Research Of Laser Welding Technology Of Laser Devices

The light device is the core of optical fiber communication equipment, at the sametime it is also the core part of optical transceiver module assembly, optical moduleperformance and capacity and rate also depends entirely on the optical device.In this paper, ordinary optical device as the object of study, analysis of the basicfeatures of laser welding and laser materials and the role of the process, according to thespecial shaper of welding materials and internal performance requirements, the use of laserdeep penetration, heat conduction welding and other related theories to material the laserunder the action of heat transfer theory, the choice of laser heat conduction welding, detaillaser thermal conduction welding mechanism, derive the laser thermal conductivity soldermelting wave front of the maximum penetration depth and the weld surface of the laserpower density is calculated.During the experiment, according to the principle of laser welding machineprocessing technology to optical devices (laser) as test material, combined withexperiments to study the effect of laser spot welding of the main parameters, includingpower density, pulse shape, pulse width, welding speed, pulse frequency, defocus amountand so on. In the analysis of these key parameters, draw an important conclusion: the laserwelding process parameters are interrelated and interact, there is not an independentparameter.The main research contents are as follows：The first：access to domestic and foreign-related literature, analysis of the basicfeatures of laser welding and laser materials and the role of the process, derive the laserthermal conductivity solder melting wave front of the maximum penetration depth and theweld surface of the laser power density is calculated.Second：Through the microscope apparatus for inspecting optical device weldingeffect. Spot welding spot, complete bright, round, slightly concave middle, analysis in thepresence of specific causes of weld defects.Third：Analysis of laser welding defects are the main cause of. Laser welding process parameters unreasonable is produced by laser welding defects are the main cause of.Last：The qualified welding optical devices (light-current-voltage) test, the test oflaser welding on optical devices have different internal performance.This study has yielded some results, these welding theory and experimental dataanalysis, the design for the laser welding machine, manufacture, use was provide. However,limited to the time, there should not be hardening materials near the solder joint bending,minor cracks occurring at the individual joints of the deficiencies. In future studies, theresearch will be more subtle.