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Proceedings Paper

Single-mode fiber coupling to laser diode arrays
Author(s): Robert Addison Boudreau; William C. Rideout; R. L. Morrison; R. H. Sargent
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Paper Abstract

Laser-diode arrays were optically coupled to single-mode uptapered and single-mode cleaved fibers through a single lens. Coupling efficiencies ranged from 34 to 9 percent for five-element-edge-emitting arrays having 254-micron laser spacing and from 31 to 7 percent for arrays having 350-micron laser spacing. The number of laser elements that could be coupled through the lens was limited by its numerical aperture. Optical crosstalk between separately addressed laser elements was less than -50 dB. Uptapered fibers showed a fivefold relaxation of the translational alignment tolerance compared to cleaved fibers. When surface-emitting lasers are used the numerical aperture limitation of the lens allows many more elements to be coupled. A proposed example is shown of a surface-emitting array coupled to 17 fibers through one lens.

Paper Details

Date Published: 1 October 1990
PDF: 10 pages
Proc. SPIE 1291, Optical and Digital Gallium Arsenide Technologies for Signal Processing Applications, (1 October 1990); doi: 10.1117/12.21002
Show Author Affiliations
Robert Addison Boudreau, GTE Labs. Inc. (United States)
William C. Rideout, GTE Labs. Inc. (United States)
R. L. Morrison, GTE Labs. Inc. (United States)
R. H. Sargent, GTE Labs. Inc. (United States)


Published in SPIE Proceedings Vol. 1291:
Optical and Digital Gallium Arsenide Technologies for Signal Processing Applications
Mark P. Bendett; Daniel H. Butler; Arati Prabhakar; Andrew C. Yang, Editor(s)

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