Optical multiplexing/demultiplexing device having a...

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G - Physics

02

B

G02B 26/08 (2006.01) G02B 6/34 (2006.01) H04B 10/18 (2006.01) H04J 14/00 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2252130

A method and device for optical multiplexing or demultiplexing of optical signals. The device has a grating for dispersing an input beam into a plurality of sub-beams which are focused by a simple lens and a GRIN lens on a glass block having a plurality of waveguides embedded therein with a predetermined spacing therebetween. In order to correct for an offset in alignment, e.g. due to ambient temperature changes, between the sub-beams and the waveguides of the block, the latter is mounted to a thermally activated actuator for an controlled angular displacement which is selected to compensate for the offset.

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