Photodetectors For Long Wavelength Optical Fiber Communication Systems

Hiroshi Kanbe

doi:10.1117/12.935174

30 November 1983 Photodetectors For Long Wavelength Optical Fiber Communication Systems

Hiroshi Kanbe

Proceedings Volume 0395, Advanced Infrared Sensor Technology; (1983) https://doi.org/10.1117/12.935174
Event: 1983 International Technical Conference/Europe, 1983, Geneva, Switzerland

Abstract

Recent developments on a germanium avalanche photodiode (Ge-APD) and an InP/InGaAs-APD with a planar structure are described. The Ge-APD with a wide depletion layer had improved quantum efficiency and response speed at 1.55 μm wavelength. Transmission experiment using the Ge-APD showed 2 to 4 dB improvement in the minimum average received power yielding 10-9 error rate. A planar InP/InGaAs-APD with separated multiplication and absorption regions was fabricated by using a new technique for forming a guard ring. The guard ring junction was realized by Cd diffusion through a thin Si02 film. A low surface impurity density and linearly-graded junction were obtained by tie diffusion technique. A uniform multiplication gain of over 30 was achieved in the sensitive area.

Citation Download Citation

Hiroshi Kanbe "Photodetectors For Long Wavelength Optical Fiber Communication Systems", Proc. SPIE 0395, Advanced Infrared Sensor Technology, (30 November 1983); https://doi.org/10.1117/12.935174

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