Patent ID: 7706649

Claim:
An optical processing device comprising: a light source that outputs a pulse of second light having a first polarization state or a second polarization state in synchronization with pulse timing of a pulse of first light, the second polarization state being different from the first polarization state; a first nonlinear medium that receives the first light pulse and the second light pulse from the light source, and controls a polarization state of the first light pulse in accordance with a polarization state of the second light pulse, using a nonlinear effect; and a separator that outputs the first light pulse from the first nonlinear medium selectively to a first output path or a second output path in accordance with the polarization state controlled by the first nonlinear medium, wherein the first nonlinear medium uses the nonlinear effect to compensate a level of each first light pulse output selectively to the first output path or the second output path by the separator, the level of each first light pulse receiving energy of the second light pulse, and the light source comprises: a clock light source that outputs an optical clock that is substantially in synchronization with the first light pulse; a polarization-state selecting light source that outputs polarization-state selecting light having a pulse rise in synchronization with pulse timing for selecting one of the first and second polarization states among clock pulses of the optical clock; and a second nonlinear medium that receives the optical clock from the clock light source and the polarization-state selecting light from the polarization-state selecting light source, and outputs an optical clock as the second light pulse having a clock pulse of one of the first and second polarization states, using a nonlinear effect.