A novel stabilization method for an optical frequency comb generator

A method to set and stabilize eigenfrequencies of an optical frequency comb generator with respect to the frequency of an incident laser field is presented. A polarization-analysis of the transmitted light of the comb generator provides dispersion-shaped error signals for the stabilization of the eigenfrequencies of an optical comb generator at an adjustable offset to the frequency of the incident laser field. The method uses no additional modulation techniques nor the detection at the operating microwave frequency of the comb generator. Reliable long-term operation is achieved by additional stabilization of the birefringence of the modulator.