| 摘要 |
A system for recovering a clock from an optically encoded signal uses a mode-locked laser (4). A modulator (2) is connected in common with the laser cavity (3) of the laser and with a transmission path (1) which applies the input optically encoded signal to the modulator (2). The modulator (2) in response to the optically encoded signal modulates the phase and/or amplitude of light in the laser cavity (3) thereby locking the phase and frequency of an output pulse stream to the timing wave of the optically encoded signal. In a preferred example, the modulator is a non-linear optical modulator used for cross-phase modulation (XPM) of the light in the laser cavity. |
