期刊文献+
共找到25篇文章
< 1 2 >
每页显示 20 50 100
智能光纤基础设施管理技术研究 被引量:4
1
作者 曾涛 沈成彬 蒋铭 《电信科学》 北大核心 2014年第6期142-147,共6页
随着国内FTTx网络的大规模建设和运营,采用物联网技术实现对海量光纤基础设施资源的自动化、智能化管理显得尤为重要。主要研究了基于电子标签的智能光纤基础设施管理技术及其系统主要模块,介绍了智能光纤基础设施管理系统产业链和标准... 随着国内FTTx网络的大规模建设和运营,采用物联网技术实现对海量光纤基础设施资源的自动化、智能化管理显得尤为重要。主要研究了基于电子标签的智能光纤基础设施管理技术及其系统主要模块,介绍了智能光纤基础设施管理系统产业链和标准化进展,分析了在运营商网络中的应用模式和发展趋势。 展开更多
关键词 光纤基础设施 资源管理 电子标签 智能终端 光纤到户
下载PDF
基于光纤基础网的全业务接入模式应用分析 被引量:1
2
作者 涂建光 黄勇 +2 位作者 梅仪国 张豪诚 钱科能 《广东通信技术》 2014年第4期27-30,共4页
分析介绍了光纤基础网的架构模型,并在光纤基础网的基础上,对全业务的接入与传统基站方式的接入进行优势对比。同时提出了基于光纤基础网的全业务接入的应用分析,并对基于光纤基础网建设完成后,合理地提高光纤资源利用率提出了可行性技... 分析介绍了光纤基础网的架构模型,并在光纤基础网的基础上,对全业务的接入与传统基站方式的接入进行优势对比。同时提出了基于光纤基础网的全业务接入的应用分析,并对基于光纤基础网建设完成后,合理地提高光纤资源利用率提出了可行性技术实施建议。 展开更多
关键词 光纤基础 全业务接入 光缆利用率
下载PDF
光纤基础网络走向智能化的未来之资源信息准确化
3
作者 朱永刚 《价值工程》 2013年第9期194-195,共2页
国家宽带网络科技发展"十二五"专项规划,将宽带建设提升到国家战略的高度,作为宽带建设的载体,光纤基础设施网络将迎来新的建设浪潮。前期建设积累的问题,要想在继续建设中解决,使得资源利用率和准确率提高,节省建设和维护的... 国家宽带网络科技发展"十二五"专项规划,将宽带建设提升到国家战略的高度,作为宽带建设的载体,光纤基础设施网络将迎来新的建设浪潮。前期建设积累的问题,要想在继续建设中解决,使得资源利用率和准确率提高,节省建设和维护的人力物力成本,智能化是未来的建设方向。智能化光纤基础设施网络将具备资源信息准确率高,施工流程闭环自动管理,开通业务快,故障定位准等特点。 展开更多
关键词 国家宽带 智能化 光纤基础网络 管理
下载PDF
光纤基础网络的方向——iODN 被引量:1
4
作者 张祥宾 《中国电子商务》 2012年第11期30-30,共1页
随着新产品和新工艺的逐渐成熟和产品价格的下降,0DN的大规模发展已成为可能,本文就介绍了ODN网络建设发展趋势以及在网络规划和网络部署中运营商的关注点。IODN是解决ODN管理方式存在两大核心问题的必然选择。
关键词 iODN 网络规划 光纤基础
下载PDF
移动光纤基础网建设思路探讨 被引量:1
5
作者 陆冰 《通讯世界》 2017年第20期75-76,共2页
本文主要对光纤基础网建设原则、光交箱的设置等建设原则进行探讨,光交基础网的合理规划,可以有效节约管孔资源、减少新建光缆工作量,从而降低运营商投资成本,实现经济效益。
关键词 光纤基础 综合业务接入区 汇聚中继光缆 主干光缆
下载PDF
“双一流”建设背景下“光纤激光基础”双语教学研究 被引量:4
6
作者 姜曼 周朴 +1 位作者 曾生跃 曾翼 《高等教育研究学报》 2023年第1期101-105,110,共6页
全面提升学生的综合素质、拓展学生的国际视野、培养拔尖创新人才是“双一流”建设的目标要求,双语课程的开设对培养学生的科研素质与创新能力具有重要作用。“光纤激光基础”是我校光学工程学科开设的一门研究生专业双语课程。从教学... 全面提升学生的综合素质、拓展学生的国际视野、培养拔尖创新人才是“双一流”建设的目标要求,双语课程的开设对培养学生的科研素质与创新能力具有重要作用。“光纤激光基础”是我校光学工程学科开设的一门研究生专业双语课程。从教学队伍建设、教学资源建设、教学方法、教学组织、考核评价和质量评估等环节对该门双语课程的建设与实践进行系统总结,并对工科类课程的双语教学提出建议,以期为双语教学改革提供有益借鉴。 展开更多
关键词 光学工程 光纤激光基础 双语教学 教学改革
下载PDF
无源光网络的运行、维护与管理 被引量:3
7
作者 沈成彬 蒋铭 王波 《中兴通讯技术》 2014年第5期17-22,共6页
基于增强的电信管理运营图(eTOM),研究了无源光网络(PON)的运行、维护与管理体系的架构,该系统包括网络资源管理、装维流程管理、服务保障系统等子系统。结合电信运营商的实际需求,重点研究了智能光纤基础设施管理、终端零配置开通、光... 基于增强的电信管理运营图(eTOM),研究了无源光网络(PON)的运行、维护与管理体系的架构,该系统包括网络资源管理、装维流程管理、服务保障系统等子系统。结合电信运营商的实际需求,重点研究了智能光纤基础设施管理、终端零配置开通、光链路测量与诊断等关键技术,并分析了上述关键问题的发展趋势与部署策略。 展开更多
关键词 无源光网络 运行、维护和管理 智能光纤基础设施管理 服务开通 光链路测量与诊断
下载PDF
基于特大型城市双千兆覆盖需求的传送网优化研究 被引量:1
8
作者 章霄 刘华 +1 位作者 张明浩 庄冀 《电信工程技术与标准化》 2019年第6期14-18,共5页
为了应对双千兆覆盖的巨大承载压力,提升特大型城市传送网的优化效果,实现标本兼治,本文在当前光纤基础网架构和建设标准的基础上,阐述了传送网优化需求,分析了优化存在的问题。基于以上需求和问题,探讨和比对了“宏”与“微”优化方向... 为了应对双千兆覆盖的巨大承载压力,提升特大型城市传送网的优化效果,实现标本兼治,本文在当前光纤基础网架构和建设标准的基础上,阐述了传送网优化需求,分析了优化存在的问题。基于以上需求和问题,探讨和比对了“宏”与“微”优化方向选择,形成基于微网格的优化思路。通过建立健康度指标体系,提出具体的评估和测算方法,最终对特大型城市基于微网格的传送网优化提出了指导意见。 展开更多
关键词 双千兆 微网格 光纤基础 街坊
下载PDF
Network Virtualization Based Seamless Networking Scheme for Fiber-Wireless (FiWi) Networks 被引量:3
9
作者 DAI Qinglong ZOU Jianfeng SHOU Guochu HU Yihong GUO Zhigang 《China Communications》 SCIE CSCD 2014年第5期1-16,共16页
