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Tapered Velocity Couplers Composed of Nonlinear Waveguides for Limiting Optical Power
Toshiaki KITAMURA Tetsuro YABU Masahiro GESHIRO Shinji HARADA Shinnosuke SAWA
IEICE TRANSACTIONS on Electronics
Publication Date: 2001/04/01
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electromagnetic Theory
tapered velocity coupler, nonlinear waveguide, optical power limiter, finite difference method,
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This paper proposes an optical power limiter composed of serially connected two tapered velocity couplers consisting partly of nonlinear material. The method of device designing is explained and it is exemplified that the optical output can be regulated stably to a prescribed value over a wide range of optical input. The device performance is simulated by means of FD-BPM algorithm.