Presentation Information
[22p-13N-4]Optical frequency comb with 25-GHz repetition rate and telecommunications wavelengths
using Silicon modulators
〇Ryouyu Hirose1, Yugo Kikkawa2, Guangwei Cong3, Rai Kou3, Xuejun Xu3, Kenichi Hitachi4, Yamato Kitamura1, Yaguchi Haruki1, Noritsugu Yamamoto3, Tadashi Nishikawa2, Kouji Yamada3, Haruki Sanada4, Katsuya Oguri4, Atsushi Ishizawa1 (1.Nihon Univ, 2.Tokyo Denki Univ, 3.AIST, 4.NTT BRL)
Keywords:
Optical Frequency Comb,electro-optic modulation,Silicon Modulator
Electro-optic modulation (EO) combs are capable of generating microwaves with variable frequency and low noise. In this method, the control bandwidth of the feedback circuit limits the reduction of phase noise. To overcome this issue, we have focused on Si modulators, which can be integrated, because the optical path length of the EO comb needs to be shortened. The bandwidth of the EO comb was expanded and short optical pulses were generated by using nonlinear effects and dispersion control after the EO comb generation.