Polarization-insensitive optical multiplexing apparatus

Details Polarization-insensitive optical multiplexing apparatus Polarization-insensitive optical multiplexing apparatus

H - Electricity

04

J

345/56, 363/1.5

H04J 1/02 (2006.01)

Patent

CA 1223984

POLARIZATION-INSENSITIVE OPTICAL MULTIPLEXING APPARATUS Abstract of the Disclosure Polarization-insensitive optical multiplexing appar- atus for independently modulating perpendicularly polarized components of a collimated input beam includes a polarization beam splitter for receiving an input collimated beam which has arbitrarily polarized components, splitting the beam in- to 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 sen- sitive interferometric multimode fiber optic switch and mod- ulator. The output of the interferometric multimode 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 perpendi- cularly polarized beams are then recombined by a polariza- tion beam splitter operated in reverse to yield an output beam containing mutually perpendicular components.

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