Waveguide structure

A technology of waveguide structure and strip layer, which is applied in the field of waveguide optics and integrated optics, can solve the problems affecting the optical frequency comb, it is difficult to balance low dispersion and dispersion flat, cavity resonance frequency drift, etc., to achieve flat dispersion, low dispersion, Optimizing the effect of waveguide structures

Inactive Publication Date: 2015-10-21
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

The generation of microcavity optical frequency comb requires low anomalous dispersion and flat dispersion waveguide structure, and the change of refractive index caused by thermo-optic effect will cause the resonant frequency of the cavity to drift, affecting the generation of optical frequency comb
It is difficult for the traditional wav

Method used

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Example Embodiment

[0014] The present invention provides a waveguide structure in which a substrate layer, a lower stripe layer, a slit layer and an upper stripe layer are sequentially stacked from bottom to top, wherein the lower stripe layer, the slit layer and the upper stripe layer The widths of the layers are equal, the lower strip-shaped layer and the upper strip-shaped layer are made of positive thermo-optical coefficient materials, and the slit layer is made of negative thermo-optical coefficient materials. By setting the material and size of each layer, the self-compensation of the temperature drift of the waveguide refractive index and low flat dispersion can be achieved simultaneously.

[0015] In one embodiment, the waveguide structure further includes an outer cladding layer, which is wrapped around the substrate layer, the lower strip layer, the slit layer and the upper strip layer. The outer cladding layer may be air or silicon dioxide (SiO 2 ).

[0016] In one embodiment, the widths of t

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Abstract

The invention discloses a waveguide structure, which comprises a silica substrate layer, a silicon nitride lower strip layer, a polyurethane acrylate slit layer, and a silicon nitride upper strip layer, wherein the lower strip layer, the slit layer and the upper strip layer have the same width; both the lower strip layer and the upper strip layer adopt a positive thermo-optical coefficient material; and the slit layer adopts a negative thermo-optical coefficient material. Through setting the material and the size of each layer, and the purposes of realizing waveguide refractivity temperature drift self compensation and low flattened dispersion can be achieved.

Description

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Claims

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Application Information

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Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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