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期刊论文 6

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倍频 1

光纤；光纤器件；基于二氧化硅特种光纤 1

电光调Q开关 1

绿光激光器 1

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The effect of orbital radiation therapy on thyroid-associated orbitopathy complicated with dysthyroidoptic neuropathy

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《医学前沿（英文）》 2017年 第11卷 第3期   页码 359-364 doi: 10.1007/s11684-017-0528-5

摘要：

Thyroid-associated orbitopathy (TAO) is an inflammatory autoimmune disorder. The most serious complication of TAO is dysthyroid optic neuropathy (DON), which can lead to permanent vision loss because of volume expansion in the orbital apex. Orbital radiation therapy (ORT) is an anti-inflammatory treatment used in the treatment of active TAO. Clinical studies support radiotherapy as having a modest effect on DON, and early radiotherapy may protect against disease progression to DON. Current studies suggest that radiotherapy is generally safe. However, risks still exist in some cases. The possible effects of radiotherapy on TAO, especially complicated with DON, are reviewed. The effects of radiotherapy on DON are not completely known, and evidence from standardized, prospective, and multicenter clinical trials is still lacking.

关键词： thyroid-associated orbitopathy     dysthyroid optic neuropathy     orbital radiation therapy    

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Structural health monitoring with fiber optic sensors

F. ANSARI

《机械工程前沿（英文）》 2009年 第4卷 第2期   页码 103-110 doi: 10.1007/s11465-009-0032-y

摘要： Optical fiber sensors have been successfully implemented in aeronautics, mechanical systems, and medical applications. Civil structures pose further challenges in monitoring mainly due to their large dimensions, diversity and heterogeneity of materials involved, and hostile construction environment. This article provides a summary of basic principles pertaining to practical health monitoring of civil engineering structures with optical fiber sensors. The issues discussed include basic sensor principles, strain transfer mechanism, sensor packaging, sensor placement in construction environment, and reliability and survivability of the sensors.

关键词： Bridges     structural health monitoring     smart skins     cracks     strains     displacements     fiber optic sensors     FBG     structures    

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Distributed fiber optic monitoring of a CFA pile with a central reinforcement bar bundle

Yi RUI, Nicholas de BATTISTA, Cedric KECHAVARZI, Xiaomin XU, Mei YIN

《结构与土木工程前沿（英文）》 2021年 第15卷 第1期   页码 167-176 doi: 10.1007/s11709-020-0581-z

摘要： In this paper, we present an application of distributed fiber optic sensor (DFOS) technology to measure the strain of a continuous flight auger (CFA) test pile with a central reinforcement bar bundle, during a static load test carried out in London. Being distributed in nature, DFOS gives much more information about the pile performance as compared to traditional point sensors, such as identifying cross-sectional irregularities or other anomalies. The strain profiles recorded along the depth of the piles from the DFOS were used to calculate pile deformation (contraction), shaft friction, and tip resistance under various loads. Based on this pile load test, a finite element (FE) analysis was performed using a one-dimensional nonlinear load-transfer model. Calibrated by the shaft friction and tip resistance derived from the monitored data, the FE model was able to simulate the pile and soil performance during the load testing with good accuracy. The effect of the reinforcement cage and central reinforcement bar bundle were investigated, and it was found that the addition of a reinforcement cage would reduce the pile settlement by up to 20%.

关键词： continuous flight auger pile     static load test     central reinforcement bar bundle     distributed fiber optic sensor     finite element     load transfer    

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Digitalization optical open loop test system for fiber optic gyroscope

ZHANG Deng-wei, SHU Xiao-wu, MU Xu-dong, LIU Cheng

《机械工程前沿（英文）》 2006年 第1卷 第4期   页码 434-438 doi: 10.1007/s11465-006-0053-8

摘要： In order to receive and process the open loop signal from fiber optic gyroscopes speedily, stably and expediently, and to realize the amity interface between human and machine, a digital system that can convert GPIB (general purpose interface bus ) parallel bus into Universal Serial Bus is developed. All the interface functions of GPIB and the hardware system are realized through FPGA. With a digital sampling and processing system designed with VC++ in Windows platform, the real-time controlling procedure, high-speed receiving and sending data can be carried out, and the results can be displayed too. So the design of the system is flexible, the reliability and the stability are improved, error rate is no more than 10, the highest bit rate is 8 MB/s and the open loop detection system for optic fiber gyros achieves standardization and complete digitalization simultaneously.

