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Opt Lett. 1994 Feb 15;19(4):269-71.

Optical bistability in asymmetric Fabry-Perot laser-diode amplifiers.


We present what is to our knowledge the first study of optical bistability in Fabry-Perot laser-diode amplifiers that have asymmetric facet reflectivities. When operated in reflection, the light input-light output characteristics exhibit a transition from counterclockwise to clockwise hysteresis by way of an X-shaped or butterfly hysteresis. This transition can be achieved by a change in either the device bias or the phase detuning of the incident light. Our results are in good agreement with calculation.

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