CLOCK RECOVERY CIRCUIT USING SEMICONDUCTOR LASER DIODE

摘要

The present invention relates to a clock extraction circuit of the semiconductor laser diode to be produced at a low cost while a high-speed signal processing is possible by using a semiconductor laser diode in the phase detection, the present invention To this end, the very expensive semiconductor laser Unlike the above-described conventional method using the amplifier, relatively employing a low-cost semiconductor laser diode, and the phase difference of the two signals using a phase dependence of the parametric amplification caused upon application of the two high-frequency signals to the semiconductor laser diode the detection, and by configuring a phase locked loop (PLL) by using this, it is possible to provide a clock extraction circuit to be manufactured at a low cost as well as can be realized a high-speed signal processing on the high frequency signal.