Raman amplifier with pump source for improved performance

Details Raman amplifier with pump source for improved performance Raman amplifier with pump source for improved performance

1999-02-04

2000-11-14

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Raman or brillouin process

359124, 359134, 359160, 372 3, 372 70, G02B 628, G02B 636, H01S 330

Patent

active

06147794&

ABSTRACT:
In accordance with the invention, a first order Raman amplifier comprises a low power first order Raman pump followed by one or more components that are lossy or unreliable at high power levels. After passing through the component, the first order pump is itself amplified by a second order Raman amplifier. The amplified first order pump is then used to amplify optical signals in a transmission fiber. Advantages are that resulting pump source is more reliable and relatively insensitive to insertion loss. Convenient low power sources, such as filtered spontaneous emission sources can be used as the first order pump source. And the gain spectrum of the second order pump can be used to compensate the gain spectrum of the first order pump.

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Stentz, AJ, Conf. Opt. Fiber Commun. Tech. Digest, vol. 6, pp 343; abstract only herewith, Feb. 21, 1997.
Masuda et al, BCOC 97, Conf. Public. #448, pp 73-76, Sep. 1997.
Stentz et al, OFC '96, vol. 92, pp 16-17, Mar. 1, 1996.

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