High speed single- and multi-element fiber-grating coupled diode laser transmitters for WDM networks

We report single- and multi-element fibre grating coupled diode laser transmitter modules that emit at ITU-designated wavelengths. In addition, we demonstrate that they can attain a direct modulation bandwidth that is as high as 4.62 GHz. Previously, the highest speed reported for these devices was 3.5 GHz.