THORLABS vytran GPX3800, Руководство пользователя

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GPX3800 and GPX3850 Glass Processors Chapter 5: Operation
Rev B, July 24, 2018 Page 43
5.7.12. Taper Tension Process
Using the software add-on, a user can automatically apply a predefined tension on a fiber (or pair of fibers) loaded
on a glass processor. This process (shown in Figure 23) requires the user to input the target tension in grams as
well as the tension tolerance (typically a value from 1 g to 2 g). The user can also specify which fiber holding
block is used to apply the tension.The parameters entered in the window are saved as a splice file and can be
included in the splice list editor to be run with standard processes. A taper tension process can be prepared
before any tapering process to ensure that the fiber is under some tension prior to tapering. Please note that the
tension monitor has to be zeroed with no load applied and the
Reset Tension button should be pressed
immediately after initializing the glass processor
.
Figure 23 Taper Tension (Left) and Tension Hold (Right) Interface Windows
Tension Hold Process
The tension hold process allows the user to apply and maintain a predefined tension value on the fiber (or pair of
fibers) after a taper process has completed. The process requires the user to input the target tension and
tolerance in grams as well as the duration of the tension hold process. The user needs to also specify which fiber
holding block to use for tension correction.
How To Set Parameters
This section outlines one method for determining the optimum taper parameters for fabricating a microtaper. The
“Minimum Power Delta Time” and “Furnace Scan Velocity” parameters are typically kept to their default values.
The “Maximum Process Time” value should be larger than the actual process time by a factor of x1.5. The
“Furnace Z Offset” parameter should be set to the same value as the “View to Splice Offset” parameter in order to
have the process begin with the centered portion of the fiber. We recommend using “Pre-Pull Delay” parameter
values of 0 s to 0.2 s for small initial diameter fibers (cladding diamters ≤500 µm) and 0.5 s to 2 s for large-
diameter fibers (cladding diameters ≥500 µm).