Refractive index grating, and mode coupler having a...

Details Refractive index grating, and mode coupler having a... Refractive index grating, and mode coupler having a...

2005-12-13

2005-12-13

Font, Frank G. (Department: 2883)

Optical waveguides

With optical coupler

Input/output coupler

C385S129000

Reexamination Certificate

active

06975795

ABSTRACT:
A refractive index grating has at least one configuration of heating elements on or adjacent to a wave-guiding structure. Regions are introduced into the wave-guiding structure and/or into an adjoining substrate, which regions have a higher thermo-optical coefficient or a lower thermal conductivity compared to the wave-guiding structure or the substrate. Substantially each heating element is assigned at least one of the regions with a higher thermo-optical coefficient and/or at least one region with a lower thermal conductivity. There is also provided a mode coupler with a refractive index grating of this type.

REFERENCES:
patent: 6671439 (2003-12-01), Dieckroger
patent: 6823094 (2004-11-01), Goh et al.
patent: 2002/0025120 (2002-02-01), Dieckroger
patent: 2003/0138209 (2003-07-01), Chan
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patent: 1 193 515 (2002-04-01), None
patent: 00/52519 (2000-09-01), None
patent: 02/44777 (2002-06-01), None

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