14 August 2003 Recent advances in photodetectors with distributed optical amplification
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For the past few years, we have been researching a novel type of photodetector featuring distributed optical amplification. We call these devices traveling-wave amplifier-photodetectors, or TAP detectors. The distributed combination of gain and absorption seeks a larger efficiency while keeping a low optical power, thus avoiding saturation. In this paper, we present experimental results both of GaAs- and InP-based TAP detectors, showing in the former case an external quantum efficiency larger than 200%, and larger than 100% in the latter. The performance limitation is shown to be related to the competition between the optical input signal and the amplified spontaneous emission (ASE) generated in the amplifier.
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Daniel Lasaosa, Daniel Lasaosa, Donato Pasquariello, Donato Pasquariello, Joachim Piprek, Joachim Piprek, John Edward Bowers, John Edward Bowers, } "Recent advances in photodetectors with distributed optical amplification", Proc. SPIE 5246, Active and Passive Optical Components for WDM Communications III, (14 August 2003); doi: 10.1117/12.531987; https://doi.org/10.1117/12.531987


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