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Coupling of a laser diode to single-mode fiber with an upside-down tapered lens end.

作者信息

Mondal S K, Sarkar S

机构信息

Fiber Optics Research Group, Department of Electronic Science, University of Calcutta, 92 Acharya Prafulla Chandra Road, Calcutta 700 009, India.

出版信息

Appl Opt. 1999 Oct 20;38(30):6272-7. doi: 10.1364/ao.38.006272.

DOI:10.1364/ao.38.006272
PMID:18324151
Abstract

We present in detail a simple analysis of the coupling efficiency and possible transverse and angular misalignment losses of a laser diode to single-mode, step-index fiber excitation with an upside-down tapered lens (UDTL) end, drawn by molding the end of a step-index fiber. The analysis employs our recently formulated ABCD matrix for an UDTL and has the advantage of simplicity compared with complicated methods involving cumbersome numerical integrations. Both the analysis and the results should be useful in designing coupling optics that use such lenses in the context of probable misalignments.

摘要

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