THORLABS Vytran LFS4100, Руководство пользователя

Страница: 28 / 44

LFS4100 Chapter 6: Fusion Splicing
Rev B, July 24, 2018 Page 25
It is important to check the following items before beginning the splicing process:
Splice Power:
This is the amount of power the filament will receive during the splice. Check the
filament power displayed in the Splice Parameters window. To change the splice
power, select the Power box and enter the desired splice power in watts. Refer to
Table 2
for typical values.
Splice Time:
This is the length of time the filament will receive power during the splicing
process. Check the splice time displayed in the Splice Parameters window. To
change the splice time, select the On-Duration box and enter the desired splice
time in seconds. For silica-based fibers, splice times should be between 2 and 15
seconds, with 5-7 seconds typical for 125 micron fiber.
Fire Polish:
The status of the fire polish process is displayed in the Fire Polish Parameters
tab. If the power is set to zero then the fire polish is off.
Pre-Push:
This is the distance the fibers are pushed together prior to the fusion process.
Check the pre-push distance displayed in the Splice Parameters window. To
change the pre-push distance, select the Pre-Push box and enter the desired
distance in microns.
Hot Push:
This is the amount the fibers are pushed together after being pre-heated by the
filament. Check the hot push distance displayed in the Splice Parameters
window. To change the hot push distance, select the Hot Push box and enter the
desired distance in microns.
Hot Push Delay:
This is the length of time the filament will heat up before the hot push is
performed. Check the hot push delay displayed in the Splice Menu. To change
the hot push delay, select the Hot Push Delay box and enter the desired delay in
seconds. A value of 200 milliseconds is a good starting value for 125 micron
fibers.
Table 2: Typical Splice Settings
Fiber
Cladding
Diameter
125 µm 250 µm 400 µm 600 µm 1000 µm
Filament
FTAV2 FTAV4 FTAV4 FTAV5 FTAV6
Splice Power 58 W 66 W 120 W 132.5 W 190 W
Splice Time 7 s 7.5 s 8.5 s 10 s 12 s
Pre-Push
5 µm 5 µm 0 µm 0 µm 5 µm
Hot Push 14 µm 12 µm 30 µm 30 µm 40 µm
Hot Push
Delay
0.2 s 0.6 s 1 s 1.2 s 1.8 s