| 摘要 |
<p>An optical spectrum analyzer (50) and methods for its use for multiplexing and demultiplexing. The optical spectrum analyzer includes two reflectors (60, 62) in a fixed spatial relationship to a volume phase grating (56). Input light is reflected by the first reflector to the volume phase grating (56), diffracted by the volume phase grating (56) towards the second reflector along a first optical path, reflected to the volume phase grating by the second reflector along a second optical path distinct from the first optical path, diffracted again by the volume phase grating towards the first reflector, and reflected out of the optical spectrum analyzer by the first reflector.</p> |
