DWDM technology networking mode is mainly point-to-point, chain, star and ring type networking, and only grassroots protection is provided in the protection mode. OTN networking is usually ring networking, mesh networking and other networking methods. OTN provides the ability to manage each wavelength on each optical fiber. OTN can better adapt to the development of network in the future. Therefore, independent networking is the best choice. Although DWDM system greatly improves the optical fiber transmission efficiency and supports the transmission of large particle services.
However, due to the limitation of wavelength division technology, the wavelength is configured in the form of point-to-point, which can not be dynamically adjusted. The resource utilization is not high, and the flexibility of business adjustment is not enough. Therefore, once the flow direction of business changes, the adjustment will be very complex. OTN inherits the high-capacity transmission function of DWDM and has flexible optical and optical joint scheduling and protection capability.
In OTN, data configuration can be used for cross-connection similar to SDH service configuration , and multiple types of services can be accessed simultaneously, enabling intelligent scheduling of services. DWDM is mainly used in inter provincial trunk network and intra provincial backbone network, mainly in point-to-point networking mode, and 10G DWDM Tunable optical module may be required. If the line protection mode is adopted, more lines need to be laid, and the cost is high.
Small and small containers, OTN has the ability to access and process from the system, improving bandwidth utilization efficiency. OTN technology can also supervise the working performance and faults of network communication and electrical regeneration. In the process of performance fault detection, OTN technology is superior. Differences in networking and protection mechanisms. The DWDM technology networking mode is mainly point-to-point, chain, star, and ring network.
Only the base layer protection is provided in the protection mode. The terminal device is not protected. This protection mode requires two optical cables that are independently routed. The OTN networking is usually a ring network or a mesh network.
Business scheduling capabilities. In OTN, data configuration can be used for cross-connection similar to SDH service configuration , which can access multiple types of services at the same time, and can realize intelligent scheduling of services. Application scenario. What is Spectrum Sharing?
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Programmable Infrastructure Programmable Infrastructure. Services Services. Solutions Solutions. Technology principles Technology principles. View all products View all products. Insights by topic. Insights by industry Insights by industry. Like Article. It is the modules that put data from different sources together on a fiber optic cable then these modules further increases system bandwidth and capacity by using closely spaced wavelengths to carry multiple signals on same cables.
The channel spacing is reduces to 1. The cost effective ways of increasing capacity without replacing fiber. There are commercial systems available with the capacities of 32 channels and upwards. This works at Layer 1 to accumulate various tasks into the tunnel of WDM technologies, increasing the transmission distance and volume of fiber optics.
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