Optical tristability using a twin-stripe laser diode

Watanabe, Masanobu; Itoh, Hideo; Mukai, Seiji; Yajima, Hiroyoshi
February 1987
Applied Physics Letters;2/23/1987, Vol. 50 Issue 8, p427
Academic Journal
Optical tristability is demonstrated with a positive feedback circuit composed of a twin-stripe laser diode, a p-i-n photodiode, and a transistor. A novel nonlinearity in the current/light characteristics of the twin-stripe laser diode is the key point in realizing the tristability. By changing the circuit parameters, optical bistability and differential gain characteristics can also be performed.


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