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US 2002/0159131 A1Published application
Optical amplifier providing dispersion compensation
AssigneeSycamore Networks, Inc.
InventorsGlenn Bartolini, Graeme Pendock, John Zyskind
Life of this patent
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Abstract
A dispersion-compensating fiber amplifier having a Raman pumped dispersion-compensating fiber and a distributed optical amplifier. The dispersion-compensating fiber is pumped such that the noise contribution of the dispersion-compensating fiber is reduced.
Claims74
An optical amplifier for amplifying an optical signal, comprising:
- a distributed amplifier;
- a Raman-amplifying dispersion-compensating fiber amplifier having a dispersion-compensating fiber optically coupled to the distributed amplifier such that the optical signal is serially processed by the distributed amplifier and the Raman-amplifying dispersion-compensating fiber amplifier;
- and
- a first Raman pump optically coupled to and pumping the dispersion-compensating fiber.
1 more element
An optical amplifier for amplifying an optical signal, comprising:
- a first distributed amplifier;
- a Raman-amplifying dispersion-compensating fiber amplifier having a dispersion-compensating fiber optically coupled to the distributed amplifier;
- a first Raman pump optically coupled to and pumping the dispersion-compensating fiber;
- a third optical amplifier optically coupled to the optically amplifying dispersion-compensating fiber;
- wherein the optical signal is serially processed by the distributed amplifier, the Raman-amplifying dispersion-compensating fiber amplifier, and the third optical amplifier.
2 more elements
An optical communications system for transmitting and amplifying an optical signal, comprising:
- a span of transmission fiber;
- a distributed optical amplifier optically coupled to the transmission fiber;
- a Raman-amplifying dispersion-compensating fiber amplifier having a dispersion-compensating fiber optically coupled to the transmission fiber;
- a first Raman pump optically coupled to and pumping the dispersion-compensating fiber;
- wherein the optical signal serially traverses the span of transmission fiber, the distributed amplifier, and the Raman-amplifying dispersion-compensating fiber amplifier.
2 more elements
A method of amplifying an optical signal, comprising:
- Raman pumping a transmission fiber using a Raman pump;
- propagating the optical signal through the Raman-pumped transmission fiber to provide a first signal output;
- Raman pumping a dispersion-compensating fiber using a Raman pump;
- propagating the first signal output, received from the Raman-pumped transmission fiber, through the Raman-pumped dispersion-compensating fiber.
1 more element
Dependencies are inferred from the claim text.