ELECTROOPTIC TUNING OF A FIBER RING SEMICONDUCTOR-LASER

This letter reports recent results obtained In the area of wavelength tuning of semiconductor lasers. The laser is constructed from an InGaAsP 1300-nm semiconductor optical travelling-wave amplifier, The cavity consists of a fiber ring resonator using a low fiber coupler as the output mirror. The Intra-cavity electrooptic tuner works as a one-stage Lyot filter and allows wavelength tuning over a spectral range of 20 mm with a tuning rate of 0.05 nm V-1. This is one of the best results reported using electrooptic birefringent tuning systems.