| 摘要 |
<p>The frequency of an optical signal output from a optical source (12) is controlled while maintaining the polarization of the signal by guiding the signal with either a polarization maintaining optical (17) fiber or an integrated optics waveguide. A portion of the signal output from the light source is input to the light guiding structrure. The optical signals are phase modulated (25), and an electrical signal indicative of the intensity of an optical output from the polarization maintaining light guiding device is applied to the optical source for controlling the frequency of the optical signal output therefrom.</p> |
