Abstract

Deep electro-optic phase modulation at a high frequency is useful in many fields such as ultrashort pulse generation and shaping, spectroscopy, frequency comb generation, and so on.¹-³ In microwave range over a ten gigahertz, however, deep modulation is difficult because of velocity mismatch between modulation wave and light. To solve the problem, we have proposed an electro-optic modulator with periodic domain inversion for quasi velocity matching at a microwave frequency.⁴ Here we report the experimental results of extremely deep phase modulation with a long phase modulator and the application of the wide sidebands to optical pulse generation.

© 1995 IEEE