High contrast, 1.3 μm optical AND gate with gain

Sharfin, W. F.; Dagenais, M.
June 1986
Applied Physics Letters;6/2/1986, Vol. 48 Issue 22, p1510
Academic Journal
A high contrast (5:1), 1.3 μm wavelength optical and gate is demonstrated using a bistable Fabry–Perot InGaAsP/InP laser amplifier with large gain. Using simple arguments, it is shown that, subject to realistic constraints, the maximum attainable contrast ratio in a bistable Fabry–Perot logic gate is about 10. Unlike bistable amplifiers, there is a significant trade-off between contrast and gain in passive devices.


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