A 24-channel wavelength-selectable Er-fiber ring laser with intra-cavity waveguide-grating-router and semiconductor Fabry-Perot filter

We present an Er-doped fiber ring laser that operates with a single wavelength, which is selectable from any channel wavelength of a 24-channel silica waveguide grating WDM multiplexer. Error-free performance is demonstrated, we believe for the first time, for a waveguide-grating-router fiber laser at 5 Gb/s.