Pumping source with a number of pumping lasers for the raman...

Details Pumping source with a number of pumping lasers for the raman... Pumping source with a number of pumping lasers for the raman...

2005-03-22

2005-03-22

Hellner, Mark (Department: 3663)

Optical: systems and elements

Optical amplifier

Raman or brillouin process

Reexamination Certificate

active

06870665

ABSTRACT:
A pumping source is provided for the Raman amplification of an optical wavelength division multiplex signal, wherein the pumping source has a number of pumping lasers with, in each case, different pumping wavelengths. Modules for the angle and/or amplitude modulation of pumping signals of the pumping lasers are connected to the pumping lasers, such that by appropriate adaptation of the modulation of the pumping signals mixing products from four-wave mixing between the pumping signals are suppressed.

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IEEE Photonic's Technology Letters, vol. 12, Nio. 11, Nov. 2000—“Accumulation of Gain Tilt in WDM Amplified Systems Due to Raman Crosstalk” Mazurczky et. al., pp. 1573-1575.
“Impact of nonlinear pump interactions on broadband distributed Raman amplification”, Neuhauser et al.
IEEE Journal on Selected Topics in Quantum Electronics, vol. 7, No. 1, Jan./Feb. 2001 “Ultrabroad-Band Raman Amplifiers Pumped and Gain-Equalized by Wavelength-Division-Multiplexed High-Power Laser Diodes” Namiki et al., pp. 3-16.

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