Polarization-independent optical wavelength selective coupler

Details Polarization-independent optical wavelength selective coupler Polarization-independent optical wavelength selective coupler

G - Physics

02

B

G02B 6/26 (2006.01) G02B 5/18 (2006.01) G02B 6/124 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2122327

- 10 - POLARIZATION-INDEPENDENT OPTICAL WAVELENGTH SELECTIVE COUPLER ABSTRACT A double-periodic grating is described for obtaining polarization-independent filtering and coupling The grating may be viewed as a combination of two gratings with slightly different grating periods. The two periods are carefully chosen to match the difference in propagation constants of the TE and TM polarization modes such that both modes are coupled at the same wavelength. A novel method of obtaining a double-periodic grating is described

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