| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an optical pulse generator in which a driving is made with an arbitrary modulation frequency within a modulation band, the chirping characteristic of an optical pulse is controlled, the pulse width is made independent against an operating wavelength and carrier suppressed optical pulses are generated. SOLUTION: The generator is provided with a light source 1, which outputs optical carrier, an optical intensity modulator 2, in which a transmissive characteristic has a periodic response of an even function centered around an operating bias point against driving signals and the optical carrier is intensity modulated by the driving signals, a driving means 3 which outputs electric signals having an amplitude 2Vπcorresponding to two periods of the transmissive characteristic of the modulator 2 and a frequency f, and a bias controlling means 4 which controls the operating bias point of the driving signals of the modulator 2. Thus, the modulator 2 outputs optical pulses each having a repetitive frequency 2f.</p> |
