Optical beam-shifter module with high extinction ratio for 1024-input-port optical-switching network
- 28 June 1993
- proceedings article
- Published by SPIE-Intl Soc Optical Eng
- p. 328-334
- https://doi.org/10.1117/12.147926
Abstract
An optical beam shifter module consisting of liquid-crystal cells and a birefringent plate is investigated for a 1024-input-port switching network. High extinction ratio (> 20 dB) and low insertion loss (0.5 dB) are achieved by optimal device design. Precise optical alignment is obtained without any adjustment mechanism by using assembly baseplate and an optical assembly bench.Keywords
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