Signal strength detection circuits for high speed optical...

Details Signal strength detection circuits for high speed optical... Signal strength detection circuits for high speed optical...

2005-11-15

2005-11-15

Luu, Thanh X. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S210000, C330S255000

Reexamination Certificate

active

06965103

ABSTRACT:
This disclosure is generally concerned with devices for determining photocurrent levels. One example of such a device is an optoelectronic device that includes a photodetector. The photodetector is configured to receive an optical signal and generate a corresponding electrical signal. The electrical signal is received by a pre-amplifier circuit which then converts the received electrical signal to a differential output. Finally, a post-amplifier circuit in communication with the first stage circuit is configured to derive an optical signal strength of the optical signal based upon the differential output received from the pre-amplifier circuit.

REFERENCES:
patent: 5237526 (1993-08-01), Delagrange
patent: 5430765 (1995-07-01), Nagahori
U.S. Appl. No. 11/068,284 filed Feb. 28, 2005 entitled “Signal Strength Detection Circuits for HIgh Speed Optical Electronics”.

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