an optical splitter

Abstract

The invention provides an optical divider. The optical divider comprises an input port, two output ports and a coupling area arranged between the input port and the output ports, wherein the ratio of the output light power of a single output end of the optical diver to the total output light power periodically changes along with changes of wavelengths of optical waves within an assigned wavelength range. Due to the application of the optical divider, the splitting ratio of the optical divider can be dynamically adjustable in many cycles.

Description

technical field [0001] The present application relates to the technical field of mobile communication, in particular to an optical splitter. Background technique [0002] In the existing technology, the passive optical network (PON) technology is the mainstream technology for realizing fiber access (FTTx). figure 1 is a schematic structural diagram of a passive optical network in the prior art, such as figure 1 As shown, the topology of a typical PON system is generally a tree topology, which is generally composed of an optical line terminal (OLT) at the central office equipment, an optical network unit (ONU) at the user end equipment, and an optical distribution network (ODN). "Passive" means that the ODN does not contain any active electronic devices and electronic power sources, and is all composed of passive optical devices such as optical fibers and optical splitters / combiners (Splitter). The ODN generally consists of optical fibers and optical splitters / combiners. an...

AI Technical Summary

Problems solved by technology

In the existing technology, for scenarios where the number of users increases, optical splitters can be newly deployed, but this solution needs to consume more valuable backbone access fibers; in the existing technology, it can also be deployed directly during the initial deployment An optical splitter with a large splitting ratio, but this solution will result in that although the optical splitter ports are used less in a large number of scenarios, the uplink and downlink insertion losses are still large splitting ratio insertion losses, resulting in tight power budgets

[0007] 3. There is a big difference in the distance of different users under a single PON port, or there is a big difference in the link loss of different distribution fibers (such as the bending loss during deployment and construction, etc.), so the power budget can only be calculated according to the worst link. Therefore, it will cause a waste of power budget for links with shorter distances or less loss, and may even cause power overload problems. At the same time, it also poses challenges to the automatic gain control (AGC) of the optical line terminal (OLT) receiver.

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