Four-way optical path structure compatible with 10G GPON and GPON

Abstract

The invention provides a four-way optical path structure compatible with 10G GPON and GPON, wherein the four-way optical path structure comprises an optical fiber ferrule, a 22-degree combined filter piece, a first 45-degree filter piece, a secondary focusing assembly, a second 45-degree filter piece and a 10G GPON emitted light focusing assembly which are sequentially arranged from left to right, and the 10G GPON received light focusing assembly is arranged at the bottom of the 22-degree combined filter piece. A GPON receiving light focusing assembly is arranged above the first 45-degree filter piece, a GPON emitting light focusing assembly is arranged at the bottom of the second 45-degree filter piece, the 22-degree combined filter piece is of a V-shaped structure, an opening of the 22-degree combined filter faces downwards, the opening angle is 45 degrees, and the included angle between the side, away from the optical fiber insertion core, of the 22-degree combined filter and the horizontal plane is 68 degrees; the 22-degree filter piece with an integrated structure is used, so that the structure is more compact, the requirements of SFP + size packaging and miniaturization can be met, a second lens in related technologies is removed, the coupling efficiency is higher, and the production cost is saved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a four-way optical path structure compatible with 10G GPON and GPON. Background technique [0002] In recent years, with the increase of transmission content in the market, people have higher and higher requirements on the transmission rate on the access network. At present, a large number of 2.5G GPON speeds in the market cannot meet the transmission rate requirements, which requires the access network to be from 2.5G GPON is upgraded to 10G GPON. When GPON is upgraded to 10G GPON, operators need to consider various requirements, including reuse of existing resources, rapid deployment, and forward and backward compatibility, which requires the emergence of Combo PON. [0003] As the name suggests, Combo means a consortium. Combo PON is a consortium of GPON and 10G GPON. It uses two technologies to adopt different bearer wavelengths, and combines the two wavelengths in one ...

AI Technical Summary

Problems solved by technology

[0004] In the related technology, the application date is 2017.03.31, and the application number is 201710208342.6, which discloses a four-way optoelectronic device compatible with GPON and 10GPON. Although it can basically solve the functional problem, due to the existence of the second lens a1 The coupling efficiency is low. The lower part of the first vertical optical channel a2 is provided with a 32-degree optical filter a3. Correspondingly, the horizontal optical channel a5 is provided with a 13-degree optical filter a4, and then the light with a wavelength of 1260-1280 entering through the optical fiber channel It can be reflected to the 32-degree filter a3 through the 13-degree filter a4 and then reflected to the 10GPON receiving end. Both the 13-degree filter a4 and the 32-degree filter a3 are set obliquely, resulting in difficulty in processing. Moreover, the two are set separately, which leads to the scattered arrangement of optical devices and makes the product size longer. It is difficult to package the SFP+ size.

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