Compact non-blocking non-dilated optical switch using mode conve

Details Compact non-blocking non-dilated optical switch using mode conve Compact non-blocking non-dilated optical switch using mode conve

1998-11-24

2000-11-21

Font, Frank G.

Optical waveguides

With optical coupler

Switch

385 16, 385 17, 385 20, G02B 626

Patent

active

061514314

ABSTRACT:
A non-blocking optical switch has a non-dilated architecture wherein dual mode input waveguides are connected to first and second inputs of mode selective couplers through mode conversion devices. Switching is effected by signals from a processing unit applied to a mode converter to convert the signal to be switched from a fundamental mode to a higher order mode. The mode selective coupler then couples the signal to one of the outputs thereof, whereas fundamental mode signals pass through to the other output thereof. An array of rows (layers) and columns of such elements make it possible to switch any incoming signal to be switched to any of a plurality of outputs after reconversion to the fundamental mode.

REFERENCES:
patent: 5761352 (1998-06-01), Kitajima et al.
patent: 5933554 (1999-08-01), Leuthold et al.
patent: 5937117 (1999-08-01), Ishida et al.
patent: 6002818 (1999-12-01), Fatehi et al.

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