In order to reduce cost and complexity,fiber-wireless(FiWi) networks emerge,combining the huge amount of available bandwidth of fiber networks and the flexibility,mobility of wireless networks.However,there is still a... In order to reduce cost and complexity,fiber-wireless(FiWi) networks emerge,combining the huge amount of available bandwidth of fiber networks and the flexibility,mobility of wireless networks.However,there is still a long way to go before taking fiber and wireless systems as fully integrated networks.In this paper,we propose a network visualization based seamless networking scheme for FiWi networks,including hierarchical model,service model,service implementation and dynamic bandwidth assignment(DBA).Then,we evaluate the performance changes after network virtualization is introduced.Throughput for nodes,bandwidth for links and overheads leaded by network virtualization are analyzed.The performance of our proposed networking scheme is evaluated by simulation and real implementations,respectively.The results show that,compared to traditional networking scheme,our scheme has a better performance. 展开更多
关键词 fiber-wireless networks network virtualization service future network
下载PDF
Performance of Slope Behavior Indicators in Unsaturated Pyroclastic Soils 被引量:3
10
作者 Luciano PICARELLI Emilia DAMIANO +3 位作者 Roberto GRECO Aldo MINARDO Lucio OLIVARES Luigi ZENI 《Journal of Mountain Science》 SCIE CSCD 2015年第6期1434-1447,共14页
Landslide risk is increasing in many parts of the world due to growth of population and infrastructures. Therefore, an effort has to be made in developing new and cheap sensors for areas susceptible of landslides to c... Landslide risk is increasing in many parts of the world due to growth of population and infrastructures. Therefore, an effort has to be made in developing new and cheap sensors for areas susceptible of landslides to continuously control the slope behaviour, until approaching failure conditions. The paper reported experimental data from smallscale physical models about the performance of Time Domain Reflectometry(TDR) and optical fibres, which act as the indicators of the incoming failure of slopes covered by unsaturated granular soils. Obtained results appear encouraging, since both sensors provide continuous information about the state of the slope, in terms of water content profiles and ongoing deformations, induced by rainwater infiltration, even immediately before the triggering of a fast landslide. 展开更多
关键词 Unsaturated granular soils Slope monitoring Rapid landslide Optical fibre Time Domain Reflectometry Probe
下载PDF
Analysis of Sampled Fiber Bragg Grating Based on the Photonic Crystal Theory
11
作者 ZHU Dan-dan 《Semiconductor Photonics and Technology》 CAS 2009年第3期184-188,共5页
