A Raman amplifier assembly includes a Raman amplifier configured to receive a signal from
a signal source. The signal travels in an upstream direction in the Raman amplifier. A first …

A Raman amplifier includes a Raman gain fiber comprising a length of high-dispersion gain
fiber and operable to receive at least one optical signal. The Raman amplifier also includes …

A system and method for controlling gain shape in a Raman amplifier including a plurality of
pumps. The pumps produce a spectral distribution of output power characteristic. A feedback …

An optical pumping apparatus provides pumping for a Raman amplifier across either the C-
band alone, or across both the C-band and the L-band. A first pump unit provides the optical …

A method and apparatus for achieving broad gain bandwidth in a Raman amplifier using a
wavelength multiplexed pump source is provided. The pump source offers high power …

A Raman amplifier is provided that includes at least a portion of optical fiber in which an
optical signal travels. The optical fiber portion may encompass all or part of the optical …

Abstract Multiwavelength Raman pumps for Raman amplifiers are provided. The
multiwavelength Raman pumps may be based on semiconductor devices that have multiple …

The specification describes a distributed Raman amplifier with multiple pump sources for
wide band amplification of wavelength division multiplexed (WDM) signals. It was …

A multi-wavelength cascaded Raman resonator (“MWCRR”). The MWCRR has an optical
source for pumping optical radiation centered around an input wavelength. The MWCRR …

According to one aspect of the present invention an ampli? er system includes:(i) a
distributed Raman? ber ampli? er adapted to amplify C and L-band signals and;(ii) a …