Control of a free-space adaptive optical interconnect using a liquid-crystal spatial light modulator for beam steering

C. J. Henderson; B. Robertson; D. Gil LeyvaT. D. WilkinsonD. C. OBrienG. Faulkner

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Control of a free-space adaptive optical interconnect using a liquid-crystal spatial light modulator for beam steering

机译：Control of a free-space adaptive optical interconnect using a liquid-crystal spatial light modulator for beam steering

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摘要

An adaptive beam position control system is reported, for use in alignment correction for free-space parallel optical interconnects at the board-to-board level. A liquid-crystal spatial light modulator (SLM) displaying binary phase gratings is used as a diffractive optical element to steer the beam. The design and implementation of a feedback controller for the SLM are presented, and shown in experimental results to completely correct for step disturbances within 1 to 2 sample periods. Extension of the system to tolerate random vibrations is considered, in terms of both the required SLM technology and the design of the control algorithms. The discussion highlights some of the trade-offs in choosing components when using this technology to correct for different levels of vibration.

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来源
《Optical Engineering》 |2005年第7期|075401-1-075401-8-0|共8页
作者
C. J. Henderson; B. Robertson; D. Gil LeyvaT. D. WilkinsonD. C. OBrienG. Faulkner;
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作者单位

Cambridge University Engineering Department Trumpington Street Cambridge, CB2 1PZ, United Kingdom;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类光学仪器;
关键词
adaptive optics; alignment; free-space optical interconnect; computer-generated holograms; spatial light modulators; feedback control;

Control of a free-space adaptive optical interconnect using a liquid-crystal spatial light modulator for beam steering

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