Electro-optic device having a laterally varying region

Coherent light generators – Particular resonant cavity – Distributed feedback

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372 46, H01S 319

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active

048377759

ABSTRACT:
A distributed feedback laser comprising a semiconductor body having a channel which varies in width in the laterial direction and is periodic in the longitudinal direction. When the laser is electrically excited constructive interference of reflected light gives rise to a stable single wavelength output due to the periodic variations in the channel.

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