An Optical Transceiver Module with High Coupling Efficiency

Abstract

The invention belongs to the field of optoelectronic technology, in particular to an optical transceiver module with high coupling efficiency. The optical transceiver module includes an upper box board, a lower box board, and a DIN-type interface laser; a part of the DIN-type interface laser is installed on the upper box board In the cavity formed with the lower box plate, the other part extends out of the cavity; the DIN-type interface laser includes a DIN-type interface, a first sleeve, a second sleeve, a third sleeve, a ceramic core and a laser; the third The sleeve, the second sleeve and the first sleeve are sleeved in sequence; the ceramic core is sleeved inside the first sleeve, the second sleeve and the third sleeve, and the laser is located behind the ceramic core. The invention adopts multi-stage sleeves, and uses epoxy glue to reinforce the sleeves, so that the stress of high temperature deformation is released to the non-rigid connection between the laser and the circuit board through transmission, so as to avoid the external temperature affecting the optical transmission and reception. The influence of the output optical power of the module ensures that the output optical power remains stable within a certain temperature range.

Description

technical field [0001] The invention belongs to the field of optoelectronic technology, in particular to an optical transceiver module with high coupling efficiency. Background technique [0002] The dual-fiber bidirectional surface-mount optical transceiver module is a transceiver-integrated optical module for high-speed data transmission. The maximum rate can reach 4.25Gbps. It has high requirements on the stability of the output optical power of the transmitter. The structure is as follows: figure 1 As shown, its working principle is: the external data signal is loaded to the laser of the DIN interface through the driver on the circuit board, and the electrical signal is converted into an optical signal at this time, and the optical signal enters the fiber core of the ceramic core through the light-emitting area of ​​the laser. After the external single-mode fiber is inserted into the DIN interface laser, it couples and aligns with the ceramic core through the alignment a...

AI Technical Summary

Problems solved by technology

[0005] Therefore, our company releases the deformation stress through the laser spot welding of the first sleeve 11 and the second sleeve 12, such as figure 2 As shown, however, since the inside of the first sleeve 11 and the second sleeve 12 are C-shaped rings and ceramic cores, the release of deformation stress here will lead to deformation and displacement of the C-shaped rings and ceramic cores, resulting in reduced fiber coupling efficiency, The output optical power decreases, affecting the transmission of optical signals

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