Polarization component processor, method of processing...

Details Polarization component processor, method of processing... Polarization component processor, method of processing...

2008-04-15

2010-10-26

Peace, Rhonda S (Department: 2874)

Optical waveguides

Polarization without modulation

C385S001000, C385S045000, C385S048000

Reexamination Certificate

active

07822298

ABSTRACT:
An apparatus and a method by which polarization components may be processed separately, for example, to enable a polarization beam splitter (PBS) or a switch. In one embodiment, the apparatus includes: first and second Mach-Zehnder interferometers, each Mach-Zehnder interferometer having input and output optical couplers and two internal optical arms, each optical arm connecting one output of the input optical coupler to a corresponding input of the output optical coupler, the output optical coupler of the first Mach-Zehnder interferometer being the input optical coupler of the second Mach-Zehnder interferometer, wherein the input optical coupler of the first Mach-Zehnder interferometer is configured to transmit one polarization component of the light to two of the outputs thereof and to transmit a different polarization of the light to substantially only one of the outputs thereof in response to receiving said light at an input thereof.

REFERENCES:
patent: 5526453 (1996-06-01), Wolf et al.
patent: 5719976 (1998-02-01), Henry et al.
patent: 6175668 (2001-01-01), Borrelli et al.
patent: 6643431 (2003-11-01), Hatayama et al.
patent: 2003/0081873 (2003-05-01), Tan et al.
patent: 2003/0180027 (2003-09-01), Oaknin et al.

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