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Proceedings Paper

Guided Wave Optical Power Regulator
Author(s): David A. Smith
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Paper 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.

Paper Details

Date Published: 10 March 1987
PDF: 6 pages
Proc. SPIE 0704, Integrated Optical Circuit Engineering IV, (10 March 1987); doi: 10.1117/12.937189
Show Author Affiliations
David A. Smith, Bell Communications Research (United States)


Published in SPIE Proceedings Vol. 0704:
Integrated Optical Circuit Engineering IV
Mark A. Mentzer; Sriram Sriram, Editor(s)

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