a linear cavity Raman output wavelength to divide

 Pump source for Raman amplification, the method is to use a multi-pump only 14XXnm obtained via polarization multiplexing Raman pump source, but its relatively high cost and complex structure. The package of laser pointer should be firm enough.
Method two is the use of Raman device (RFL) to produce a specific wavelength of high-power, now the technology has been a considerable degree of development and the formation of a commercial product (such as the U.S. IPG, France Keosys other company can provide 5W of the Raman pump Pump module), and is considered far from the pump for Raman amplification and EDFA amplification reasonable application of light. From a linear cavity Raman output wavelength to divide, can be divided into single-wavelength and multi-wavelength Raman devices into two categories. Different linear Raman to the structure similar to the Bragg grating are used as cavity mirrors. RFL used on the active gain medium term, commonly used as a doped GeO2-doped gain medium, recent reports is the use of doping as P2O5-doped gain medium, the difference is that offsets Stock made different, general, doped GeO2 doping is 440cm-1, and P2O5 doped doping of 1330cm-1, so a P2O5-doped Raman frequency conversion required less the number of times, you can improve efficiency and reduce the complexity of RFL. The worker is packing laser pointer .
N. Kurukithoson and other meetings in ECOC'2001 reported a transform using two Raman gain 1480nm RFL output experiment, the pump wavelength of 1061nm [2], and the doped GeO2-doped RFL, a decrease of of a Raman-conversion. ECOC'2001 of another paper reported the production of P-doped Raman wavelength 1480nm single device to achieve +28 dBm output of EDFA [3]. OFC'2001 meeting reported in a paper by two Stocks output Raman fiber laser as the pump source excitation spectrum of single-mode supercontinuum generation experiments [4]. It consists of Raman lasers and supercontinuum (SC) cavity of two parts, of which Raman fiber laser device operating principle is shown in Figure 3.