An optical splitter and ring passive optical network

Abstract

The invention provides an optical splitter and a ring passive optical network. The optical splitter includes: a first optical coupler, a second optical coupler and a housing. The ring passive optical network includes: OLT, multiple optical splitters and multiple ONUs; the OLT is provided with a first OLT port and a second OLT port; multiple optical splitters pass through the first OLT port of each optical splitter One port and the second port are serially connected; the first OLT port of the OLT is connected to the first port of the first optical splitter through an optical fiber, and the second OLT port of the OLT is connected to the second port of the last optical splitter through an optical fiber. port connection; each ONU corresponds to an optical splitter; each ONU is provided with a first uplink port and a second uplink port; the first uplink port and the second uplink port of each ONU are respectively connected to the The third port and the fourth port of the corresponding optical splitter are connected. The application of the present invention can form a ring passive optical network, save costs, realize ring network protection, and improve network reliability.

Description

technical field [0001] The present application relates to the technical field of mobile communication, in particular to an optical splitter and a ring passive optical network. Background technique [0002] The networking mode of the passive optical network (PON) in the prior art is a star topology. figure 1 It is a schematic diagram of a PON networking mode in the prior art. Such as figure 1 As shown, the PON in the prior art mainly includes: an optical line terminal (OLT) 11, multiple passive optical splitters (Passive Optical Splitter) 12, multiple optical network units (ONU) 13 and multiple optical fibers. An OLT can be connected to multiple ONUs through a passive optical splitter. The OLT and the optical splitter are connected by optical fibers, and the optical splitter and each ONU are also connected by optical fibers. Therefore, one or more a beam splitter. [0003] Since the entire PON network link does not require power supply and has no special environmental req...

AI Technical Summary

Problems solved by technology

[0006] 1) The optical splitter in the prior art can only be used to form a star network, but it is difficult to form a ring network or a wireless mesh network (MESH);

[0007] 2) In actual use of a PON star network, usually the number of ONUs connected to the PON port of an OLT is much smaller than the number of branches under the optical splitter, so the optical splitter has the characteristics of evenly distributing optical power It will cause a waste of optical power at the optical splitter port not connected to the ONU

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