Abstract

A systematic and detailed study of launching light from semiconductor lasers into plane-ended multimode optical fibers has been carried out—we believe for the first time. Three different semiconductor lasers and four multimode fibers having numerical apertures in the 0.16–0.40 range were used. Simple theoretical models developed for the launching efficiency η give good agreement with experimental results. We show how erroneous results can be obtained when considering only the stimulated emission of the lasers in calculating η. The dependence of η on axial, lateral, and angular misalignments is also investigated and explained qualitatively with ray optics.

© 1983 Optical Society of America

Launching light from semiconductor lasers into multimode optical fibers having hemispherical ends and taper-with-hemisphere ends

Harish R. D. Sunak and Marlete A. ZamprÔnio
Appl. Opt. 22(15) 2344-2348 (1983)

Reflected light in the coupling of semiconductor lasers with tapered hemispherical end fibers

Hideo Kuwahara, Yoshihito Onoda, Masami Goto, and Takakiyo Nakagami
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Comparison of efficiency and feedback characteristics of techniques for coupling semiconductor lasers to single-mode fiber

G. Wenke and Y. Zhu
Appl. Opt. 22(23) 3837-3844 (1983)

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