Centerless single-fiber passive optical bus network system using coupler forking

Abstract

The invention discloses a centerless single-fiber passive optical bus network system using coupler forking, and belongs to the technical field of optical fiber bus networks. The device comprises an optical fiber bus, the optical fiber bus is composed of a plurality of sections of single optical fibers communicated through a plurality of three-way optical couplers, and the optical fiber bus can transmit optical signals in opposite directions at the same time and can be branched at any position; all the branches are connected with all the branched optical fiber bus branches through three-way optical couplers, so that optical signals from any branch at the branching point can be output to other branches. Provided is a centerless single-fiber passive optical bus network system having a novel bus topology so as to enable communication using a high-speed and flexible optical fiber bus in an occasion where a network needs to be dynamically extended and extended.

Description

technical field [0001] The invention belongs to the field of optical fiber bus network technology, in particular to a centerless single-fiber passive optical bus network system using a coupler fork. Background technique [0002] At present, the topologies of the known optical fiber bus networks include bus type, star type and ring type [Research on the Performance of Airborne Optical Fiber Bus Topological Structure, Yi Xiaosu et al., Communication Technology]. There are many network technologies using star topology, including Fiber Channel (FibreChannel, FC), MIL-STD-1773, and Fiber Ethernet. Fiber Distributed Data Interface (FDDI) is a ring topology. FC has an arbitrated ring technology that is specially applied to the ring topology. Fiber Ethernet needs to use the spanning tree protocol when using the ring topology. [0003] Bus topology can be divided into tree, U-shaped, S-shaped and so on. Passive optical network is a typical tree topology, which consists of an opti...

AI Technical Summary

Problems solved by technology

[0004] Although U-shaped and S-shaped buses are centerless structures, there are fixed loopbacks at one or both ends of the bus

Extending and expanding the bus at the loopback end always needs to open and then close the loopback, and increase the line length of other nodes, so it will inevitably have a great impact on the communication of the original node

Because of this, U-shaped and S-shaped optical fiber buses are relatively rare in practical applications

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