Monolithically integrated semiconductor optical preamplifier

Details Monolithically integrated semiconductor optical preamplifier Monolithically integrated semiconductor optical preamplifier

H - Electricity

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H01L 31/14 (2006.01) H01S 5/026 (2006.01) H01S 5/50 (2006.01)

Patent

CA 2040784

89-3-606 MONOLITHICALLY INTEGRATED SEMICONDUCTOR OPTICAL PREAMPLIFIER Abstract An optical preamplifier includes a semiconductor optical amplifier monolithically integrated with an optical detector and electrically isolated from the detector by an isolation region. The isolation region consists of a low-loss, preferably transparent, insulating material whose index of refraction is matched to at least the refractive index of the amplifier, leading to reduced facet reflectivity at the amplifier output facet. Alter- native device structures may include a waveguiding layer in the isolation region, a grating integrated with or following the optical amplifier, and a tuning region positioned between the amplifier and isolation region for filtering spontaneous emission.

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