Filter
Top Products
Chapter 2--Operation 17
X-Y Fiber Adapter
The universal XY fiber adapter allows an optical fiber which is terminated in a 10mm ferrule, SMA connector or
FC connector to be positioned horizontally and vertically over a 5mm range in each direction to correctly position
the end of the fiber on the center of the slit or optical axis.
Tools:
1/16” hex wrench
9/64” hex wrench
Procedure:
1. If using an optical fiber with a 10mm ferrule at the input of the LS 785, use a 1/16” hex wrench to loosen
the set screw in the XY adapter barrel. Slide the 10mm adapter insert into the barrel of the XY adapter
and re-tighten the set screw. Loosen the set screw in the XY adapter insert using a 1/16” hex wrench.
The picture below shows the fiber inserted into the 10mm adapter insert for illustration purposes only.
Normally, the adapter insert is first inserted into the XY adapter barrel before installing the fiber.
Figure 2-13. 10 mm Insert with Fiber
2. Insert the fiber with the 10mm ferrule into the XY adapter insert and carefully slide the fiber in until it
just touches the slits and then back it out a very short distance until it is no longer touching the slits.
NOTE: Do not force the fiber against the slit blades.
3. If the fiber assembly is a single fiber in the center of the ferrule, then secure the fiber in position by
tightening the set screw in the top of the XY adapter barrel as shown in the photograph. If fiber assembly
has a vertical array of fibers in the 10mm ferrule, set the vertical position of the fiber by aligning the mark
on top of the fiber barrel with the set screw in the top of the XY adapter barrel. The vertical alignment
may be fine tuned later by observing an image of fibers on the CCD.
4. If using an optical fiber terminated in an SMA or FC adapter, use the appropriate adapter insert as shown
below and screw fiber coupling into the XY adapter insert. Loosen the set screw in the XY adapter barrel
and slide the XY adapter insert into the barrel. Carefully slide the adapter insert into the barrel until the
end of the fiber just touches the slits and then back it out a very short distance until the fiber is no longer
touching the slits.
NOTE: Do not force the fiber against the slit blades.
Figure 2-14. SMA Insert with Fiber
Figure 2-15. FC Insert with Fiber