Input monitoring system for optical amplifying repeater

Details Input monitoring system for optical amplifying repeater Input monitoring system for optical amplifying repeater

2006-08-15

2006-08-15

Keith, Jack (Department: 3663)

Optical: systems and elements

Optical amplifier

Optical fiber

Reexamination Certificate

active

07092149

ABSTRACT:
An input monitoring system is provided in an optical amplifying repeater to monitor a level of an optical input signal. A monitored level of the optical input signal is used to detect a fault on an optical transmission path or to control a bias current for a laser diode which emits and supplies an exciting signal for exciting an optical fiber amplifier. To accurately monitor a level of the optical input signal, the input monitoring system comprises an input terminal supplied with the optical input signal, an optical fiber amplifier for amplifying the optical input signal, a first photo diode for detecting and outputting an electric signal corresponding a level of the optical input signal, and an optical switch operatively connected to the input terminal, the optical fiber amplifier and first photo diode for switching the optical input signal alternatively into the optical fiber amplifier and the first photo diode.

REFERENCES:
patent: 5299048 (1994-03-01), Suyama
patent: 5335109 (1994-08-01), Heidemann
patent: 5475521 (1995-12-01), Heidemann
patent: 5506724 (1996-04-01), Shimizu et al.
patent: 5510926 (1996-04-01), Bayart et al.
patent: 5764404 (1998-06-01), Yamane et al.
patent: 04-344725 (1992-12-01), None
patent: 5291667 (1993-05-01), None
patent: 05-284114 (1993-10-01), None
patent: 05-289127 (1993-11-01), None
patent: 57038 (1993-11-01), None
Tomita et al, EFOC/LAN '911 PP130-134, IGI Europe Inc., Boston, Mass, Jun. 21, 1991.
Aida et al, NTT Transmission Syst. Labs, Trans. Inst. Electron Inf. Communic. Eng. B-1, vol. 75B-1, #5, PP 298-303, May 1992.

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