Wavelength tunable CW Raman fiber ring laser operating at 1486-1551 nm

Summary form only given. Erbium doped fiber lasers and amplifiers have provided a wealth of high power sources in the 1530 to 1580 nm spectral region. Other dopants such at ytterbium and thulium offer gain in other limited spectral regions but the non-linear effect of stimulated Raman scattering (SRS) provides for gain at any wavelength with the provision of a suitable pump source. Here we detail the optimization of a tunable fiber Raman ring laser with CW output between 1486 and 1551 nm, and use it to provide Raman gain over a tunable wavelength range of 1589 to 1650 nm.