①Trimming the pin
When the optical device has not been trimmed, the pins are long and cannot be directly assembled (welded) on the PCBA, so this operation flow is required.
The length of the pin should be between 1/3L-1L on the PCBA welding board (L is the length of the PCBA welding board)
②Shaping the pin
After the optical device is trimmed, the width between the pins is inconsistent with the thickness of the PCB welding board (1.0mm), in order to facilitate welding and assembly, the optical device pins need to be shaped;
③Welding + ④Welding inspection
Welding TOSA/ROSA to the PCB board, and set the welding temperature of the electric welding iron at 360±10℃; when welding, pay attention to the polarity of TOSA and ROSA;
Use a magnifying glass to inspect the solder joints to prevent missing soldering or poor solder joint contact
L is the length of the PCBA welding board
⑤Assembling
There are many types of accessories, such as shell, base, pull ring, unlocking button, pressing block, press buckle, etc., and bad assembly parts cannot be assembled during assembly.
⑥Debugging
Module debugging
Debugging extinction ratio
Eye diagram
Receiving sensitivity
Optical power
Calibration DDM etc...
The equipment involved is
Computer
Eye diagram device
Optical power meter
Attenuator
Stabilized power supply
One-to-two splitter
Fiber patch cord
⑨Cleaning the end face
The cleanliness of the end face is critical to the performance of the optical module
If the end face cannot be guaranteed to be clean and free of scratches, it will be defective
⑩Locking the shell+Putting the dust-proof cap+Cleaning the modules
