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Optical Engineering

Aberration analysis and efficiency improvement of a bidirectional optical subassembly
Author(s): Hao Wu; Zhang-di Huang; Zi-yan Yu; Xiao-Shi Qian; Fei Xu; Beckham Chen; Yanqing Lu
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Paper Abstract

An approach to improve the coupling efficiency of bidirectional optical subassembly (BOSA) modules is proposed and experimentally demonstrated. We analyzed the wavefront aberration coefficients of a typical BOSA. It was found that the 45-deg wavelength filter induces coma and astigmatism, and then it further deteriorates the laser diode to fiber coupling. We measured the BOSA efficiencies based on a series of different filters. For a typical 0.5-mm filter, 25% coupling efficiency improvement was achieved by optimizing the filter parameters.

Paper Details

Date Published: 1 October 2009
PDF: 6 pages
Opt. Eng. 48(10) 105008 doi: 10.1117/1.3251278
Published in: Optical Engineering Volume 48, Issue 10
Show Author Affiliations
Hao Wu, Nanjing Univ. (China)
Zhang-di Huang, Nanjing Univ. (China)
Zi-yan Yu, Nanjing Univ. (China)
Xiao-Shi Qian, Nanjing Univ. (China)
Fei Xu, Nanjing Univ. (China)
Beckham Chen, Light Master Technology (Ningbo) Inc. (China)
Yanqing Lu, Nanjing Univ. (China)

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