Fall meeting November 1, 2019

Join us in welcoming Alan Wang from the School of Electrical Engineering and Computer Science at Oregon State University to give a talk entitled:

Silicon Photonic Devices Driven by Transparent Conductive Oxides

Transparent conductive oxide (TCO) materials have attracted escalating research interests for integrated photonic devices in recent years due to the extraordinary perturbation to the refractive indices achieved either through oxygen vacancy doping or electrical gating. In addition, TCO materials can be deposited with high quality using DC- or RF-sputtering on various platforms including silicon photonics, which also possess long term stability. Therefore, TCO materials are fully compatible with silicon photonics and has the potential to be readily integrated with existing silicon photonic integrated circuits (PICs). In this talk, I will review recent research progress in my group for the development of TCO-gated silicon photonic devices, including energy-efficiency silicon-TCO photonic crystal nanocavity modulators, silicon-TCO microring resonators with ultra-large E-O tuning efficiency, and broadband plasmonic-TCO electro absorption modulators. We also achieved 5Gbit/s E-O modulation speed and will also discuss the strategy to further improve the energy efficiency to atto-joule/bit and operation bandwidth above 25 GHz.

Dr. Wang’s bio and abstract is also available here.

Pacific Northwest Optics Workshop-2019

The fourth annual Pacific Northwest Optics Workshop (PNOW) will be held at Oregon Institute of Technology (Wilsonville Campus) on May 4, 2019.

This free workshop is supported by the Optical Society of America (OSA) Columbia Section with cooperation from the OSA Oregon State University, University of Oregon, and Pacific University student chapters. This workshop aims to explore industry and academic efforts in optics in Oregon and Washington. It is a great opportunity for networking within this community! We invite you to forward the details and this announcement to your colleagues! Registration is free and open to the optics community.


Spring meeting April 19, 2019

Join us in welcoming Brian Smith from Oregon Center for Optical, Molecular, and Quantum Science, University of Oregon to give a talk entitled:

Control and measurement of single-photon pulses

The ability to manipulate the spectral-temporal waveform of optical pulses in the classical domain has enabled a wide range of applications from ultrafast spectroscopy to high-speed communications. Extending these concepts to quantum light has the potential to enable breakthroughs in optical quantum science and technology. However, filtering and amplifying often employed in classical pulse shaping techniques are incompatible with non-classical light. Controlling and efficiently measuring the pulsed mode structure of quantum light requires efficient means to achieve deterministic, unitary manipulation that preserves fragile quantum coherences. Here an approach to deterministically modify the pulse-mode structure of quantum states of light within an integrated optical platform is presented. The method is based upon application of both spectral and temporal phase modulation to the wave packet. These techniques lay the ground for future quantum wavelength- and timedivision multiplexing applications and facilitate interfacing of different physical platforms where quantum information can be stored and manipulated.

Read Dr. Smith’s Bio here