One of the most basic characteristics of photonic crystal is frequency band gap. When defects are introduced into the periodic photonic crystal, a number of defect modes appear in the stop band. In this paper, we expl... One of the most basic characteristics of photonic crystal is frequency band gap. When defects are introduced into the periodic photonic crystal, a number of defect modes appear in the stop band. In this paper, we exploit transfer matrix method based on photonic crystal theory, and assume the sampled fiber Bragg grating as one-dimensional dual photonic crystal with a large size defect. Characteristics of the sampled fiber Bragg grating are analyzed. Experimental results show that the sampled fiber Bragg grating has many reflective peaks. Its reflectivity, center wavelength, reflective peak intervals and band width all change with the grating parameters, including grating length, duty ratio of the material with high dielectric constant, and index modulation depth and period. Results agree with the conventional couple mode theory which can be used when analyzing other characteristics of the sampled fiber Bragg grating or applying it into practice. 展开更多
关键词 photonic crystal sampled fiber Bragg grating transfer matrix DEFECT
下载PDF
与时俱进的孝感学院物理系
12
《孝感学院学报》 2004年第3期F003-F003,共1页
孝感学院物理系创建于1974年,现开办有物理学、电子信息科学与技术、光信息科学与技术(方向)等本科专业和应用电子技术专科专业,下设普通物理、理论物理、电子技术、实验教学等教研室,建有“光电子技术”和“视觉信息加工”两个研究... 孝感学院物理系创建于1974年,现开办有物理学、电子信息科学与技术、光信息科学与技术(方向)等本科专业和应用电子技术专科专业,下设普通物理、理论物理、电子技术、实验教学等教研室,建有“光电子技术”和“视觉信息加工”两个研究所,一个家用电器维修中心。在校学生800余人。 展开更多
关键词 孝感学院 物理系 师资力量 光信息科学 《光波导与光纤通信基础 电子设计自动化
下载PDF
NORDX/CDT新推FiberExpress防侵入/卡榫式LC产品线
13
《智能建筑与城市信息》 2004年第6期122-122,共1页
关键词 光纤布线基础设施 NORDX CDT FiberExpress 防侵入/卡榫式LC产品线
下载PDF
Cycle-based protection for survivable WDM networks design
14
作者 张振荣 Yin Hongxi 《High Technology Letters》 EI CAS 2009年第1期88-93,共6页
A new integer linear program (ILP) formulation was developed to solve the problem of shared cycles design for optical networks with and without wavelength conversion. Numerical studies show that the shared cycles de... A new integer linear program (ILP) formulation was developed to solve the problem of shared cycles design for optical networks with and without wavelength conversion. Numerical studies show that the shared cycles design requires much lower redundancy compared with p-cycle design when the maximum number of spans allowed in the cycles is relatively small, but the difference in the redundancy between the two designs becomes smaller or disappears as the maximum number of spans allowed in the cycles increases. 展开更多
关键词 cycle-based protection integer linear program (ILP) wavelength division multiplexing (WDM)
下载PDF
介质转换器的发展
15
《计算机网络世界》 2005年第2期12-12,14,16,共3页
在理想网络世界中,每个连接都会在同一个专用光纤基础设施上开始和结束。而那些陈旧的网络元件,例如布线和相关装备.它们将被光传输技术中最新的相关产品淘汰和取代。
关键词 介质转换器 SFP 计算机网络 网络管理员 光纤基础设施 网络元件
原文传递
High-finesse displacement sensor and a theoretical accelerometer model based on a fiber Fabry-Perot interferometer 被引量:3
16
作者 Xu ZENG Yu WU +1 位作者 Chang-lun HOU Guo-guang YANG 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2009年第4期589-594,共6页
