Optical semiconductor device, method of producing the optical se

Coherent light generators – Particular resonant cavity – Distributed feedback

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372 50, 372 46, 372 45, 372 94, 372 6, 437129, H01S 308

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053475330

ABSTRACT:
An optical semiconductor device includes first and second cladding layers, a light guide layer sandwiched between the first and second cladding layers, and a layer structure provided in the light guide layer. The layer structure has a first periodic variation in a refractive index in a predetermined direction, and a second periodic variation in an optical gain in the predetermined direction. The first periodic variation has a period identical to that of the second periodic variation. The first periodic variation and the second periodic variation have a phase difference.

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