Efficient coupling of a semiconductor laser to an optical fiber by means of a tapered waveguide on silicon

A Si3N4 core waveguide, matched to a laser mode, is adiabatically tapered into a SiO2:P core waveguide, matched to a fiber mode. When used to couple the light from a semiconductor laser into an optical fiber, a loss of 3.1 dB is obtained, compared to a loss of 4.5 dB obtained with a lensed fiber.

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Bibliographic Details
Published in:Applied physics letters 1989-12, Vol.55 (23), p.2389-2391
Main Authors: SHANI, Y, HENRY, C. H, KISTLER, R. C, ORLOWSKY, K. J, ACKERMAN, D. A
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Lasers
Optics
Physics
Semiconductor lasers
laser diodes
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Description
Summary:A Si3N4 core waveguide, matched to a laser mode, is adiabatically tapered into a SiO2:P core waveguide, matched to a fiber mode. When used to couple the light from a semiconductor laser into an optical fiber, a loss of 3.1 dB is obtained, compared to a loss of 4.5 dB obtained with a lensed fiber.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.102290