MIL-HDBK-2051 Fiber Optic Shipboard Cable Topology Design GuidanceThis handbook contains suggested design rules for defining a fiber optic cable topology. In addition, this document describes a suggested approach for developing and designing a fiber optic cable topology FOCT for a Naval platform and also identifies the applicable fiber optic component specifications. This handbook is primarily intended for use by the fiber optic cable topology design engineer, but provides useful information to a system design engineer as well.

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MIL-HDBK-2051(SH)

5.4.1.3   Interconnection box configuration  .  The interconnection box should be configured to provide ready access to redundant and growth fibers.  The connector module should be filled starting with the row closest to the inside

of box and working outward (see figure 6).  Normal and alternate fibers should be mounted nearest the inside of the box.  NRC fibers should be mounted next. NRC fibers terminated with connectors should be mounted on a separate row with the corresponding redundant fibers mounted in the row immediately above the

NRC fibers.  Unused adaptors should be mounted closest to the outside of the interconnection box.  For splices, the normal, alternate, NRC and redundant fibers should be separated from growth and unused splice locations (see figure

7).  NRC fibers terminated with splices should be mounted in separate trays from normal and alternate channels, with the redundant fiber located immediately next to the corresponding NRC fiber (see figure 8).

Unused

Patch panel

Allocated

Spares

Inside of box

FIGURE 6.  Patch panel configuration.

Unused

FIGURE 7.  Splice tray holder configuration.

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