Locating module for optical fibre array

Abstract

A locating module as passive device for optical fibre array is composed of upper and lower substrates and optical fibres between said substrates. One or both of two substrates have the etched slots on their surfaces. The width of slot is less than the diameter of optical fibre core. The etched depth is greater than the height of arc segment of said core in the slot. It can eliminate the influence of different non-uniform factors on locating optical fibres. Its advantages are high locating precision, efficiency, rate of finished products and optical performance.

Description

technical field [0001] The invention belongs to passive devices in the optical communication technology, in particular to an optical fiber array assembly for input or output parallel coupling interfaces of various one-dimensional or two-dimensional array devices in the optical communication. Background technique [0002] In recent years, due to the rapid development of optical communication, a large number of new active devices and passive devices used in DWDM optical communication networks have emerged. Various devices such as planar waveguide chips, micro-opto-electromechanical switch MEMS chips, and surface-emitting laser array VCSEL chips have been successfully developed. To make the above chip into a practical device, it is necessary to have a high-precision fiber array component as the input or output coupling interface of the device. Packaging technology is used to strictly and accurately align each optical path in the above chip with the corresponding optical fiber i...

AI Technical Summary

Problems solved by technology

Etching V-shaped grooves on the surface of the substrate can ensure sufficient precision in the positioning of the fiber array, but because the substrate uses a silicon wafer with a specific crystal orientation, the cost is expensive

The optical fiber is embedded in the concave groove on the surface of the substrate for positioning. The positioning accuracy of the optical fiber is related to the depth of the concave groove and the precision of the inner surface forming. The deeper the concave groove, the uniform the width between the lines on both sides of the concave groove on the substrate surface. Therefore, it is difficult to ensure the accuracy of positioning the optical fiber with the inner surface of the concave groove, and the deeper the concave groove is, the more difficult it is to ensure the precise positioning of the optical fiber

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