| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a coherent light receiver for correcting a frequency difference between a signal light and a LO light. <P>SOLUTION: In the coherent light receiver, a local oscillating light outputting unit comprises a multiplex resonator in which plural resonators having different optical path lengths are optically connected; a plurality of resonator control units, each provided for each resonator to change a resonant wavelength of each resonator; and a supply unit for supplying a light to the multiplex resonator. A frequency control unit controls a frequency of the local oscillating light to reduce an error by controlling electric power supplied to the resonator control units. <P>COPYRIGHT: (C)2012,JPO&INPIT |
