ELECTROOPTIC NARROW-LINEWIDTH WAVELENGTH TUNING AND INTENSITY MODULATION OF AN ERBIUM FIBER RING LASER

We report an electrically tunable fiber laser featuring a 50-channel w avelength switching capability with a 0.2 nm linewidth and -20 dB cros stalk. The laser consists of an Er-doped fiber resonator and an electr o-optic TE-TM convertor used as a wavelength tunable filter. It allows wavelength tuning over a spectral range of 10 nm with a tuning rate o f 0.05 nm/V and a linewidth of 0.06 nm.