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Proceedings Paper

Optical birefringent 90° hybrid for coherent receiver in free-space optical communication system
Author(s): Ya'nan Zhi; Yu Zhou; Jianfeng Sun; Aimin Yan; Zhu Luan; Lijuan Wang; Liren Liu
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Paper Abstract

The design of an optical birefringent 90° hybrid for coherent receiver in free-space optical communication system is presented. The bulk optical design of 2×4 90° hybrid is a six-port device with two inputs and four outputs. For the balanced receiver configuration two pairs of 180° phase shifted outputs are obtained and one pair has a phase shift of 90° with respect to the other. The optical birefringent 90° hybrid includes two pairs of birefringent plates, an analyser plate and a λ/8 wave plate. The scheme of phase compensation is also presented.

Paper Details

Date Published: 21 August 2009
PDF: 8 pages
Proc. SPIE 7464, Free-Space Laser Communications IX, 746410 (21 August 2009); doi: 10.1117/12.824680
Show Author Affiliations
Ya'nan Zhi, Shanghai Institute of Optics and Fine Mechanics (China)
Yu Zhou, Shanghai Institute of Optics and Fine Mechanics (China)
Jianfeng Sun, Shanghai Institute of Optics and Fine Mechanics (China)
Aimin Yan, Shanghai Institute of Optics and Fine Mechanics (China)
Zhu Luan, Shanghai Institute of Optics and Fine Mechanics (China)
Lijuan Wang, Shanghai Institute of Optics and Fine Mechanics (China)
Liren Liu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 7464:
Free-Space Laser Communications IX
Arun K. Majumdar; Christopher C. Davis, Editor(s)

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