Dr. Weeks graduated from the University of Nebraska College of Medicine in 1981. He works in Gretna, NE and 2 other locations and specializes in Family Medicine. Dr. Weeks is affiliated with CHI Health Bergan Mercy, CHI Health Lakeside Hospital, Nebraska Methodist Hospital and Nebraska Orthopaedics Hospital.
Ruoding Li - Carlisle MA, US Daniel B. Grossman - Norwood MA, US William Weeks - Ivyland PA, US
Assignee:
General Instrument Corporation - Horsham PA
International Classification:
H01S 3/00
US Classification:
35934141, 359344
Abstract:
An optical amplifier including: an amplifier having an input port and an output port, which is disposed along a main signal line of the optical amplifier; a dummy laser generation circuit having an output coupled to the main signal line and operative for inputting a dummy signal into the amplifier; a first optical detector for detecting a power level of the dummy signal into the amplifier and outputting a first power level signal; a second optical detector for detecting an amplified power level of the dummy signal output by the amplifier and outputting a second power level signal; a memory device for storing calibration data regarding the gain characteristics of the amplifier; and a gain control circuit which receives inputs from the first optical detector and second optical detector, and has an output coupled to the amplifier. The gain control circuit operates to control the gain of the amplifier based on the first power level signal, the second power level signal and the calibration data.
Method And Apparatus For Controlling An Optical Amplifier For Use In A Passive Optical Network
Ruoding Li - Carlisle MA, US Frank J. Effenberger - Freehold NJ, US Daniel B. Grossman - Norwood MA, US William Weeks - Ivyland PA, US
Assignee:
GENERAL INSTRUMENT CORPORATION - Horsham PA
International Classification:
H01S 3/00
US Classification:
35933713
Abstract:
An optical amplifier including an input port and an output port which are coupled together via a data signal line; an amplifier circuit; a gain control circuit coupled to the data signal line and operative for detecting the power level of a burst signal input into the optical amplifier at the input port; and a dummy laser generation circuit having an output coupled to the data signal line and an input coupled to the gain control circuit; where the gain control circuit is operative for controlling the power level output by the dummy laser generation circuit so as to maintain the power level of a signal input into the amplifier circuit at a substantially constant level.