Abstract

Stimulated Brillouin scattering (SBS) is one of the nonlinear optical effects In optical fibers with the lowest threshold power. Owing to the long interaction length possible in low-loss fibers, the threshold power at which SBS becomes detectable can be as low as several milliwatts at 1.3—1.6- μm wavelengths.^1,2 It has been shown that such a low threshold may cause an input power limitation problem in long-distance optical communication systems.^1,2 However, it has been predicted that SBS could be greatly suppressed by means of proper modulation techniques, particularly phase shift keying (PSK) modulation.²

© 1988 Optical Society of America