WDM operation of a hybrid emitter integrating a wide-bandwidth on-chip mirror

A wide-bandwidth on-chip mirror based on a deeply etched Bragg grating localized over 10 /spl mu/m is presented; it exhibits reflectivity over more than 25 nm. Integration within a laser-Mach-Zehnder modulator is shown and the wavelength-division multiplexing capability of the device demonstrated in a hybrid Bragg reflector configuration, by showing operation of the same InP chip with fiber gratings from 1534 to 1558 nm.