Directional Coupled Waveguide Photo Detector
UC San Diego researchers have developed a photo detector with robust performance across a wide range of optical power, eliminating the non-linearity when the detector enters its saturation mode. The invention provides a directional-coupler design that enables tailoring of the optical power distribution over an arrangement of absorbers in the waveguide. At the same time, the photo currents from the absorbers are collected and add in phase, even at high microwave frequencies. The material structure of the absorbers is optimized to facilitate carrier transport and thermal conduction. The end product is a high power, large bandwidth photo detector.
Patent Number: US8611709B2
Application Number: US2010991505A
Inventor: Chang, William S. C. | Yu, Paul K. L.
Priority Date: 12 May 2008
Priority Number: US8611709B2
Application Date: 31 Jan 2011
Publication Date: 17 Dec 2013
IPC Current: G02B000626 | G02B000642
US Class: 385028 | 385031
Assignee Applicant: The Regents of the University of California
Title: Coupled waveguide photo detector with non-uniform coupling coefficient
Usefulness: Coupled waveguide photo detector with non-uniform coupling coefficient
Summary: Coupled waveguide photo detector device e.g. directional variable gap coupler waveguide photo detector device, and multimode directional coupled waveguide photo detector device for solar panel, optoelectronic system, digital and analog fiber optic communication system, optical computing system.
Novelty: Coupled waveguide photo detector device for e.g. optoelectronic system, has transmission line collector by which currents collected add in phase as optical wave propagates in output waveguide
Environmental/Green Technology
Solar Cell
8611709
State Of Development This invention has a patent pending and is available for sponsored research and/or licensing. Tech ID/UC Case 19185/2008-212-0 Related Cases 2008-212-0
USA
