Fiber Management System - Cisco GS7000 Installation And Operation Manual

Fiber Management System

Overview
The fiber management system is made up of a fiber tray and a fiber routing track.
The fiber tray provides a convenient location to mount passive devices and store
excess fiber. The tray is hinged to allow it to move out of the way during the
insertion of the fibers and for installation or replacement of the various node
modules. The fiber routing track provides a channel for routing fiber pigtails to their
appropriate optical modules as well as a location to snap in unused fiber connectors
for storage.
The expanded fiber tray provides various clips to hold passive devices and bulkhead
adaptors neatly in the tray while providing easy access. An indexed pattern of
mounting slots in the tray allows you to install a variety of components in the tray in
various configurations. Several features are incorporated into the tray to provide
fiber protection and aid in maintaining the proper bend radius of the fiber. A sheet
of blank, stick-on, labels is also included for use in identifying the installed
components and configuration.
Quality fiber management focuses on four key areas, as follows:
Maintaining fiber bend radius

Proper fiber routing

Connectors and bulkhead access

Fiber protection

These topics are discussed in detail in the next sections.
Maintaining Fiber Bend Radius
Observe the following considerations regarding fiber bend radius:
Bent fibers can induce higher losses that can lead to signal degradation and

service disruption.
Current industry standards call for a minimum bend radius of 1.5 inches (38

mm).
Using bend insensitive fiber, as defined in ITU-T G.657.A, can allow for a smaller

bend radius. However, this does not diminish the need to control fiber bends.
The expanded fiber tray provides several guide walls for spooling and routing

fiber. Use these guides to maintain the bend radius of the fiber.

Fiber Management System

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