Title

Measurement of Launching Efficiency Into Multimode Optical Fibers Using Semiconductor Laser Diodes

Document Type

Article

Date of Original Version

1-1-1988

Abstract

A detailed and systematic study has been carried out, for the first time, of the launching efficiency of light, from semiconductor laser diodes into graded-index multimode optical fiber waveguides. Four different terminations of the fibers were investigated: Plane-ends (PE), hemispherical ends (HE), taper-with-hemisphere ends (TE), and roof-top (RT) ends. Besides launching efficiency, the parameters of interest were the various misalignments, such as axial, lateral, and angular, between laser and fiber, and the effect of these to produce a reduction in the launching efficiency. For the Rt end, we also investigated this reduction with angular rotation of the fiber about its axis. © 1988 IEEE.

Publication Title

IEEE Transactions on Instrumentation and Measurement

Volume

37

Issue

4

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