CONTINUOUS AND DISCRETE WAVELENGTH TUNING IN ER-YB FIBER FABRY-PEROT LASERS

Continuous and discrete single-frequency tuning in the 1.5-mu m wavele ngth region are demonstrated by incorporation of erbium:ytterbium phos phosilicate fibers in single and compound fiber Fabry-Perot cavity con figurations. Continuous wavelength tuning was obtained over 3.3 nm in a single-cavity laser of 218-mu m cavity length. Discrete wavelength t uning was achieved over 9.59 nm in a compound-cavity laser having a 2- mm gain section.