Optical Add/Drop Multiplexer Based on Tapered Fibers–Microsphere Resonators and Optical Add/Drop Multiplexer’s Application in Optical Networks

摘要本文研究锥光纤微球谐振腔新型光分插复用器（OADM）和OADM在铁路链式通信传输网中的组网应用。OADM是全光通信网的核心器件之一,研究新型的OADM器件一直受到了很大关注。我们研究了基于锥光纤瞬逝波与微球腔回廊模耦合的锥光纤­——微球谐振腔—锥光纤（TRT）结构的OADM，它具有光纤兼容性、信道插入损耗小、消光比大、耦合效率高、容易集成在硅片衬底上等优点，具有很高的性能价格比和广阔的应用前景。根据电磁场理论分析了锥光纤瞬逝波与微球回廊模的耦合机理，得到了两者最佳耦合的匹配条件。以此为根据我们设计并用微机电(MEMS)工艺制作了集成于硅单晶衬底上的双微球三条锥光纤TRT新型OADM...ABSTRACT In this paper, we had studied a novel type of optical add/drop multiplexer(OADM) based on tapered fibers —microphere resonators ,and the application of OADM in the railway bus architecture communication network. The OADMs are key elements in all optical fiber communication network , the research of novel OADMs has been receiving considerable attention. We had studied the OAD...学位：理学博士院系专业：物理与机电工程学院物理学系_凝聚态物理学号：B20002400

Constructive the Railway Management Iinformation System Transport Platform Based on Optical Ethernet

提出了构建基于光以太网的铁路管理信息传输平台方案。讨论了光以太网的业务特点及实现。根据铁路通信网的特点,提出把铁路局范围的通信网当成城域网处理,并据此采用EoS技术设计构造一专业部门路局范围内的局域网。This paper describes how to constructive the railway management information system transport platform based on optical Ethernet. We discuss some of the potential service offerings enabled by Optical Ethernet. According to the characteristic of the railway communication networks ,we deal the networks with a metropolitan area networks , and design some a department 's LAN in the scope of the whole bureau by EoS technology

Recognization and Analysis of the Morphology-dependent Resonance Spectra of Silica Optical Microsphere

采用DWDM光波测试系统,借助锥光纤与微球的高效耦合,以波长1530~1560 nm、步长为1 pm的激光激发微球回廊模,对SiO2微球腔的形貌相关谱线进行了测试.并根据形貌相关谱渐近公式对测试结果进行了识别指认和分析,为今后制作基于微球腔的器件提供基础.Morphology-dependent resonance spectra of silica optical microsphere is studied by means of light wave test system,in 1 pm wavelength scanning resolution laser to excite whispering gallery modes.The spectra is recognized and analyzed according to the approximate expressions of morphology-dependent resonance spectra.This will be a foundation for the fabrication of a photonic device based on microsphere resonator.福建省自然科学基金资助项目(A0610016);; 福州大学科技发展基金资助项目(2006-XQ-30

An optical access scheme for railway communication stations employing WDM and OADM

文章提出了一种基于密集波分复用器(DWDM)和光分插复用器(OADM)、以物理拓扑为总线型、逻辑拓扑为星形的适合于铁路通信各站光接入的光传输网方案,描述了光节点结构及这种网络的波长重复利用和自愈保护功能,实验测试了逻辑单星形光网络的传输特性,分析了网络规模的限制因素.We have proposed an optical access scheme for railway communication stations based on physical bus and logical star DWDM-OADM architecture optical transport networks. The OADM optical nodes architecture was described, the logical dual-star architecture's self-healing function was illustrated. We have demonstrated the logical single-star architecture network transmission performance and analysed the factors limiting the network scale.上海铁路局科委资助项

Luminescent properties of Er~(3+)/Yb~(3+) co-doped oxyfluoride glass ceramic microsphere with the tapered fiber-microsphere coupling system

