capacity of short-reach MMF networks

Mode group diversity multiplexing (MGDM) aims at creating independent, parallel communication channels over a single GI-MMF using several groups of modes and can greatly improve the capacity of short-reach MMF networks. It is a key technology to reduce the cost of optical access network, upgrade the existing access network, and achieve the FTTB as well as the chi hair straighteners FTTH. The proposal of MGDM communication technology based on the GI-MMF can effectively resolve the bandwidth limitation of MMF, upgrade rapidly and economically on the basis of existing multimode fiber and play a vital role in the current development of the optical fiber network. The cheap ralph lauren polo shirts most important problem to be solved is the crosstalk between the channels which can be called de-multiplexing, which has a great impact on the bandwidth of the MGDM system. How to implement simple and effective de-multiplexing while maintaining the low-cost of the system is the main task in this ralph lauren polo shirts thesis.This paper has done a lot of work on the further discount wedding dresses development of this technology on the basis of previous research. With the starting point of the low-cost, practical and easy to use, a system model of MGDM is built, and a 2×2 MGDM experimental system cheap evening dresses based on 1km-long silica GI-MMF with core–cladding diameter 62.5/125μm is the flat iron shop for us designed and realized, which achieve communications successfully while focusing on the alleviation of crosstalk between channels. It is the first time to propose the independent sell discount wedding dresses component analysis (ICA) as the de-multiplexing method in MGDM channels, of which FastICA algorithm based on the transient linear mixed model is adopted.
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