关键词： stability     real-time controlling     standardization     controlling procedure     complete digitalization    

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新型电光调Q腔内倍频绿光激光器

陈飞,霍玉晶,何淑芳,冯立春

《中国工程科学》 2000年 第2卷 第4期   页码 39-42

摘要：

本文报道了一种新型的LD泵浦Nd:YVO4-KTP电光调Q绿光激光器，用单块KTP晶体同时作为电光调Q开关和Ⅱ类相位匹配的倍频晶体，减少了腔内损耗，提高了效率，得到了脉宽为12ns的绿光脉冲序列。激光器采用纵向同轴泵浦方式、独特的整体控温技术和小焦距非球面聚焦透镜，并把全部元件固化为一个整体，进一步提高了器件的效率、激光的输出功率和光束方向的稳定性。

关键词： KTP     绿光激光器     电光调Q开关     倍频    

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新型硅基光纤研究进展 Special Feature on Optoelectronic Devices and Inte

Ting-yun WANG, Fu-fei PANG, Su-juan HUANG, Jian-xiang WEN, Huan-huan LIU, Li-bo YUAN

《信息与电子工程前沿（英文）》 2019年 第20卷 第4期   页码 481-489 doi: 10.1631/FITEE.1900017

摘要： 综述了两类新型光纤的最新研究进展，主要包括掺铋、铝、铈等元素的二氧化硅光纤和微结构多芯光纤。作为掺杂特殊元素的光纤，铋铝共掺杂二氧化硅光纤的荧光光谱波长为1000到1400 nm，半高宽（FWHM）约为150 nm，可用于光纤放大器和激光系统。铈掺杂光纤的激发和发射中心波长分别约为340和430 nm。在纤芯中掺杂高浓度氧化铝的蓝宝石衍生光纤（SDF）经电弧放电加热、冷却处理后可形成莫来石。SDF可进一步开发为能承受1200 °C高温的法布里—珀罗干涉仪，用于高温传感。由于强消逝场，微结构多芯光纤被广泛应用于生物光纤传感、化学测量等领域。同轴芯光纤是一种具有两个同轴双波导纤芯的新型光纤。将光纤端制备成锥状，能产生紧致聚焦光场，可应用于光学捕获和微粒操纵。本文讨论了这些新型光纤的研究进展。

关键词： 光纤；光纤器件；基于二氧化硅特种光纤    

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标题 作者 时间 类型 操作

The effect of orbital radiation therapy on thyroid-associated orbitopathy complicated with dysthyroidoptic neuropathy

null

期刊论文

Structural health monitoring with fiber optic sensors

F. ANSARI

期刊论文

Distributed fiber optic monitoring of a CFA pile with a central reinforcement bar bundle

Yi RUI, Nicholas de BATTISTA, Cedric KECHAVARZI, Xiaomin XU, Mei YIN

期刊论文

Digitalization optical open loop test system for fiber optic gyroscope

ZHANG Deng-wei, SHU Xiao-wu, MU Xu-dong, LIU Cheng

期刊论文

新型电光调Q腔内倍频绿光激光器

陈飞,霍玉晶,何淑芳,冯立春

期刊论文

新型硅基光纤研究进展

Ting-yun WANG, Fu-fei PANG, Su-juan HUANG, Jian-xiang WEN, Huan-huan LIU, Li-bo YUAN

期刊论文