A displacement sensor based on the fiber Fabry-Perot (F-P) cavity was proposed in this paper. Theoretical and experimental analyses were presented. Displacement resolution was demonstrated by spectrum-domain experimen... A displacement sensor based on the fiber Fabry-Perot (F-P) cavity was proposed in this paper. Theoretical and experimental analyses were presented. Displacement resolution was demonstrated by spectrum-domain experiments to obtain the dynamic range of the F-P sensor, and a piezoelectric crystal unit (PZT) was used as the driver. The output signal was modulated by a piezoelectric ceramic ring and demodulated by a phase-locked oscillator. The experimental results show that the displacement resolution of the F-P sensor is less than 5 nm and the dynamic range is more than 100 μm. As acceleration is the second-order differential of displacement, an accelerometer model was proposed using the finite element method (FEM) nd ANSYS software. 展开更多
关键词 Fiber Fabry-Perot (F-P) sensor Spectrum demodulation Micro-displacement measurement Accelerometer model
原文传递
A novel oil level monitoring sensor based on string tilted fiber Bragg grating 被引量:6
17
作者 蒋奇 《Optoelectronics Letters》 EI 2011年第3期171-174,共4页
In this paper,we present a novel oil level monitoring sensor based on string tilted fiber Bragg grating(TFBG).The measurement range and sensitivity of oil level monitoring can be modulated via changing the length and ... In this paper,we present a novel oil level monitoring sensor based on string tilted fiber Bragg grating(TFBG).The measurement range and sensitivity of oil level monitoring can be modulated via changing the length and number of string tilted fiber gratings.The transmission spectrum of string TFBGs immersed in oil changes obviously with the oil level variation.Experiments are conducted on three 2 cm-length serial TFBGs with the same tilted angle of 10o.A sensitivity of 3.28 dB/cm in the string TFBG sensor is achieved with good linearity by means of TFBG spectrum characteristic with peak-low value.The cladding mode transmission power and the amplitude of high order cladding mode resonance are nearly linear to the oil level variation.This kind of sensor is insensitive to temperature and attributed to be employed in extremely harsh environment oil monitoring. 展开更多
关键词 Fiber Bragg gratings Fiber optic components Level measurement Plasma diagnostics SENSORS
原文传递
Characteristic analysis of a novel F-P interferometer based on a pair of FBGs with built-in LPFGs 被引量:7
18
作者 王春宝 张伟刚 +2 位作者 阮隽 尚佳彬 颜爱东 《Optoelectronics Letters》 EI 2012年第2期84-88,共5页
