Optical communication is communication in which light waves are used as carriers. There are two ways to increase the optical path bandwidth: one is to increase the single-channel transmission rate of the optical fiber; the other is to increase the number of wavelengths transmitted in a single optical fiber, that is, wavelength division multiplexing (WDM). In fact, optical communication equipment is only suitable for the last few The distance of kilometers is used.
For optical communications, its technology is basically mature, and business needs are relatively insufficient. Taking FTTH, which is known as the “final target of broadband access” as an example, its implementation technology EPON is fully mature, but the bandwidth required by ordinary users for Internet access is not high, so the commercial use of FTTH is limited to some pilot areas. However, in 2006, with the launch of triple play services such as IPTV, the bandwidth provided by operators could no longer meet the requirements of users for high-definition TV, and the deployment of FTTH was also put on the agenda. Coincidentally, ASON has flexible control over the transmission network and can provide personalized services for enterprise customers. Many operators develop and maintain enterprise customers, and they spare no expense to invest in building ASON.
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