Alliance Fiber Optic Products, Inc.

Christine Luochanghong Lee

Yao Li

Chun He

Wei-Shin Tsay

Frank Wu

Improved designs of optical devices for processing optical signals with one or more specified wavelengths are disclosed. According to embodiment, a filter mirror assembly appears an 'L' shape and provides a filtering function as well as a reflecting function. The filter mirror assembly is so mounted that a rotation thereof will not alter the optical path the beam positions of signals resulted from a rotation of the filter mirror assembly. To cancel or minimize a lateral shift introduced to a light beam going through an optical filter, an optical compensator is introduced and rotates oppositely whenever the optical filter rotates.

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Sunnyvale, CA, United States of America

Christine Luochanghong Lee