Optical receiver including a dual gain path amplifier system

Details Optical receiver including a dual gain path amplifier system Optical receiver including a dual gain path amplifier system

2006-08-15

2006-08-15

Chan, Jason (Department: 2633)

Optical communications

Receiver

C398S210000, C398S213000

Reexamination Certificate

active

07092644

ABSTRACT:
An optical receiver may include a photodetector that is configured to generate an electrical signal in response to detecting an optical signal, a first gain path coupled to receive and amplify the electrical signal generated by the photodetector, and a second gain path coupled to receive and amplify the electrical signal generated by the photodetector. The second gain path may have a higher gain than the first gain path. The two gain paths may be configured to amplify the electrical signal independently of each other. The optical receiver may also include a switch that selectably outputs an amplified electrical signal from one of the gain paths based on a magnitude of a signal corresponding to the optical signal.

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“Swept Wavelength Testing: Insights Into Swept-Wavelength Characterization of Passive Fiber-Optic Components”, Application Note 11, Rev B, New Focus, Inc., San Jose, CA, 2001.

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