GPX3800 and GPX3850 Glass Processors
Chapter 6: Added Capabilities of GPX3800 / GPX3850
Page 48
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The cleave properties page allows user access to cleave setup parameters. In addition, fiber holding block and
cleaver (furnace) z-axis offset values can be entered. A negative value produces an offset to the left and a
positive value an offset to the right. When
Pull Tension on Left
remains unchecked, the tension is applied on the
right fiber holding block. Tension readings are always taken from the Analog-to-Digital Converger (ADC) opposite
to the fiber holding block applying tension.
Auto Parameter is a helper utility that automatically populates some of the cleave parameters based on just a few
requirements as shown in Figure 25.
Figure 25
Auto Parameter Utility
The auto parameter utility calculates a set of initial starting values for tension, scribe delay and (if making an
angled cleave) rotation angle.
Fiber Diameter: The fiber diameter in micrometers.
Target Cleave Angle: Desired cleave angle in degrees.
Distance Between Fiber Holding Blocks: Distance in mm between fiber holding blocks.
Fiber Modulus: Modulus of Rigidity in GPa. (Typically 28 for Silica fibers).
The user can get a good initial starting set of properties for cleaving using only fiber diameter for a flat cleave. For
angled cleaves, the target cleave angle, fiber holding block distance and fiber modulus are also required.
The GPX3800 and GPX3850 also supports sub-critical cleaving (the scribe is made while the fiber is at a lower
tension than would normally be used, then increased until the scribe fracture propagates and the fiber is cleaved).
Figure 26 shows the sub-critical cleave parameters window.
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