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Fiber Closure - Basic Closure

  • April 10, 2019 2:47 AM EDT


    Fiber Closure - Basic Closure


    As you know, greentelftth is a professional Fiber Closure manufacturer that offers high quality and different types of closures. So before you buy, you need to know the type of Fiber Closure.

    Basic closure

    At its simplest, a closure connects a length of fiber optic cable to a cable of the same type of different length. This is sometimes referred to as an online closure or a track connection. The added functionality is provided by a branch (or branch) connector that divides the cable into two ongoing sections - the main cable and the side or branch cable. There is also the end of the path closure where the cable is broken down into separate components for customer or telecommunications connections.

    The earliest fiber closures were direct descendants of their copper cousins. The simplest structure (but not used!) is a wraparound heat shrink product that is usually only closed in the wire, but sometimes it is a branch joint. Although they are waterproof, they have little other benefit than low cost and often require skilled connections to apply them.

    Tube dispensing closure

    With the widespread adoption of blown fiber and cable systems using multiple microtubule bundles, tube dispensing closures have become commonplace. As the name implies, these can create an online mini-track joint or, more commonly, branch each microtube to a different destination. Instead of the fiber connections occurring in the closure, the individual microtubes are connected together by a dedicated push-fit connector, which itself is designed to be waterproof. This allows the closure to have a simple design without the need for expensive seals and easy assembly on site.

    Dome fiber optic closure

    Perhaps the most common type of closure is now a "dome" closure that includes a base with a cable port inlet, a stack of splice trays, and a detachable dome. The advantage is:

    The format is easily sealed to IP68, but the dome can be removed in seconds to re-enter.

    Many basic configurations can be produced in the same overall footprint

    By using different domes, the closure can be expanded to add more splice trays.

    However, having a sturdy casing is only half the challenge. Another 50% is the inclusion and organization of fiber-to-fiber connectivity. Typically, fiber optic cables consist of cable "elements" (usually loose tubes or strips). Thus the 144 fiber cable includes 12 12 fiber ribbons or 12 12 fiber loose tubes. Thus, the "single component" splice tray accommodates the fibers of the entire cable element. This arrangement is well suited for online (track) closure. Storage of fiber is for long-term survival, and it is not expected that closure is an intentional intervention point. However, for branches (spurs), it is usually intentionally repeated to close to add, subtract, or reroute individual circuits. It is then beneficial to store a "single circuit" on a splice tray. This method allows you to connect individual customers without interfering with existing circuits.

    Maybe you can tell us what you need and we will recommend the right fiber seal as soon as possible.