Planar waveguide structure with polarization compensation

Details Planar waveguide structure with polarization compensation Planar waveguide structure with polarization compensation

2006-03-28

2006-03-28

Healy, Brian (Department: 2883)

Optical waveguides

Planar optical waveguide

C385S011000, C385S130000, C385S131000, C385S132000, C385S014000

Reexamination Certificate

active

07020371

ABSTRACT:
A design for a polarization independent ridge waveguide structure is shown. The inventive waveguide structure features discontinuous trenches formed on either side of the waveguide in which the waveguide has a first polarization characteristic absent the trenches and a second polarization characteristic when the trenches are present. The length of the trenches and the distance between the trenches are chosen to provide a desired amount of attenuation to each of the TE and TM modes. Additionally, this method is used to cause a predetermined polarization in order to compensate for the polarization of another optical component.

REFERENCES:
patent: 6408112 (2002-06-01), Bartels
Popovic et al., “Air Trenches for Sharp Silica Waveguide Bends”, Journal of Lightwave Technology, vol. 20, No. 9, Sep. 2002.
Seo, “Low Transition Losses in Bent Rib Waveguides”, Journal of Lightwave Technology, vol. 14, No. 14, Oct. 1996.

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