:: Proper Selection of Buffer Tube Fan Out Kit in Fiber Optic Systems
This Application note provides information and guidelines for the proper selection and application of Indoor/Outdoor Buffer Tube Fan-Out kits in fiber optic systems. The following topics are examined below:
- Function of fan-out kits
- Differences in indoor and outdoor versions
- Guidelines and importance of selecting the correct kit
:: Function of Fan-out Kits
Fan-out kits are used in field and factory applications to break out and provide protection for fibers when terminating cables.
Although 250um connectors are available, directly terminating 250um fibers is not recommended due to the lack of protection to the fiber. Buffer Tube Fan-Out kits are designed to breakout the loose tube fibers from a buffer tube, and provide 900um protection to each fiber so it can be connectorized (terminated).
Corning Cable Systems offers two versions of the Buffer Tube Fan-out Kit; Indoor Buffer Tube Fan-Out Kits (FAN-BTXX-YY) and Outdoor Buffer Tube Fan-Out Kits (FAN-ODXXYY).
:: Indoor/Outdoor Versions
Indoor Buffer Tube Fan-Out kits are available in 6 and 12 fiber counts and in furcation tubing lengths of 25 and 47 inches.
Indoor kits are recommended in environments within a temperature range of 0° to +70°C (32°F to 158°F). In situations where colder temperatures are possible, the outdoor kit should be used.
Outdoor kits include additional elements that compensate for wider temperature fluctuations. Different materials and the use of epoxy in the assembly allow this kit to be used over a wider temperature range.
The outdoor version is recommended for use in environments within a temperature range of -40°C to +70°C (-40°F to 158°F). Corning Cable Systems’ Standard Recommended Procedures should be followed when installing each kit.
:: Selecting Appropriate Unicam Connectors
With proven field installable connector technology, fiber terminations using Corning Unicam Connectors are fast easy and reliable.
In addition, with UniCam Pretium Performance connectors, a broad operating temperature range of -40° to 75°C is offered, exceeding EIA/TIA 568-B.3.
With all other UniCam connectors, the temperate range is from 0° to 60° C.
:: Importance of Proper Application
When installing a fiber optic system it is important to select the correct components that will work with the conditions in which the system will operate. Failure to utilize the correct kit can affect:
- System performance/reliability
- Life of system
- Maintenance costs
- Customer service to system users
Environmental conditions play a critical role in the selection of system components. Variations in temperature can cause expansion and contraction of materials thus affecting system performance.
In order to prevent system degradation when using fan-out kits, each version has been designed for a specific environment, and it is important to know the operating range of your system when choosing your kit.
The temperature ranges above should be used as a guideline when selecting the appropriate kit for each application.