| 摘要 |
<p>An optical signal processing device has a nonlinear optical medium (31) and a polarization controller (42). To the nonlinear optical medium (31), signal light (E sin ) and a first pumping light having (E p ) having a wavelength different from the signal light is input by means of a polarization beam spiltter (41). The nonlinear optical medium is connected between two ports of the polarization beam splitter so as to form a loop. The polarization controller (42) is provided at the input side of the nonlinear optical medium (31) and adjusts the pumping light so that the pumping light is split by the polarization beam splitter into two mutually orthogonal, linearly polarized components having equal powers.</p> |
