Divergence feedback in a linear fiber optic analog transmission

Details Divergence feedback in a linear fiber optic analog transmission Divergence feedback in a linear fiber optic analog transmission

1994-12-08

1996-07-09

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359161, 359188, H04B 1004, H04B 1012

Patent

active

055350399

ABSTRACT:
A method and apparatus for improving the linearity of an analog signal in a fiber optic transmission system in which copies of the analog signal are provided to a remote receiver and to a feedback receiver, and in which the copy to the feedback receiver is attenuated so that the signal received at the feedback receiver is substantially similar to the signal received at the remoter receiver. An amplifier subtractively combines the signal from the feedback receiver and the analog signal to thereby provide a signal that pre-compensates for non-linearities that would be encountered by a transmission through the system. The feedback receiver and the remote receiver are substantially similar in operation so that the feedback loop substantially duplicates the environment of the transmission.

REFERENCES:
patent: 4399566 (1983-08-01), Roullet
patent: 5166509 (1992-11-01), Curran

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