Patent ID: 9575390
Date: 2017-02-21
CPC Classifications: G02B,G02F,H01S

Claim:
1. A system, comprising: an optical multiplexer having first, second and third ports, the first port being configured to receive pump radiation and transmit the pump radiation to the third port; and an optical fiber optically coupled to the optical multiplexer at the second port, the second port being configured to receive radiation from the optical fiber and transmit it to the third port, wherein first and second wavelength-selective reflectors are formed onto the optical fiber, wherein the first wavelength selective reflector is configured to reflect radiation of a first wavelength and the second wavelength reflective selector is configured to reflect radiation of a second wavelength that is longer than the first wavelength, wherein the first and second wavelengths are selected such that Raman scattering and gain in a transmission fiber converts primary pump radiation at a primary pump wavelength less than the first wavelength to radiation of the first wavelength and also convert radiation of the first wavelength to radiation of the second wavelength.