CHAPTER 2: INSTALLATION AND SETUP
LW500A/LW600A PULSED Nd:YAG LASER
990-539 2-7
Handling Fiber Optic Cables
Minimum Bend Radius for Specified Core Diameter
Optical fibers may be damaged and become unusable when they are bent beyond their minimum bend
radius, subjected to twisting or exposed to the shock of a strong impact.
Table 1. Minimum Bend Radius for Specified Core Diameter
Core Diameter
(µm)
Minimum Bend Radius
(Inches) (mm)
300µm 7 175
400µm 7 175
600µm 10 255
800µm 12 305
1000µm 14 355
Dirt or dust on the end surfaces on the optical fiber can damage the fiber. The damaged surfaces of the
fibers can also cause contamination to adjacent lenses. To prevent contamination, do not remove the
protective rubber fiber end caps from either end of the optical fiber until it is necessary.
Optical Fiber Connection
The Laser uses high-precision optical fiber. Once the laser beam is adjusted, no further adjustment is
necessary, even if the optical fiber is removed and re-installed again.
NOTES
Make sure that the end face of the optical fiber is free of stains and/or dust. If
any dust or stains are found, blow the end face clear using a camera lens air
blower or wipe it off using lens-cleaning paper. (See Chapter 5, Section IV:
Maintenance Procedures, Cleaning Optical Parts – Optical Fiber.) Use a fiber
inspection tool (AMYA # 4-60091-01) as necessary to verify the cleanliness.
Do not over-tighten the ring on fiber plug, hand-tighten only. The laser beam
may become misaligned if the plug is too tight.
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