Coupling length adjustment for an optical directional coupler by loading a metal film
- 15 November 1978
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 33 (10), 856-858
- https://doi.org/10.1063/1.90213
Abstract
A simple method for realizing the desired light coupling for an optical directional coupler is presented. This method consists of loading a metal film on one of the waveguides in the undesired coupling region. The effective coupling length, fabricated in c‐plate LiNbO3, could be changed from 0 to 3L0 (L0: 0‐dB coupling length) by controlling the length of the metal film.Keywords
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