Guided Wave Optical Power Regulator

David A. Smith

doi:10.1117/12.937189

10 March 1987 Guided Wave Optical Power Regulator

David A. Smith

Proceedings Volume 0704, Integrated Optical Circuit Engineering IV; (1987) https://doi.org/10.1117/12.937189
Event: Cambridge Symposium-Fiber/LASE '86, 1986, Cambridge, MA, United States

Abstract

An integrated optic device is described which acts as the optical analog of a voltage regulator or, more precisely, a tunable voltage source. This device is suitable for stabilizing a fluctuating optical intensity or for providing a tunable power source with immunity to input power variations. An incoming optical signal is beamsplit by a tunable directional coupler (the control element), the output channel of which is further sampled by an additional coupler (the monitor element) and the intensity is compared to a reference level. The resulting error signal, suitably amplified, serves to adjust the first coupler, driving the output intensity to the reference level in a negative feedback loop. The design and performance of a device fabricated in Ti-indiffused lithium niobate is discussed.

Citation Download Citation

David A. Smith "Guided Wave Optical Power Regulator", Proc. SPIE 0704, Integrated Optical Circuit Engineering IV, (10 March 1987); https://doi.org/10.1117/12.937189

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