Single fiber bi-directional optical element and assembly method thereof

Abstract

The embodiment of the invention discloses a single fiber bi-directional optical element and an assembly method thereof. The single fiber bi-directional optical element comprises a tube socket, wherein a base is fixed on the tube socket; a filter and a laser are fixed on the base; a photoelectric conversion device fixed on the tube socket is arranged below the base and corresponds to the filter; a ray transmitting hole is formed on the base and between the filter and the photoelectric conversion device; and rays emitted by the laser and rays received by the photoelectric conversion device coincide at the incidence point on the filter. The single fiber bi-directional optical element and the assembly method thereof have the advantages that the encapsulation efficiency is high and the large-batch production is facilitated.

Description

technical field [0001] The invention relates to the field of optical network devices, in particular to a single-fiber bidirectional optical component and a packaging method thereof. Background technique [0002] With the evolution of fiber-to-copper networks, FTTX (Fiber To The X) has become the mainstream technology for access networks. At present, the main method of FTTX is PON (Passive Optical Network, Passive Optical Network), and the key photoelectric modules of PON access equipment are ONU (Optical Network Unit, Optical Network Unit) and OLT (Optical Line Terminal, Optical Line Terminal). Among them, ONU is a module placed directly on the user side, which is extremely sensitive to cost. In ONU and OLT, about 70% of the total cost is BOSA (BI-Direction Optical Sub-Assembly, single-fiber bidirectional optical component) optical device. [0003] The structure and packaging process of the traditional BOSA determine that the manufacturing cost of the BOSA is relatively hig...

AI Technical Summary

Problems solved by technology

The packaging method of the above-mentioned BOSA determines that it cannot be placed by automatic placement equipment. This is because the current automatic placement equipment must first identify the target position where the material is placed, and then identify the alignment position of the material, and use the manipulator to place the material. Move the alignment position to the target position

In the BOSA device of the above-mentioned traditional structure, the target position is the center of the receiving area of ​​PD 12, which can be identified; while the alignment position of filter 16 cannot be identified, because the alignment position of filter 16 is in addition to the filter 16 itself It is related to LD 14, so the automatic alignment method of automatic film lifting equipment cannot align the optical paths of LD 14 and PD 12, and can only rely on human eyes to judge the alignment position through CCD imaging, so the production efficiency is very low , the cost is high, so it cannot be mass-produced

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