| 摘要 |
<p>In order to promptly switch a wavelength of local light in conjunction with switching of a wavelength of signal light, a coherent optical receiver includes a signal light divergence unit for causing signal light to diverge to first signal light and second signal light; a local oscillation light source for generating local oscillating light (local light); an optical phase hybrid unit for causing the first signal light to interfere with the local light and outputting interference light; and a wavelength detection unit for receiving the second signal light, detecting a wavelength of the signal light on the basis of the second signal light, and thereby controlling a wavelength of the local light generated by the local oscillation light source.</p> |
