TAILIEUCHUNG - designing fiber optic systems

Tham khảo tài liệu 'designing fiber optic systems', kỹ thuật - công nghệ, kĩ thuật viễn thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | UDC WDM Optical Fiber Transmission Systems Daisuke Maruhashi Kazuo Yamane VHiroyasu Sumiya Yasuo Nagai Manuscript received March 15 1999 This paper introduces Fujitsu s wavelength division multiplexing WDM systems and the technologies they incorporate. Two types of systems have been developed one is for a long-haul network and other is for a metro network. These systems have a high-capacity maximum 320 Gb s and good performance transmission up to 600 km and are very compact. They can easily be modified to meet customers needs because a common platform is used for all configurations. 1. Introduction The traffic volume of telecommunication networks is rapidly increasing and this trend will clearly continue into the next century. Therefore it is important to build network systems which can be easily upgraded to cope with increases in traffic volume. Because the wavelength division multiplexing WDM system has the merits of high-capacity high-speed low-cost and good upgradability it will be a fundamental system in future networks. The WDM system also provides traffic transparency therefore it can be operated with various interfaces for example the interfaces of SONET SDH ATM switches and IP routers. We have developed two types of WDM systems one is for a long-haul network and the other is for a metro network. These systems can have up to 32 wavelengths and operate at Gb s or 10 Gb s using single mode fiber SMF and nonzero-dispersion shifted fiber NZ-DSF . 2. WDM systems Features The overall specifications of the Fujitsu WDM systems are shown in Table 1. There are two systems. One is the FLASHWAVE 320G which is a very-high-capacity system mainly for long-haul networks the other is the FLASHWAVE Metro which is a middle-capacity economical system mainly for metro networks. Table 1 System specifications. Item FLASHWAVE 320 G FLASHWAVE Metro Multiplexed wavelength 1 to 32 1 to 16 Wavelength range to nm nm spacing to .

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