A v-groove substrate

Abstract

The invention provides a V-groove substrate that can be used for the input and output ends of waveguide chips, including a substrate body and one or more V-grooves on it, and the V-groove includes an input section, a connecting section and an output section . In one implementation, the V-shaped groove is made into an optical fiber array and used for the output end of the waveguide chip, and the end face of the substrate body is perpendicular to the surface; the input section of the V-shaped groove is straight and is in line with the normal line of the end face of the substrate body. A certain deflection angle; the connecting section of the V-shaped groove is arc-shaped, and its bending radius is greater than the minimum bending radius required to meet the fiber macrobending loss index; the output section of the V-shaped groove is straight; when the number of V-shaped grooves is multiple, The V-shaped grooves are arranged in parallel, and the intervals between the V-shaped grooves are equal. Compared with the traditional V-groove substrate, the deflection angle of the V-groove substrate is flexible and adjustable, the control precision is extremely high, it can be produced in batches, and the processing cost is low.

Description

technical field [0001] The invention relates to a V-groove substrate, which is mainly used in planar optical waveguide devices in the field of optical fiber communication. Background technique [0002] With the development and wide application of optical communication technology, planar optical waveguide devices are becoming more and more important. The large-scale promotion of domestic fiber-to-the-home promotes the development of planar optical waveguide devices in the direction of diversification, integration and low cost. The planar optical waveguide splitting device is one of the more critical devices in the light-to-the-home process, and one of the key devices in the splitter is the manufacture of the light array. [0003] The optical fiber arrays currently on the market have an 8-degree deflection angle, such as described in patents 02229401.5 and 201020615115.9. The realization of this angle is realized in the polishing process of the end face of the optical fiber a...

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Problems solved by technology

[0003] Currently, the optical fiber arrays on the market have an 8-degree deflection angle, such as described in patents 02229401.5 and 201020615115.9, and the realization of this angle is realized in the polishing process of the end face of the optical fiber array , not only the amount of polishing consumables is large, time-consuming and laborious, but also the change of the angle can only be realized by changing the design of the polishing fixture, the control accuracy is not high, and the flexibility is poor

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