The transmission characteristics of a Fabry-Perot (F-P) interferometer based on a fiber Bragg grating (FBG) pair with a built-in long-period fiber grating (LPFG) are theoretically analyzed, and the shift of tran... The transmission characteristics of a Fabry-Perot (F-P) interferometer based on a fiber Bragg grating (FBG) pair with a built-in long-period fiber grating (LPFG) are theoretically analyzed, and the shift of transmission interference fringe as a function of environmental refractive index is acquired. The influence of the lengths of F-P cavity, LPFG and FBG on the transmission characteristics of the proposed interferometer has been numerieaUy investigated, and the simulation results indicate that the sensitivity of refractive index reaches 2.27 × 10-6 for an optical spectrum analyzer (OSA) with a resolution of 1 pm. 展开更多
关键词 Fiber Bragg gratings INTERFEROMETERS Spectrum analyzers
原文传递
Study on Sensitivity Improving of Fiber Bragg Grating Based pH Sensor 被引量:3
19
作者 Xiongchang Liang Shun’er Chen +1 位作者 Hongbin Huang Weiping Liu 《Photonic Sensors》 SCIE EI CAS 2014年第1期28-33,共6页
The key factor of the sensitivity in the FBG-based pH sensor is analyzed in detail. A multi-thin-layer structure of the gel coated cover was proposed and implemented with a special process. The sensors with the coated... The key factor of the sensitivity in the FBG-based pH sensor is analyzed in detail. A multi-thin-layer structure of the gel coated cover was proposed and implemented with a special process. The sensors with the coated thickness of 420 ~m, 500 ~m, and 580 ~m were built up, respectively. The corresponding spectral shifts of 0.08nm, 0.13nm, and 0.22nm were detected when the pH sensors were soaked in the pH value of 3-9. Meanwhile, the sensor with the gel layer thickness of 580 ~tm was measured in the optimum measurement time period with the pH value changing from 3-12, in which the detected sensitivity of 52pm/pH was achieved in the pH range of 6-12. 展开更多
关键词 Fiber Bragg grating HYDROGEL pH sensor sensitivity
原文传递
A Fresnel Reflection-Based Optical Fiber Sensor System for Remote Refractive Index Measurement Using an OTDR 被引量:4
20
作者 Jianying Yuan Chunliu Zhao +3 位作者 Manping Ye Juan Kang Zaixuan Zhang Shangzhong Jin 《Photonic Sensors》 SCIE EI CAS 2014年第1期48-52,共5页
In this paper, we propose a Fresnel reflection-based optical fiber sensor system for remote refractive index measurement using the optical time domain reflectometry technique as an interrogation method. The surroundin... In this paper, we propose a Fresnel reflection-based optical fiber sensor system for remote refractive index measurement using the optical time domain reflectometry technique as an interrogation method. The surrounding refractive index from a long distance away can be measured easily by using this sensor system, which operates based on testing the Fresnel reflection intensity from the fiber-sample interface. This system is a simple configuration, which is easy to handle. Experimental results showed that the range of this measurement could reach about 100.8km, and the refractive index sensitivities were from 38.71 dB/RIU to 304.89 dB/RIU in the refractive index (RI) range from 1.3486 to 1.4525. 展开更多
关键词 Fresnel reflection optical fiber sensor remote measurement OTDR
原文传递
上一页 1 2 下一页 到第
使用帮助 返回顶部