Planning method of splitter

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Application background of spectrometer
Optical splitter, also known as optical splitter, is an optical fiber junction device with multiple input ends and multiple output ends, and is often used for coupling, branching, and distribution of optical signals. In the mobile communication network, the optical splitter is used as a special probe for signaling monitoring, mainly to collect the original signaling data. Cooperate with the signaling analysis system to conduct real-time network monitoring and in-depth fault location, provide strong support for network maintenance, the market, and customers. Through multiple dimensions of index statistical analysis reports, the network and service quality can be evaluated and service quality improved. The group company’s guidance on LTE signaling collection also pointed out that in addition to continuing to retain the Gn link in the packet domain core network expansion project, it also needs to perform Gb/Iu-PS, SGs/S6a, S1-MME/S1-U, etc. The signaling link performs unified optical splitting and collection; the deployment of the optical splitter puts forward the requirements of “synchronized planning, synchronized construction, and synchronized acceptance” with the network side. It can be seen that the planning and design of future packet domain core networks must include the construction of optical splitters.
Principle of Optical Splitter
When the optical splitter splits the normal link, it will distribute to multiple split links according to the proportion of the optical power. Therefore, the optical power of the link will be attenuated to a certain extent after splitting. At the same time, due to optical fibers and connectors, etc. Own loss and chromatic dispersion may also result in lower optical power of the split-light link, which in turn may cause errors in the data received by the back-end equipment or even no data. To solve this situation, it is necessary to add an optical amplifier (OEO) to the link to amplify the optical power of the link after splitting to ensure that the data received by the back-end equipment is accurate. A mobile company’s 2/3/4G converged core network expansion project supporting optical splitter project, mainly to realize the key interface (Gn, Gb, Iu-PS, S1, S6a, SGs, etc.) data for the Internet traffic of 2/3/4G mobile users Perform optical splitting and data collection. In order to ensure the accuracy and completeness of data collection, while ensuring that the stability and security of the existing network are not affected, each optical path data collection system consists of three parts: the main link optical branch It is composed of optical amplifier, replication link optical amplifier, and replication link optical splitter, as shown in the “Schematic Diagram of Optical Data Link Acquisition System Structure”; the main link optical splitter is a fusion tapered 1 to 2 splitter The splitting ratio of each branch is 8:2, that is, 80% of the optical signal is transmitted on the transmission network to ensure that the transmission of the signal in the entire network is not affected; after the 20% of the optical signal is amplified by OEO, a PLC type 1 to 8 splitter is selected. The optical splitter is connected to each signal acquisition system.

Post time: Jan-14-2021