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全光网的展望与分析 被引量:2
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作者 施璐 《光纤与电缆及其应用技术》 1999年第2期42-45,共4页
本文介绍了全光网的基本概念、分层结构、主要功能和发展趋势,说明了其与现有的SDH/SONET(同步数字体系/同步光网络)网相比体现出的优越性,并详细介绍了实现全光网所需器件的结构、功能及其关键技术。
关键词 光网 光插分复接 光网关 光交叉连接
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网关市场大门正在为谁而开
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作者 刘畅 《互联网周刊》 2001年第33期80-82,共3页
面对这一网络核心设备,通过本期网关专题,我们发现阿尔卡特、思科、IBM等众多国际厂商来了,中国厂商却退缩了,这是否应该引起我们的忧虑? 在早期的互联网中,网关即指路由器。路由器是网络中超越本地网络的标记,这个走向未知的“大门” ... 面对这一网络核心设备,通过本期网关专题,我们发现阿尔卡特、思科、IBM等众多国际厂商来了,中国厂商却退缩了,这是否应该引起我们的忧虑? 在早期的互联网中,网关即指路由器。路由器是网络中超越本地网络的标记,这个走向未知的“大门” 曾经、现在仍然用于计算路由并把分组数据转发到原始网络之外的部分,因此,它被认为是通向互联网的大门。随着时间的推移,路由器不再神奇,路由功能也能由主机和交换集线器来行使。现在,路由器变成了多功能的网络设备,它能将局域网分割成若干网段、互连私有广域网中相关的局域网以及将各广域网互连而形成了因特网,这样路由器就失去了原有的网关概念。然而术语网关仍然沿用了下来,它不断地应用到多种不同的功能中,定义网关已经不再是件容易的事。目前,主要有三种网关:协议网关、应用网关、安全网关。网关的种类也更加广泛、功能更加强大。 展开更多
关键词 市场 ASAP网 网络 设备 互联网 VPN网 光网关 CICS网
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Design and Simulation of Routing-switching Protocol Based on Optical Switch Array 被引量:1
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作者 HEWei MAOYou-ju LIUJiang 《Semiconductor Photonics and Technology》 CAS 2004年第3期152-157,共6页
An optical routing-switching technology based on optical switch array is proposed.The characteristics of the blocking and nonblocking networks are analyzed and compared,odd-even sorting network is used to realize opti... An optical routing-switching technology based on optical switch array is proposed.The characteristics of the blocking and nonblocking networks are analyzed and compared,odd-even sorting network is used to realize optical routing-switching,relative routing-switching protocol is designed.Simulation test under load shows that it can reduce a blocking effectively and enhance an efficiency of switching.Further,it can transfer the processing and switching within parallel computer from electric domain to optical domain. It can make parallel computer coordinating computing and processing at much more higher speed, storing and transmitting even more efficiently. 展开更多
关键词 Optical switch array Optical routing switch Nonblocking network Odd-even sorting Control protocol
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Tunable thermo-optic switch based on fluid-filled photo-nic crystal fibers 被引量:1
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作者 王然 姚建铨 +3 位作者 陆颖 苗银萍 赵晓蕾 王若琪 《Optoelectronics Letters》 EI 2012年第6期430-432,共3页
A tunable thermo-optic intensity-modulated switch is investigated theoretically and numerically. It is based on the infiltration of temperature-sensitive mixture liquids into index-guiding photonic crystal fibers (P... A tunable thermo-optic intensity-modulated switch is investigated theoretically and numerically. It is based on the infiltration of temperature-sensitive mixture liquids into index-guiding photonic crystal fibers (PCFs). The switching function attributes to the thermo-optic effect of the effective refractive index of the cladding. The simulation illustrates that the switch presents a tunable transition point according to the concentration of the mixture liquids, and the on-off switching functionality can be realized within a narrow temperature range of 2 ℃. The switches have wide application for innovative all-in-fiber optical communication and logic devices. 展开更多
关键词 Logic devices Optical communication Refractive index Switching functions
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