Digital fault-tolerant variable fiber optic attenuator using liquid crystals

Nabeel A. Riza; Yu Huang

doi:10.1117/12.391938

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13 July 2000 Digital fault-tolerant variable fiber optic attenuator using liquid crystals

Nabeel A. Riza, Yu Huang

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Proceedings Volume 4046, Advances in Optical Information Processing IX; (2000) https://doi.org/10.1117/12.391938
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

A high-speed variable fiber-optic attenuator is introduced by using a digitally controlled multi-pixel liquid crystal device. A proof of concept attenuator is experimentally demonstrated using a 33-pixel ferroelectric liquid crystal device. The attenuator gives a 26 dB dynamic range, a 0.18 dB polarization dependent loss, a 1.26 dB structure loss, and a 100 microsecond(s) switching speed, all at 1319 nm. The attenuator features digital control, broadband operation, no moving parts, fault-tolerance, low loss, and low electric power consumption.

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Nabeel A. Riza and Yu Huang "Digital fault-tolerant variable fiber optic attenuator using liquid crystals", Proc. SPIE 4046, Advances in Optical Information Processing IX, (13 July 2000); https://doi.org/10.1117/12.391938

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