| 摘要 |
PURPOSE:To attain the matching of phases of a data of a different wavelength from even that of a high speed data with an optical receiver by using a guide path of refractive index variable type. CONSTITUTION:One of output clocks of optical reception sections 500-1-500-n is used as a reference clock, it is fed to one input terminal of phase comparators 950-1-950-(n-1), and a clock being an output of other (n-1) sets of the optical reception sections is fed to the other input, the phase of the both is compared and a voltage corresponding to the phase difference is outputted. The output voltage is fed respectively to the refractive index variable type waveguide paths 900-1-900-(n-1) to vary the phase of the optical signal data of the output and the phase of the clocks being the outputs of the (n-1) sets of the optical reception sections is matched with the phase of the reference clock. Thus, the phase of the data of the different wavelength even in the high speed data is matched with a circuit whose size is made small in the optical receiver. |
