Calculation of the efficiency of coupling light from a stripe-geometry GaAs laser into optical fiber with two-layer spherical end

Hong Ju Liu

doi:10.1117/12.216986

21 August 1995 Calculation of the efficiency of coupling light from a stripe-geometry GaAs laser into optical fiber with two-layer spherical end

Hong Ju Liu

Author Affiliations +

Proceedings Volume 2538, Nonimaging Optics: Maximum Efficiency Light Transfer III; (1995) https://doi.org/10.1117/12.216986
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

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.

Citation Download Citation

Hong Ju Liu "Calculation of the efficiency of coupling light from a stripe-geometry GaAs laser into optical fiber with two-layer spherical end", Proc. SPIE 2538, Nonimaging Optics: Maximum Efficiency Light Transfer III, (21 August 1995); https://doi.org/10.1117/12.216986

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