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Proceedings Paper

Calculation of the efficiency of coupling light from a stripe-geometry GaAs laser into optical fiber with two-layer spherical end
Author(s): Hong Ju Liu
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Paper Abstract

The coupling efficiency of light from a GaAs laser into an optical fiber with two-layer spherical end. In this paper, the formulas of calculating the half-acceptance angle of the fiber with two-layer spherical end is derived first. The relationship between the angle (theta) and the refractive angle (gamma) ((theta) ) is derived by ray-tracing techniques. A more complete analysis is done for the restriction by which a ray may not be accepted into the fiber core, namely, waveguide, grazing incidence, and core-aperture restriction. We also calculate the maximum acceptance angle of our fibers and the efficiency of coupling a semiconductor laser beam into an optical fiber with two-layer spherical lens on fiber end. The highly coupling efficiency of up to 80% is arrived.

Paper Details

Date Published: 21 August 1995
PDF: 5 pages
Proc. SPIE 2538, Nonimaging Optics: Maximum Efficiency Light Transfer III, (21 August 1995); doi: 10.1117/12.216986
Show Author Affiliations
Hong Ju Liu, Changchun Institute of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 2538:
Nonimaging Optics: Maximum Efficiency Light Transfer III
Roland Winston, Editor(s)

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