Pulse Generator for All-Optical Neurons

Period of Performance: 07/30/1998 - 10/05/1999


Phase 1 STTR

Recipient Firm

Santa Barbara Photonics
5276 Hollister Ave, Suite 305
Santa Barbara, CA 93111
Principal Investigator
Firm POC

Research Institution

University of California, Santa Barbara
Office of Research
Santa Barbara, CA 93106
Institution POC


An optical pulse generator based on photorefractive effect and optical bistability is proposed for applications in all-0ptical pulse coupled neural networks. The novel device employs the dynamic memory function of photorefractive crystal and the regenerative pulsation property of optical bistable devices (OBDs). It consists of a photorefractive crystal, and OBD and an optical feedback loop. It takes the advantage of the high sensitivity of photorefractive devices, and the high response speed of optical bistable devices. In the Phase I stage, the main effort will be concentrated on visible-band neurons using ferroelectric oxide crystals and nonlinear interference filters (NLIFs). In a possible Phase II program, device integration and interconnection will be investigated and prototyped.