Long-term stabilized millimeter-wave generation using a high-power mode-locked laser diode module

In this paper, a 60-GHz-band millimeter-wave (mm-wave) signal generation us ing a new 60-GHz mode-locked laser diode (MLLD) module stabilized by an opt ical injection will be presented. To modularize the MLLD, the precise posit ion alignments and the fine tuning for the repetition rate is released; mor eover, the output optical power of more than 6.0 dBm and the stability over nearly 1500 h are obtained. It is experimentally confirmed that the freque ncy and power stabilities are several tens of hertz and less than 1 dBm, re spectively. The generated 60-GHz-band mm-wave signal with the 3-dB linewidt h of less than 300 Hz over a 100-km-long optical fiber link is also success fully demonstrated.