High Sensitivity, High Data Rate Receivers For ISL Using Low-Noise Silicon APD's

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Abstract
Silicon APD's (Avalanche Photodiodes) with very low excess noise factors have been developed at RCA. At 830 nm and an average gain of 150, an excess noise factor of 2.6 should be possible in a 100 μm active diameter detector, with a quantum efficiency of 90% and a capacitance of 0.25 pF. When combined with a low-noise preamplifier, it is predicted that direct-detection optical receivers can be constructed with a sensitivity which is within 3 to 4 dB of that achievable with an "ideal" optical receiver.© (1989) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

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