Distributed Optical Fiber Sensor for Multi-point Temperature Measurement

The distributed optical fiber sensing technology is overviewed, which is based on Raman scattering light theory. Basic operation principle, structure, system characteristics and signal processing are discussed. This structure and method of the signal processing possess of certain spatial resolution, hence will ensure the practicability of system.     

Experimental Research on Erbium-doped Superfluorescent Fiber Source

The effects of the variations in fiber length, fiber mirror reflectance on efficiency and output power are experimentally investigated for erbium-doped double pass backward superfluorescent fiber sources (SFSs). The influence of fiber length on mean wavelength stability (MWS) has also been demonstrated. By incorporating a short section of un-pumped erbium-doped fiber (EDF) at the output port, the pump power dependent on MWS becomes independent of pumped EDF length. This is a novel phenomenon that hasn‘t been reported up to now,and should be helpful to SFS fabrication and theory analysis. By using a fiber Michelson interferometer as spectrum slicing component,a multi-wavelength fiber source (MWFS) with ～20 channels (from 1542nm to 1559nm) is got. The MWFS has a channel spacing of ～0. 8 nm which satisfies ITUstandard. The intensity fluctuation among channels is less than 0.5dB,and the extinction ratio of all channels is above 14dB. This kind of MWFS should be useful to wavelength division multiplexing systems.     

激光技术与应用

工〔日〕住泽弘明侧闷7a卜口二夕又一加04,23(4)一131~136 2004060492微细加工用固体激光器=微捆加工用固体卜一了〔日)汕崎逮三彻.70卜口三夕又一2004,23(4)一137一140 2004060493工业用固体激光器的现状=产案用固体卜一廿刃现状〔日〕邓,屋辉座拐‘7o卜口二夕又一加04,23(4)一148一151 2004060494激光加工在重工业领域中的应用二重工案分野忆招汁石卜一廿加工刃通用(日〕石出孝均.7a卜口二夕又一2004,23(4)一153一159 2004060495利用激光产生等离子体的下一代光刻真空紫外乡丈?奋用协赴下次世代 2004060487用激光制作碳纳米管=卜一廿了7’…     

迈威：MW-DCR 6100有线数字电视机顶盒

九洲公司展出的GPT-B光通信平台是为满足有线电视HFC网络交互式使用．提供网络所需的各种功能单元更加灵活方便的系统配置，是一种能不断扩展升级的高性能、全模块化的宽带光纤传输系统。该平台由光平台机架配合调幅激光发送、调幅光接收、上行光发送、上行光接收、前置放大、数据调制解调等单元单个或多个搭配组成．为前端、分前端构建大规模、高密度系统提供方便．使系统更便于维护．更易于集中管理。     

美国StockorYalo公司发布新型掺铒光纤

美国StockorYalo公司推出一种新的掺铒光纤EDF-T9。该光纤具有更好的各向均匀性，有利于更高的能量转换效率和一致性，对同时掺杂的铝元素更精确的控制，从而支持任意增益平坦滤波器的需求。StockYal同时推出一种短波长的单模光纤产品，可以支持RGB成像     

创造中国西部通信业的奇迹--访四川汇源科技集团有限公司董事长朱开友

在通信行业中，人们似乎已经习惯于用“严冬“来形容全球通信业近来所经历的艰难处境。当许多私营企业苦苦挣扎于光纤光缆价格大战、企业面临生死抉择、行业处于四面楚歌的困境中时，四川汇源光通信股份有限公司却在中国相对贫困的西部，点起通信业发展的火把，驱走了严冬的寒意。     

FOB系列光纤生物传感器

FOB系列光纤生物传感器具有灵敏度高、特异性强、检测速度快、所需样品量少等特点，适用于核酸及蛋白质的检测。目前已研制成功三种型号的光纤生物传感器，FOB-1单探头，内置式多功能控制与采集卡，台式计算机控制并采集数据；FOB-3单探头，外置式多功能控制与采集卡，USB接口，台式计算机（或笔记本计算机）控制并采集数据：FOB-2五探头，一次可检测一个样品中的5种生物物质。