THORLABS Vytran GPX4000LZ, Руководство пользователя

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GPX4000LZ Glass Processor Chapter 5: Operation
Rev I, September 15, 2021
Page 39
5.9.2 CO
2
End-Cap Head Configuration
When the user decides to set the system to be in the End-cap Head Configuration with the desired lens objective
setting and installed the proper objective on the camera tower and the correct optical head on the furnace tower,
the system is ready to be calibrated to be used for splicing end caps.
CO
2
Spot Centering Proces s
In order to ensure the fiber line is aligned with the CO
2
Laser beam axis, open the file “CO2-EndCap- 400-1250
Normalization” with the appropriate objective lens setting. Prepare Ø20 µm core, Ø400 µm LMA-GDF fiber in the
Left FHB and a Ø1250 µm glass rod in the Right FHB and run the one button process. The system will go through
the step-by-step routine of aligning and gapping the fibers and turning on the CO
2
laser to create a beam impact on
the end-face of the glass rod. Looking at the right view, it is possible to see the mark of the laser beam onto the
face of the glass rod. Open the “Spot Centering” process to click on the position of the beam impact. This will move
the position of the rod to force its geometric center to match the location of the beam impact point and therefore
aligning the fiber axis with the beam axis. After the “Spot Centering” process has moved the glass rod location, the
user needs to re-adjust the view position by running the “Fiber Centering” process in order to match the fibers
alignment location with the beam axis location. This is an iterative process and multiple attempts could be required
to achieve the best alignment. Once the process is successful, the fiber line is well aligned with the beam axis and
the system is ready to perform splices.
Execute a Splice
The user can now open the splice file he desires to execute, prepare fibers according to desired process and press
the blue "One Button Process" to execute the routine automatically based on the list of processes defined in the file
“splice process list”.
5.9.3 Filament Head Configuration
When the system is configured to operate in Filament Configuration with the desired lens objective setting and
installed the proper objective on the camera tower and the correct filament assembly on the furnace tower, the
system is ready to be calibrated to be used for splicing end caps.
Filament Centering Procedure
In the filament configuration, the first step is to ensure that the fiber line is well aligned with the filament loop. This
is done using the “Lens Filament” process that brings the filament loop in view on screen and allows the user to
adjust the position of the left fiber tip to be well centered within the filament loop by adjusting the Left FHB X and Y
positions in the movement control bar. When the position of the left fiber is well established and well centered with
the filament loop, the user will adjust the right fiber X/Y positions to match that of the left fiber. Then running the
“Fiber Centering” process in all views will ensure that the alignment positions of the fibers will match the filament
loop center.
Filament Normalization Procedure
Once the Fiber is well centered with the filament, it is time to run the “Normalization” process. This routine will
ensure the system is well calibrated for power and heating symmetry by adjusting the power offset and the View-
to-Splice distance offset. The process to run will depend on the actual filament to be used and the calibration files
delivered with the system will indicate the proper file and fibers to use for each. This is an iterative process and
multiple attempts could be required to achieve successful normalization. Once the process is successful, the system
is ready to perform splices and tapers.