Operation of integrated InGaAsP-InP optical amplifier-monitoringdetector with feedback control circuit |
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| Authors: | Liou K-Y Koren U Burrows EC Oron M Miller BI Young M Raybon G Burrus CA |
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| Affiliation: | AT&T Bell Lab., Holmdel, NJ; |
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| Abstract: | Monolithic integration of a monitoring detector with an optical amplifier simplifies the use of an amplifier in lightwave systems. The structure and performance are described of a monolithically integrated semiconductor optical amplifier with low-loss Y-branching waveguides and a monitoring p-i-n detector. The photocurrent of the integrated detector can be used as a single control parameter for amplifier output leveling, gain optimization, and in situ monitoring of facet antireflective coatings |
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