采用高温煅烧法制备了Er3+/yb3+共掺的氟氧玻璃陶瓷新材料(41.2SIO2-29.4Al2O3-17.6nA2CO3-11.8lAf3-0.5Erf3-2.5ybf3),并制作了透明带柄微球.提出了用锥光纤微球耦合系统研究Er3+/yb3+共掺的氟氧玻璃陶瓷材料发光特性的新方法.它具有所需激发光功率低、制备简便和便于测试的特点.用锥光纤作为耦合器将976 nM激光高效耦合入微球,并将产生的荧光和激光耦合出微球输到光谱分析仪,测量到了强的522,545和657 nM上转换荧光,也测到Er3+产生的1562 nM激光振荡光谱图.分析了Er3+/yb3+共掺氟氧玻璃陶瓷微球中Er3+上转换发光的机理、发光效率高的机理,分析了在氟氧玻璃陶瓷微球中产生激光振荡阈值比在SIO2基质微球中高的机理.We prepare Er3+/Yb3+co-doped oxyfluoride glass ceramic samples by high temperature calcination method(41.2SiO2-29.4Al2O3-17.6Na2CO3-11.8LaF3-0.5ErF3-2.5 YbF3), and also fabricate transparent microspheres each with a handle.We propose a new method of studying the luminescent properties of Er3+/Yb3+co-doped oxyfluoride glass ceramic with the tapered fiber-microsphere coupling system.The method has characteristics such as low excitation optical power, easy preparation and testing.We couple the 976 nm laser into the microspheres with the coupler of optical tapered fiber, then the fluorescence and laser are connected to spectrum analyzer with the optical tapered fiber.The strong up-conversion fluorescences at 522, 545 and 657 nm are obtained, and the laser oscillation spectra generated by Er3+ions at 1562 nm are also measured.The up-conversion luminescence mechanism of Er3+, the mechanism of high luminescence efficiency in Er3+/Yb3+co-doped oxyfluoride glass ceramic microsphere, and the mechanism of higher laser oscillation threshold in the oxyfluoride glass ceramic microsphere than in the SiO2matrix microsphere are all analyzed

Study on luminescent properties of Yb~(3+)-doped phosphosilicate microsphere

本文采用双锥光纤与微球腔耦合系统研究成分为55.93P2O5-3.57Al2O3-15nA2CO3-20SIO2的掺yb3+磷硅酸盐微球腔的合作上转换发光、下转换激光振荡及其级联拉曼激光振荡等发光特性.本实验采用中心波长为976 nM、线宽为0.15 nM的单纵模半导体激光作为抽运光源,在掺yb3+磷硅酸盐微球腔中测得中心波长为476.1 nM的蓝色合作上转换荧光,并运用合适的理论模型来解释该合作上转换产生11.9 nM蓝移效应的原因.同时,在1058.26 nM和1060.02—1126.08 nM处分别测得了由于微球腔谐振产生的下转换单纵模及多纵模激光振荡.另外,本文首次在同一微球腔中测得了由yb3+下转换激光激发产生的多级级联拉曼激光.在抽运功率为8.53 MW时,产生的级联拉曼激光可以达到两级,且波长延伸至1300 nM附近.Cooperative luminescence, down-conversion laser oscillation and cascaded Raman laser in Yb3+-doped 55.93P2O5-3.57Al2O3-15Na2CO3-20SiO2 phosphosilicate glass are studied in the biconical fiber-microsphere coupling system in this paper.A single-mode semiconducter laser with the center wavelength at 976 nm and line-width 0.15 nm is used as a pump source.The blue-shifted cooperative luminescence centered at 476.1 nm is obtained in the Yb3+-doped phosphosilicate microsphere.And a suitable model may be applied to explain the reason for the 11.9 nm blue-shift in this process.Meanwhile, the single-mode laser(at 1058.26 nm) and multimode laser oscillations(from 1060.02 to 1126.08 nm) have also been obtained as the result of resonant oscillation in microsphere cavity.In addition, for the first time so far as we know a self-stimulated cascaded Raman laser is observed in the same phosphosilicate microsphere, which is generated by the down-conversion laser of Yb3+.When the pump power is 8.53 mW, a two-order cascade Raman laser is generated,which extends the laser wavelength to near 1300 nm