal is Professor of ECE at UCSB , Director of the Terabit Optical Ethernet Center and heads the Optical Communications and Photonics Networks (OCPN) group ( He co-Founded Packet Photonics and Calient Networks, holds 19 US patents and has over 400 publications in optical communications, optical packet switching, gyro sensors, InP/silicon-photonic integration, ultra low-loss waveguides and integration technology, nano-photonic devices and optical signal processing. He co-authored Tunable Laser Diodes and Related Optical Sources (IEEE–Wiley, 2005). Dr. Blumenthal holds a PhD from the University of Colorado Boulder. He is Fellow of the IEEE and OSA and is recipient of a Presidential Early Career for Scientists and Engineers (PECASE) award and National Science Foundation Young Investigator and Office of Naval Research Young Investigator Program awards. He served on the National Lambda Rail Board of Directors and held an elected Researcher Seat on the Internet-2 Architecture & Operations Advisory Council.

This talk is part of the Photonics Summer Seminars 2017 series.

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