To provide a producing apparatus producing a balanced optical frequency comb in a plurality of light waves having wavelengths different from each other.
A plurality (m) of optical waveguide parts having the same length are formed on an optical modulator substrate, a plurality of electrodes for applying a common optical phase modulation signal to the optical waveguide parts are disposed and reflection film bodies are disposed at both incident and emission ends of the optical waveguide parts, An effective refractive index of each optical waveguide part is adjusted so that a free spectral space FSR corresponding to the light wave made incident in each optical waveguide part and having a specified wavelength is an integer multiple of not less than one time of the minimum value thereof and the light wave made incident in each optical waveguide part is modulated and going back and forth between the incident and emission end reflection film bodies to produce the balanced multiple wavelength optical frequency comb.
HIKUMA KAORU
MORI SHINGO
ICHIKAWA JUNICHIRO
SUMITOMO OSAKA CEMENT CO LTD
Takashi Ishida
Kazuyuki Nishidate
Tetsuji Koga
Masaya Nishiyama