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Optical Engineering

Design of single-channel optical rotary joint using bulk optical detector
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Paper Abstract

The insertion loss of a fiber optical rotary joint depends on the mechanical misalignments of the collimating lenses. To achieve 3-dB or less insertion loss, the lateral misalignment of the graded-index (GRIN) lenses should be less than 100 μm, and the angular tilt of these lenses is limited to 0.1 deg. These requirements cause a high mechanical fabrication and assembly cost. To solve this problem, we design a single-channel optical rotary joint using a bulk optical detector. The requirement on lateral misalignment is relaxed to 500 μm, and the angular tilting is relaxed to 2 deg. Using this method, the cost of the optical rotary joint can be dramatically reduced.

Paper Details

Date Published: 1 November 2003
PDF: 5 pages
Opt. Eng. 42(11) doi: 10.1117/1.1614809
Published in: Optical Engineering Volume 42, Issue 11
Show Author Affiliations
Wencai Jing, Tianjin Univ. (China)
Yimo Zhang, Tianjin Univ. (China)
Ge Zhou, Tianjin Univ. (China)
Dagong Jia, Tianjin Univ. (China)
Bao Liu, Tianjin Univ. (China)
Feng Tang, Tianjin Univ. (China)


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