G - Physics – 02 – B
Patent
G - Physics
02
B
88/117, 88/97.5
G02B 1/08 (2006.01) G02B 5/30 (2006.01) G02B 27/28 (2006.01) G02F 1/035 (2006.01) G02F 1/313 (2006.01) H04J 14/02 (2006.01) G02F 1/01 (2006.01)
Patent
CA 1176093
- 14 - TUNABLE POLARIZATION INDEPENDENT WAVELENGTH FILTER Abstract Tunable, polarization independent wavelength filtering is obtained in a circuit configuration comprising an input polarization selective coupler which separates the TM and TE mode waves. A first, wavelength selective mode converter, in the TE mode wavepath, converts the TE mode wave energy at the selected wavelength to the TM mode. Similarly, a second wavelength selective mode converter, located in the TM mode wavepath, converts the TM mode wave energy at the selected wavelength to the TE mode. An output polarization selective coupler combines the TE and TM mode wave energy at the selected wavelength in one output wavepath and combines the balance of the input signal in a second wavepath. By cascading a plurality of such circuits, each tuned to a different wavelength, a wavelength multiplexed signal can be demultiplexed.
396780
Kirby Eades Gale Baker
Western Electric Company Incorporated
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