Control scheme for long wavelength channels in wideband WDM...

Details Control scheme for long wavelength channels in wideband WDM... Control scheme for long wavelength channels in wideband WDM...

2005-02-15

2005-02-15

Hellner, Mark (Department: 3663)

Optical: systems and elements

Optical amplifier

Raman or brillouin process

C359S341300

Reexamination Certificate

active

06856453

ABSTRACT:
There is provided in an optical amplifier device used for a system in which a power transfer takes place from comparatively short wavelength signal to a comparatively long wavelength signal. The device includes an amplifier stage coupled to an optical transmission medium, a monitor monitoring a status of a first band; and a pump light source unit supplying at least one first pump light to the optical transmission medium on the basis of the status of the first band monitored, so that the above at least one first pump light supplies additional power to longer wavelength channels related to the status of the first band.

REFERENCES:
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Yano et al., “Experimental Study onf SRS Loss and Its Compensation in Three-Band WDM Transmission” (with translation).
Kani et al., “Novel 1470-nm-Band WDM Transmission and Its Application to Ultra-Wide-Band WDM Transmission”, pp. 1131-1140.

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