Abstract

Since the early 1980’s, stimulated Raman scattering (SRS) in optical fibers has been viewed as a potential method to frequency-shift a pump wavelength to generate new light sources and to amplify optical signals. Most early approaches used a single fiber and downshifted the pump only one or two Stokes lines. However, with the development of high-powered diode lasers and Bragg gratings it is now possible to resonate each of the Stokes lines and to efficiently transfer the power over many Stokes shifts. Such a cw device, in which 1.6 W of power at 1064 nm was cascaded over three Stokes shifts to produce an output power of 0.8 W at 1240 nm and a gain of over 30 dB at 1313 nm, was recently reported.

© 1995 Optical Society of America