Light source for raman amplification, light source system for raman amplification, raman amplifier, and raman amplifying system
AssigneeFurukawa Electric Co., Ltd.
InventorsHaruki OGOSHI, Masahito MORIMOTO
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Abstract
A light source for Raman amplification to Raman-amplify signal light includes: plural incoherent light sources that output incoherent light; plural pumping light sources that output second-order pumping light; an optical fiber for Raman amplification to Raman-amplify the incoherent light with the second-order pumping light, and outputs the amplified incoherent light; and an output unit connected to the optical transmission fiber, receiving the amplified incoherent light, and outputting the amplified incoherent light as first-order pumping light having a wavelength that Raman-amplifies the signal light to the optical transmission fiber.
Claims23
A light source for Raman amplification to Raman-amplify signal light transmitted through an optical transmission fiber by a stimulated Raman scattering phenomenon in the optical transmission fiber, the light source for Raman amplification comprising:
- plural incoherent light sources that output incoherent light;
- plural pumping light sources that output second-order pumping light having a wavelength that Raman-amplifies the incoherent light;
- an optical fiber for Raman amplification that is connected to the plural incoherent light sources and the plural pumping light sources and that is configured to Raman-amplify the incoherent light that has been input thereto with the second-order pumping light that has been input thereto, and outputs the amplified incoherent light;
- and
- an output unit that is connected to the optical transmission fiber, receives the amplified incoherent light that has been Raman-amplified by the optical fiber for Raman amplification, and outputs the amplified incoherent light as first-order pumping light having a wavelength that Raman-amplifies the signal light to the optical transmission fiber.
A light source for Raman amplification to Raman-amplify, in an optical transmission fiber, signal light transmitted through the optical transmission fiber, the light source for Raman amplification comprising:
- plural incoherent light sources that output incoherent light;
- plural pumping light sources that output second-order pumping light having a wavelength that Raman-amplifies the incoherent light;
- and
- an output unit that is connected to the plural incoherent light sources, the plural pumping light sources, and the optical transmission fiber, and that is configured to output the incoherent light and the second-order pumping light that have been input thereto so that the incoherent light and the second-order pumping light propagate in the same direction through the optical transmission fiber, wherein
- in the optical transmission fiber, the incoherent light that has been input thereto is Raman-amplified by the second-order pumping light that has been input thereto, and first-order pumping light having a wavelength that Raman-amplifies the signal light is generated.
A light source system for Raman amplification for Raman-amplifying, in an optical transmission fiber, signal light transmitted through the optical transmission fiber, the light source system for Raman amplification comprising:
- a first light source unit including first plural incoherent light sources that output first incoherent light and a first output unit that is connected to the first plural incoherent light sources and the optical transmission fiber and outputs the first incoherent light to the optical transmission fiber;
- and
- a second light source unit including first plural pumping light sources that output first second-order pumping light having a wavelength that Raman-amplifies the first incoherent light and a second output unit that is connected to the first plural pumping light sources and the optical transmission fiber and outputs the first second-order pumping light to the optical transmission fiber, wherein
- the first output unit and the second output unit are connected to the optical transmission fiber so that the first incoherent light and the first second-order pumping light propagate in directions opposite to each other through the optical transmission fiber between the first output unit and the second output unit, and
- in the optical transmission fiber between the first output unit and the second output unit, the first incoherent light that has been input thereto is Raman-amplified by the first second-order pumping light that has been input thereto, and first-order pumping light having a wavelength that Raman-amplifies the signal light is generated.
Dependencies are inferred from the claim text.