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An All-optical Proteretic Switch Using Semiconductor Ring Lasers

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Document pages: 8 pages

Abstract: Proteresis, a complementary effect to well-known hysteresis, is aninteresting phenomenon to be explored. As we know, the hysteric device is abistable switch whose states depend on the system s history whereas theproteretic device states depend on the future. Though an all-opticalimplementation of the hysteric device has been demonstrated but itscomplementary behavior has yet to be contrived. Therefore, this work presentsthe design and development of an all-optical proteretic system usingsemiconductor ring lasers. The design was achieved by providing a constraintfeedforward path to a hysteric feedback system. Additionally, the role ofvarious parameters was studied in order to achieve proteresis. It is observedthat the proteretic effect can be achieved only for specific conditionsotherwise the system behaves as a traditional hysteric device. The experimentalresults match well with the theoretical Simulink results.

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