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10 June 1994 High-saturation-intensity InGaAs/InP PIN waveguide photodetector
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High-frequency and high-responsivity photodetectors which possess a high saturation intensity are needed for high performance analog fiber optic links. We report the results of a high saturation intensity InGaAs/InP PIN waveguide photodetector. At an optical wavelength of 1.3 micrometers , the detector has a responsivity of 0.5 A/W and a flat frequency response from 800 MHz to 20 GHz. With a bias of -4 V, the normalized frequency response of the detector remains unchanged when optical powers up to 10 mW are incident on the detector. An initial linearity measurement is made by measuring the linearity of a fiber optic link which uses the detector with a DC photocurrent of 140 (mu) A as the receiver. The linearity of the link is limited by the modulator of the link and there is no detectable nonlinearity introduced by the detector.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andrew R. Williams, Albert L. Kellner, and Paul K. L. Yu "High-saturation-intensity InGaAs/InP PIN waveguide photodetector", Proc. SPIE 2155, Optoelectronic Signal Processing for Phased-Array Antennas IV, (10 June 1994);


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