Semiconductor laser array with fault tolerant coupling

Details Semiconductor laser array with fault tolerant coupling Semiconductor laser array with fault tolerant coupling

1986-10-27

1988-01-12

Davie, James W.

Coherent light generators

Particular active media

Semiconductor

372 45, 372 50, H01S 319

Patent

active

047196343

ABSTRACT:
A semiconductor laser array having a plurality of sets of interconnecting waveguides, each joining two optical waveguides together at respective branching junctions. The array has a plurality of semiconductor layers disposed on a substrate, at least one of the layers forming an active region for light wave generation and propagation under lasing conditions. One or more structures, such as current confining channels, a channelled substrate and variable thickness active region define a plurality of adjacent optical emitting waveguides. The waveguides are coupled together in a coupling geometry which ensures that breaks or failures in one or more branches are bypassed, thereby maintaining in-phase laser array operation.

REFERENCES:
patent: Re31806 (1985-01-01), Scifres et al.
patent: 4255717 (1981-03-01), Scifres et al.
D. R. Scifres et al.; "Semiconductor Lasers with Integrated Interferometric Reflectors"; American Institute of Physics; vol. 30, No. 11, Jun. 1, 1977.

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