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Optical Engineering

Extremely Low Switching Energy Optical Bistable Devices
Author(s): Mario Dagenais; W. F. Sharfin
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Paper Abstract

An all-optical bistable device and an electro-optical bistable device, with performances approaching the fundamental statistical limits, are described. In the all-optical approach, the giant nonlinearities associated with bound excitons in CdS are exploited to demonstrate the lowest-switching-energy (< 4 pJ) all-optical bistable device. The device switches in less than 1 ns and fully recovers in less than 2 ns. These times are detector limited. A switching energy of less than 1 fJ is theoretically predicted for an optimized geometry. In the electro-optical approach, an InGaAsP/InP diode laser amplifier is used to demonstrate bistability with less than 6000 photons (< 8 X 10-16 J) incident on the device. The device switches in less than 1 ns and is cascadable since it has a gain of 100. It operates at room temperature and is compatible with diode laser sources.

Paper Details

Date Published: 1 February 1986
PDF: 6 pages
Opt. Eng. 25(2) 252219 doi: 10.1117/12.7973808
Published in: Optical Engineering Volume 25, Issue 2
Show Author Affiliations
Mario Dagenais, GTE Laboratories, Inc. (United States)
W. F. Sharfin, GTE Laboratories, Inc. (United States)

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