Masaki HIRANO^* and Akihiro MORIMOTO

Department of Photonics, College of Science and Engineering, Ritsumeikan University, Shiga 525-8577, Japan

(Received June 9, 2008; Accepted July 11, 2008)

We report about the optical frequency comb generation by means of a bulk type phase modulator with periodic domain inversion. The phase modulator operates as a quasi-velocity-matched electro-optical phase modulator having high modulation efficiency. It is possible to generate a broadband optical frequency comb by using the modulator installed into an Fabry–Perot resonator. In this experiment, we made the quasi-velocity-matched phase modulator and then used it to generate the efficient optical frequency comb. From this result, we could confirm operation characteristics of the optical frequency comb and the utility of the phase modulator respectively.

Key words: periodic domain inversion, optical frequency comb, quasi-velocity-matched phase modulator, Fabry–Perot resonator

^*E-mail address: ro008000@se.ritsumei.ac.jp