5 fiber – AT&T 76450 User Manual

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Common Systems Connection Standards AT&T Services, Inc
Date: June 2013

ATT-TP-76450, Issue 15

Page 18

5 Fiber

All Fiber Optic Standards contained herein are applicable to any manufacturer’s product that
can be administered or managed by AT&T personnel. All references to SingleMode fiber shall
be considered Bend Insensitive Fiber (BIF).

5.1 Fiber Optic Mode

Fiber Optic cards, transmitters and receivers shall be SingleMode.

5.2 Fiber Optic Cable

Fiber Optic cables/jumpers/patch cords shall adhere to Telcordia Standards as defined in GR-
409, Generic Requirements for Premises Fiber Optic Cable and GR-326, Generic Requirements
for Singlemode Optical Connectors and Jumper assemblies.

5.3 Optical Cable/Jumpers & Connectors

Fiber Cross Connect Cables/Jumpers and Connectors shall be SingleMode.

5.4 Fiber Attenuators

Attenuators shall be SingleMode.

5.5 Fiber Connector Boots

Fiber connector boots shall be straight and not angled.

5.6 Fiber Minimum Bend Radius

The minimum fiber bend radius shall be 1inch or 10 times the cable diameter at any point
whichever is greater. Network equipment shall provide fiber management facilities that
maintain a minimum 1 inch bend radius from the connector until handoff to the bay or cabinet
fiber management facilities. See Figure 5-1

5.7 Maximum Fiber Connector length

The maximum fiber connector length (including boot) away from the mating connector housing
shall not exceed 2.25 inches. See Figure 5-1

5.8 Minimum Distance Between Connector Housing and 90 Degree Bend

Minimum Fiber distance away from a connector housing to bend 90 degrees shall be 3.75-
inches. See Figure 5–1.

Figure 5-1