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)

5.4.1.5.3 Single fiber terminations . There are two Navy standard terminations that can be used, MIL-C-83522/16 (ST style) connectors and

MIL-S-24623/4 (rotary mechanical) splices. The type of termination used on the trunk and local fibers should be determined from the system specification or system drawings. If there is no specific requirement for a termination type, either type may be used if the system link loss budget can be met using the selected termination type. The MIL-C-83522/16 connector and the

MIL-S-24623/4 splice should not be installed externally to equipment or enclosures.

5.4.1.5.4 Multifiber terminations . The multifiber termination is used for direct connection of local cables to the system equipment. The termination on the local cable should be compatible with and mate with the connector on the

end user equipment. The Navy standard MIL-C-28876 multifiber connector should be used for all multifiber terminations. Navy approved MIL-T-29504/14 termini should be used within the MIL-C-28876 connector.

5.4.1.5.5 Interconnection boxes . The Navy standard MIL-I-24728 interconnection box should be used.

5.4.1.6 Installation and test . The FOCT should be installed and tested in accordance with MIL-STD-2042.

5.4.2 Detailed design documentation . The output of the detailed design phase is the documentation necessary to install the FOCT. This documentation includes:

- Fiber run lists (or CIIDS)

- Cable pull charts

- Interconnection box configuration drawings

- Detailed parts lists

- Cable block diagrams

5.4.2.1 Fiber run lists . The fiber run list should provide the end-to-end connections for each fiber. Each fiber should be designated by a unique fiber number and have the appropriate system identification included in the fiber

run list. The fibers should be numbered in accordance with the ship specification. The fiber function (normal, alternate, NRC, redundant, spare, or growth) should also be identified on the fiber run list. This information may be included on the FOCT design configuration and interconnection box configuration drawings rather than as a separate fiber run list.

5.4.2.2 Cable pull charts . The cable pull chart should provide the detailed routing information for each cable. Each cable should be designated by a unique cable number. The cables should be numbered in accordance with ship specification.

5.4.2.3 Interconnection box configuration drawings . Interconnection box configuration drawings should identify the interconnect requirements between local and trunk fibers. The type of termination for each fiber and the

location of that termination should be identified.

5.4.2.4 Detailed parts list . A detailed parts list should be generated identifying all of the components required. The list should include the Navy standard specification and quantity required for each type of component identified in the cable FOCT detail design.