Photodetector module with a photodiode electrically connected di

Details Photodetector module with a photodiode electrically connected di Photodetector module with a photodiode electrically connected di

1995-05-15

1997-03-11

Allen, Stephone

Radiant energy

Photocells; circuits and apparatus

Housings

250214A, 2502141, 361728, 257433, H01L 3102

Patent

active

056103956

ABSTRACT:
A photodetector module contains a package, a photodiode, a preamplifier, a bypass capacitor, a cap with a lens and a sleeve. A parallel plate capacitor is used as the bypass capacitor. The parallel plate capacitor is mounted at the center of the package. The photodiode is stuck on the parallel plate capacitor. Since the photodiode is piled upon the capacitor, the module curtails the area for mounting a capacitor. The fiber, the lens, the photodiode and the capcitor align along a central line with rotational symmetry. The two-story structure reduces the size of the module and the cost of production by decreasing the number of the parts and the steps of production.

REFERENCES:
patent: 4103157 (1978-07-01), Green
patent: 4758767 (1988-07-01), Blake
patent: 5132532 (1992-07-01), Watanabe
Horigome et al, "Pre-Amp Containing PD Module", 1990 Spring Conference of Electronics Information and Communication Society, vol. 4, C-271, Mar. 5, 1990, pp. 4-326.
Sawai et al, "Pre-Amp Containing PD Module", 1993 Spring Conference of Electronics Information Communication Society, vol. 4, C-186, Mar. 15, 1993, pp. 4-222.

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