Polarization-insensitive optical switch and multiplexing...

Details Polarization-insensitive optical switch and multiplexing... Polarization-insensitive optical switch and multiplexing...

H - Electricity

04

J

345/60, 363/1.5

H04J 1/02 (2006.01) G02F 1/31 (2006.01) G02F 1/03 (2006.01)

Patent

CA 1208379

POLARIZATION-INSENSITIVE OPTICAL SWITCH AND MULTIPLEXING APPARATUS Abstract of the Disclosure Polarization-insensitive optical switch and dual channel carrier multiplexer includes a polarization beam splitter for receiving an input collimated beam which has arbitrarily polarized components, splitting the beam into the two components. One of the components is rotated by a 1/2 wave plate so as to yield a polarized beam which is polarized in the same direction as the other beam. The two polarized beams are then applied to a polarization sensitive interferometric multimode fiber optic switch and modulator. The output of the interferometric multi- mode fiber optic switch and modulator contains two beams, both polarized in the same direction. One of the beams is rotated ninety degrees by a 1/2 wave plate, and the two mutually perpendicularly polarized beams are then recom- bined by a polarization beam splitter operated in reverse to yield an output beam containing mutually perpendicular components.

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