Optical multiplexing/demultiplexing device having a wavelength d

Details Optical multiplexing/demultiplexing device having a wavelength d Optical multiplexing/demultiplexing device having a wavelength d

1997-11-24

2000-10-17

Ngo, Hung N.

Optical waveguides

With optical coupler

Input/output coupler

385 25, 385 37, 385119, G02B 632

Patent

active

061343595

ABSTRACT:
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.

REFERENCES:
patent: 4626066 (1986-12-01), Levinson
patent: 5305402 (1994-04-01), Hill et al.

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