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Registered Multi-degree cross-connector system, operating method and optical communication network using the same
이미지 확대
Multi-degree cross-connector system, operating method and optical communication network using the same
- Inventors
- Chung Hwan Seok, Sun Hyok Chang, Lee Sang Soo, Kim Kwangjoon
- Application No.
- 12514977 (2006.12.06)
- Publication No.
- 20100027996 (2010.02.04)
- Registration No.
- 8155521 (2012.04.10)
- Country
- UNITED STATES
- Project Code
- 06MT2600, ASON based Metro Photonic Cross-Connect Technology, Kim Kwangjoon
- Abstract
- Provided are a network node which has a wavelength switching cross-connection function and can thus interconnect paths of a wavelength-division-multiplexed optical signal and convert wavelengths, and an operating method of the network node. Accordingly, it is possible to provide a multi-degree cross-connection system having a simple structure at lower cost by allowing transmission of optical signals supposed not to be added/dropped at a network node without converting them into electrical signals and performing O/E conversion or E/O conversion only on optical signals supposed to be added/dropped at a network node. In addition, it is possible to increase the expandability of networks by regenerating degraded signals and which can effectively utilize bandwidths by grooming low-speed electrical digital hierarchy signals and transmitting them as high-speed optical signals. Moreover, it is possible to increase the availability of network resources by performing wavelength conversion without the need of additional wavelength converters. Furthermore, it is possible to prevent multiplexed optical signals from being degraded by filtering even when the multiplexed optical signals are not demultiplexed into wavelengths. Still furthermore, it is possible to perform a multicast operation on input wavelengths.
- KSP Keywords
- Connection system, Electrical signal, High Speed, Lower cost, Network node, Network resources, Optical signal, Wavelength Division Multiplexing(WDM), Wavelength-division, communication network, low speed, optical communication networks, optical communications, simple structure, wavelength conversion, wavelength converter, wavelength switching