| 摘要 |
<p>An optical wavelength measuring device, comprising: a beam splitter for receiving an input light beam and splitting it into at least first and second output light beams; at least first and second photodetectors; and integrated optical waveguide device defining at least first and second waveguide structures for receiving and guiding the first and second output light beams, respectively, to the first and second photodetectors, respectively, wherein at least the first waveguide structure includes a first modulation section having a periodic transmission-wavelength function; and a signal processor for determining the wavelength of the input light beam on the basis of the signal outputs from the first and second photodetectors.</p> |
