Section 10 - FIBER OPTIC TECHNOLOGY
- 10.1.1 GENERAL
Every effort was made to
ensure that the information in this document was complete and
accurate at the time of printing. However, technology is ever
changing, becoming more efficient and effective and is subject to
change. All fiber optic planning, installation and specifications
shall be approved in advance by Telecommunications Center. All
cable that is to be connected or disconnected from the campus
telecommunications network such as telephone, data, video, and
fiber optics, shall be done by Telecommunications Center or its
The cable shall be new, unused, and of
current design and manufacture. Contact Telecommunications Center
for the type of fiber optic cable to be used.
- 10.2.1 GENERAL
All new outside plant conduit
shall include at least two (2) multi-cell conduits. Proper parts
are to be used, consult Telecommunications Center. Innerducts are
only used on existing facilities.
Direct burial of
fiber optic cable is not allowed.
When installing fiber
optic cable in ductwork and manholes between buildings, there
shall be a minimum of one complete loop, minimum of 20 feet in
length, in the manhole and it shall be pulled in a protective
liner inside the manhole to prevent damage to the cable.
All fiber optic cables shall be terminated via a ST
connector and properly connected to the distribution panel
utilizing a cable end kit for each cable and an end kit for each
tube. There shall be a 20 foot service loop at all splice
locations and fiber patch panel locations. Fiber cable metallic
sheath or strength member shall be grounded to proper ground.
When installing fiber optic cable, in existing conduit
which is not Multi-Cell or does not contain flow duct, it shall be
pulled in a protective inner liner, minimum 3/4 inch inside
diameter. When placed in a cable tray or on a runway where there
is the possibility of someone standing, walking or sitting on the
cable, it shall be placed inside a protective liner. When a floor
trench is utilized (Walker type or equivalent) one chamber will be
used exclusively for the fiber.
All cable placed along
runways, relay racks and distribution shelves shall comply with
the manufacturer’s minimum bend radius requirements for that
particular type cable. When cable is secured by tiewrap or other
fasteners they shall not be pulled so tight at any point that the
cable jacket is crushed flat or indented.
on verticals of relay racks to accommodate the fiber cable on the
backside and the fiber patch cords to the front of racks.
Jumper or patch cords are to be used to connect
different fibers together for continuation of service. Do not wrap
a jumper completely around a routing guide or other type bracket.
When using routing guides on a relay rack always use the rear
portion of the guides to hold vertical jumper runs and the front
portion of the guides to hold horizontal jumpers. Always use the
front routing guide to enter or leave a housing.
should be a minimum of 20 ft. slack left in a terminal room,
mounted in a circular configuration on fire rated plywood (3/4
in.). This is necessary in the event of a fiber break.
All fiber strands shall be terminated in accordance
with the industry standard color codes.
Label all fiber
cable and all fiber strands at termination locations.
Telecommunications Center will provide fiber cable nomenclature.
Test all strands using an optical time domain
reflectometer (OTDR) and optical loss test sets (OLTS). Fiber
cable runs less than 100 meters in length shall be tested with an
approved light meter. Provide computer readable test results of
each fiber strand to Telecommunications Center. See Section 6. for
additional testing information.
- 10.3.1 QUALITIES
For exact specifications
contact Telecommunications Center.
All fibers in the
cable must be usable fibers, meet required specifications and be
terminated and tested by the installing contractor or ITCS
All optical fibers shall be sufficiently
free of surface imperfections and inclusions to meet the optical,
mechanical and environmental requirements of this specification.
The fiber(s), whether outside plant or building
riser(s), are multimode and singlemode cable consisting of XXX or
more multimode and XXX or more singlemode fibers. This fiber cable
meets or exceeds the following minimum specifications:
- 62.5/125 micron multimode fiber
- End-to-end attenuation
- 3.75 db @ 160 Mhz @ 1310 Nm per kilometer
- 1.50 db @ 500 Mhz @ 1300 Nm per kilometer
- Singlemode fiber
- .5 db @ 1310 Nm per kilometer
- .4 db @ 1550 Nm per kilometer