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Planar optical waveguide element, chromatic dispersion compensator, optical filter, optical resonator and methods for designing the element, chromatic dispersion compensator, optical filter and optical resonator
Planar optical waveguide element, chromatic dispersion compensator, optical filter, optical resonator and methods for designing the element, chromatic dispersion compensator, optical filter and optical resonator
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机译：平面光波导元件，色散补偿器，滤光器，光谐振器及其设计方法，色散补偿器，滤光器和光谐振器
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摘要
There is provided a planar optical waveguide element including a core, the core including first and second portions and a gap portion that is positioned in a center of a width direction of the core between the first and second portions so as to extend in a light waveguide direction. The gap portion has a lower refractive index than that of the first and second portions, and a single mode propagated in the waveguide element has a span crossing the first and second portions.
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