ODN Network

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The Optical Data Network (ODN) is a system of fiber optic cables used to transfer data between the various ship systems and control panels and the computer systems. Data is transferred through the ODN via light pulses. This method allows for data transfer at the speed of light.

Each optical cable strand is composed of three different layers the core, the cladding and the jacket. The inner core is composed of monocrystal microfibers. The cladding layer is a coat of non-reflective polyamide coating. The cladding layer acts as a protective layer for the core and also ensures that light pulses used to transmit data through the ODN remains contained within the core via reflection of photons back toward the center of the core. The jacket layer is a layer of high impact polymer and protects the core and cladding from impacts and abrasions.

The larger cable sizes are composed of multiple strands bound together in a second jacket layer of high impact polymer. The larger cables can be composed of up to a thousand different optical strands. The larger cables are used in the main ODN trunks that connect the computer cores together along with connecting the computer cores to the main bridge and the subprocessors throughout the ships structure. Secondary ODN trunks provide linkages to key systems and work stations.

Throughout the ODN are Optical relays. The relays serve two functions within the ODN network. The primary function is to ensure that the data is routed to the proper devise connected to the network. The second is to strengthen the light pulses. While the cable's core and jacket layers are designed to minimize signal loss there will still be loss due to photon absorption into the jacketing layer. Each relay is controlled by a bank of four isolinear chips.