III-V Heterostructure Avalanche Photodiode Modules for Fiber Optic Communication Links in the 1.0 to 1.3 Micrometer Spectral Range.
Interim rept. no. 1, Feb-Jul 78,
VARIAN ASSOCIATES PALO ALTO CA SOLID STATE LAB
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Lattice-matched InGaAsP avalanche photodiodes have been fabricated for detection of light in the 1.0 - 1.3 micron wavelength range. Uniform gains of 15 and quantum efficiencies of 63 have been achieved. Leakage current for 7-mil diameter APDs is under 5 nA until 70 of the breakdown voltage, but increases rapidly for higher voltages, and is ultimately the main cause of limited device performance. Experiments suggest that the leakage current is surface dominated, so that guard rings can be built to substantially improve performance. Author
- Electrical and Electronic Equipment
- Solid State Physics
- Non-Radio Communications