共查询到19条相似文献,搜索用时 109 毫秒
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一种新型多功能的OADM结构 总被引:1,自引:1,他引:0
提出一种新型的OADM结构,并对这种结构的各种特性做了详细的分析,指出该OADM结构在未增加器件和成本的条件下,能完成上下路,组播,再生,波长变换,通道保护和复用段保护等多种功能. 相似文献
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基于光纤光栅的光子器件及其在波分复用系统中的应用 总被引:4,自引:0,他引:4
本文报道了光纤光栅外腔激光器、光纤光栅解复用器、光纤光栅滤波器、解复用滤波器和分/插复用器(OADM)等在全光通信网中有应用潜力的新型光子学器件的实验结果,并演示了这些器件的功能和基于这些器件的4路符合ITU波长标准,间隔约为1.6nm,速率为4×155Mbit/s的密集波分复用传输。 相似文献
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In this paper, we have investigated the wavelength division multiplexed (WDM) system using ring network topology. This network is used to increase the capacity with eight optical add/drop multiplexers (OADMs) by using dispersion compensating fiber and semiconductor optical amplifier (SOA) to achieve a distance up to 1600 km. It is observed that network shows the acceptable results at 15 Gbps data rate with 100 GHz channel spacing. The OADM nodes are also varied to investigate the network performance in the term of BER and Q-factor. 相似文献
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In this paper, we have investigated wavelength division multiplexed (WDM) hybrid (ring-tree-star) topology. Eight optical add/drop multiplexers (OADMs) are used to make ring structure. The single mode fiber and dispersion compensating fiber and semiconductor optical amplifier (SOA) are employed between each OADM to achieve a maximum. To increase the number of users each OADM node of ring network is connected to star and tree network topology which can accommodate more than 2048 users. Various system parameters (for different channel spacing, different input power signal, different data rates and the fiber length) are varied to investigate the system performance in the term of BER and Q factor. 相似文献
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一种新型可配置全光分插复用器的设计 总被引:1,自引:1,他引:0
本文提出了一种新型的基于光纤光栅和光纤环形镜的可动态配置的全光分/插复用器,并对这种结构实现单信道、多信道或有选择性地对奇次信道或偶次信道进行下路或直通配置进行了模拟和分析,说明了这种结构的可行性. 相似文献
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波分复用全光通信网中的放大自发辐射噪声积累效应研究 总被引:3,自引:0,他引:3
给出了一种全光通信网波长域计算机模拟方法,模拟了波分复用信号经过3个光分插复用节点后的信号及放大自发辐射积累的光谱图,并与实验结果进行了对比。计算了波分复用信号经过50个光分插复用节点极限情况下的信噪比,结果表明放大自发辐射噪声积累造成的信噪比下降仍然可以保证接收机在10Gb/s时的误码率小于10^-9。这些结果可以被应用到未来国家或地区级全光通信网中。 相似文献
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In this paper, a design of a generic multipurpose device is described. It can operate, in its basic structure, as a tunable
wavelength filter, wavelength multiplexer or λ router; by using a more complex structure, the device works as an optical add
drop multiplexer (OADM) or/and optical switch (OS). It can be used in both coarse and dense wavelength division multiplexing
technology (CWDM/DWDM) according to the network application. Performance parameters of the device, like switching time, losses,
crosstalk or polarization insensitivity are analyzed and compared with other switching technologies. Some applications of
the holographic WDM multifunction device in METRO networks are described, such as the utilization of OADMs in optical path
protection/reconfiguration between nodes (1 + 1 configuration) and the use of optical switches to interconnect nodes of the
METRO–access network with the METRO-Core or long haul networks in a reconfigurable topology. Other applications in Access
networks are possible, like the use of the OADMs in optical path protection between the optical line termination (OLT) at
the central office (CO) and the remote node (RN) in a fiber to the office passive-optical network (FTTO-PON) or, in some specific
cases, the utilization as tuneable holographic filters in a FTTO application, at the Business ONT (BONT), to select the assigned
optical wavelength according to the services provided to the customer. 相似文献
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全光地址识别机理的研究 总被引:3,自引:0,他引:3
在面向分组业务的全光交换系统中,采用全光地址处理技术可以减少处理时延,大大提高信息处理速度和网络吞吐量,对全光网络的研究具有重要意义。分析了光正交码的自相关性与互相关性,并将其特性应用于全光传送网中,以针对未来基于光分组业务的全光环网为例,提出了一种光分插复用器的新型结构,给出了总体应用设计规则,重点研究和分析了全光地址识别机理和相关的应用设计方法,给出了针对全光环网组网规模的仿真分析结构和基本实验结果。结果表明采用所提出的设计原则和设计方法来实现全光地址识别是可行的。 相似文献