摘要:
Degradation in an optical characteristic attributed to thermal stress and mechanical external force is suppressed in an optical component that a part of a waveguide type optical device is fixed to a convex portion of a mount. First and second optical device support bases (301, 302), opposed to each other, are fixed to a second waveguide type optical device (202) at clearances away from a mount (210). First and second presser support bases (311, 312) are disposed on the mount (210), and are also opposed to each other. A presser member (313) is disposed on the first and second optical device support bases (301, 302), and is fixed by the first and second presser support bases (311, 312) at clearances away from the first and second optical device support bases (301, 302). The second waveguide type optical device (202) and the first and second optical device support bases (301, 302) are not fixed to the surrounding members thereof, and are slidable in a direction parallel to the surface of the mount (210).
摘要:
An optical component is provided that is stable against temperature change in usage environment and that a first planar lightwave circuit and a second planar lightwave circuit, having different refractive indices, are butt jointed on the end surfaces thereof such that groups of multiple optical waveguides respectively formed on the planar lightwave circuits are optically coupled to each other. In an optical component (500), a first planar lightwave circuit (501) having a first refractive index n 1 and a second planar lightwave circuit (502) having a second refractive index n 2 different from the first refractive index n 1 are butt jointed on the end surfaces thereof perpendicular to an optical axis direction. First to n-th optical waveguides (where n is an integer greater than or equal to 2) are formed on each of the first and second planar lightwave circuits. The first and second planar lightwave circuits are aligned and jointed such that the position of an i-th optical waveguide (where i is an integer greater than or equal to 1 and less than or equal to n) of the first planar lightwave circuit and that of an i-th optical waveguide of the second planar lightwave circuit are matched on a joint interface. An angle Õ i formed by the i-th optical waveguide of the first planar lightwave circuit and a normal of the interface is configured to vary in accordance with a value of i within a range satisfying the Snell's law.
摘要:
A wavelength multiplexer/demultiplexer used to separate two wavelength bands disposed with the end of one wavelength band separated up to a specified distance from the end of another wavelength band. A dielectric multilayer film is provided at the intersection of two mutually-crossing optical waveguides to separate an incident light to the dielectric multilayer film into a transmission light and a reflection light. Note that the distance X from the multilayer film surface on the light incidence side of the dielectric multilayer film up to the center intersection of the above two crossing optical waveguides is set so as to satisfy 0
摘要翻译:一个波长复用器/解复用器,用于分离两个波长带,其中一个波长带的末端与另一个波长带的末端隔开一段特定距离。 在两个相互交叉的光波导交叉处设置电介质多层膜,以将入射光与电介质多层膜分离成透射光和反射光。 另外,从电介质多层膜的光入射侧的多层膜表面到上述两个交叉光波导的中心交点的距离X被设定为满足0 <= X <= d / 2(d; 电介质多层膜的厚度)。 因此,即使在两个波长具有小波长间隔和良好截止特性的情况下,也可以实现波长多路复用器/多路分离器,其没有光谱劣化。
摘要:
An optical waveguide circuit includes a plurality of waveguides with different lengths. Grooves (12) are formed in the waveguide by removing the upper cladding and the core of the waveguide (4) or by removing the upper cladding, the core and the lower cladding of the waveguide (4), and filled with a material (10) which have a refractive index temperature coefficient whose sign is different from the temperature coefficient of the effective refractive index of the waveguide. The difference between the lengths of the removed parts of the adjacent waveguides is proportional to the difference between the lengths of the remaining parts of the adjacent waveguides.