Cleaning Fiber-Optic Connectors - Juniper BTI7800 Series Hardware Overview And Installation Manual

BTI7800 Series Hardware Overview and Installation Guide

Cleaning Fiber-Optic Connectors

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The primary hazard of exposure to laser radiation from an optical fiber communications
system is damage to the eye by accidental exposure to the beam emitted by a laser
source, or from viewing a connector attached to an energized fiber.
Before using an optical scope to examine the fiber, ensure that optical power is not
emitted from the fiber. Use of a handheld optical fiber scope (that is, where the output
is sent to a video display) prevents accidental exposure to the beam emitted by a laser
source.
Keep all interconnects as clean as possible. When cleaning fiber connectors, be sure to
use appropriate cleaning methods.
Use this procedure to clean a fiber connector.
NOTE: Improper cleaning can result in high attenuation due to dirt or dust,
or can cause mechanical damage to the fiber end face, resulting in decreased
performance.
Verify that the opposite end of the fiber is disconnected from its laser source.
1.
Using an optical fiber scope, inspect the end of the fiber face.
2.
If the fiber end-face condition is ideal, no further action is required.
3.
If you need to clean or repolish the fiber end-face, use the instructions in the cleaning
procedure that follows.
Use a new, lint-free, nonabrasive cleaning pad, lens paper, or swab to clean the fiber
4.
end. Move the cleaning pad back and forth across the fiber end several times. If using
a swab, gently rotate the swab as you wipe across the end-face. When done, discard
the used pad or paper.
Obtain a filtered, dry, compressed air dust remover. Aim the duster at a shallow angle
5.
to the fiber end-face and blow across the connector end face from a distance of 6 to
8 inches.
Verify that the opposite end of the fiber is still disconnected from its laser source.
6.
Verify that the fiber-optic connector is free from dirt and dust. To inspect the connector,
7.
use an optical fiber scope that uses an indirect image converter or a filtered optical
instrument of optical density (OD) sufficient to reduce the exposure levels below the
appropriate maximum permissible exposure.
Do one of the following:
8.
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