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Copyright of Journal of Chongqing University of Technology (Natural Science) is the property of Chongqing University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shanghai Jiaotong University (Science) is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Oil Drilling & Production Technology / Shiyou Zuancai Gongyi is the property of Shiyou Zuancai Gongyi Bianjibu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Study on Optical Communications / Guangtongxin Yanjiu is the property of Study on Optical Communications Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Guangxi Normal University - Natural Science Edition is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Study on Optical Communications / Guangtongxin Yanjiu is the property of Study on Optical Communications Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This work highlights the exploitation of fibers from a promising plant, commonly called Diss, in polymer matrix reinforcement. In this context, various untreated and treated (with acetic acid, silane, NaOH, thermal) Diss fibers were used to reinforce a thermoplastic matrix, polypropylene (PP). The effect of fiber treatments was evaluated at a ratio of 10% (by mass) of fiber, using mechanical, microstructural and physical characterization. A fiber content optimization study was carried out after choosing the fiber treatment by varying the fiber content from 10% to 40%. The microstructure observations showed a multi-layer structure for the biocomposites studied. The particular morphology of Diss fibers, with the presence of thorns, seems to improve the mechanical adhesion between the two phases. For 10% fiber content composites, the incorporation of the different fibers in the PP matrix led to improvements in most mechanical properties. The biocomposite reinforced with NaOH treated fibers (NPP-10%) showed the best mechanical performance with an improvement of 30%, 22% and 9% in tensile modulus, bending modulus and bending stress, respectively. For the fiber content variation, the NPP was retained, and an enhancement in the tensile modulus was found when the fiber content was below 20%. [ABSTRACT FROM AUTHOR]

Copyright of Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The mode field diameter of optical fiber is very important for evaluating the performance of optical fiber. The far-field variable aperture method is commonly used to measure the mode field diameter in industry. At present, more and more apertures are needed in various measuring instruments based on the far-field variable aperture method, which results in long measurement time and low efficiency. In view of this problem, this study uses the optical power data measured by the OFM optical fiber measuring instrument, and applies the two-stages polynomial function fitting method to the processing of the mode field diameter. The experimental results show that the stability of the measurement results at 20 apertures is better than that of the original direct fitting method. On the premise of meeting the measurement accuracy, the original 20 apertures can be reduced to 10 apertures. The proposed method improves the measurement speed of the instrument and can meet the needs of optical fiber manufacturers for rapid testing in on-site quality control. [ABSTRACT FROM AUTHOR]

Copyright of Transactions of Nanjing University of Aeronautics & Astronautics is the property of Editorial Department of Journal of Nanjing University of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

在电力系统中,当受到强大的冲击电流时,电力光缆将在高于导体最高工作温度10%的温度场环境下工作,长时间的高温老化工况状态对光纤复合低压电缆（OPLC）光单元中的光纤造成极大的负效应,严重地影响了整个电网的安全运行。针对上述问题,为了研究单模光纤受热前后机械性能变化情况,分析高温老化对光纤的损伤程度,文章通过模拟高于以聚氯乙烯绝缘的OPLC导体温度10%的温度场环境,测试了不同温度和老化时间段下单模光纤的断裂强度、断裂伸长率和光纤涂层剥离力等光纤机械性能,基于测试数据,运用线性拟合的统计方法,研究了在该温度场环境下老化前后光纤机械特性的变化趋势。试验结果表明,OPLC中光纤的应力腐蚀敏感性参数比涂覆剥离力特性受热更敏感,随着老化时间增长,不同老化时长后涂覆剥离力比应力腐蚀敏感性参数的差值变化量更大,耐热性能更差。基于机械性能的测试结果,文章提出了增加光单元耐热层的优化意见。

Copyright of Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

光纤光缆技术是我国推进"宽带中国"战略的重要领域。文章以全球光纤光缆专利为研究对象,采用专利分析的方法,梳理了光纤光缆专利申请趋势,从光纤预制棒、光纤和光缆等流程的角度,分析了光纤光缆技术分布和最新技术动向,并剖析了国内外主要机构的技术布局和核心专利技术。最后,提出了重视专利战略、谋划全球专利布局,探索潜在的国外市场;围绕国家光通信战略和产业技术升级,加强未来重点技术研发;鼓励中小企业创新技术发展、营造产业集聚效应等建议。

Copyright of China Textile Leader is the property of China Textile Information Center and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

针对光子晶体光纤的非线性问题,设计了新型准光子晶体光纤结构。所设计的准光子晶体光纤的纤芯采用圆形空气孔,中心孔作为缺陷,前3层通过小孔结构形式实现内包层。结构的电磁场分析表明:随着入射角的增大,横向磁场模式的禁带会明显变窄,横向电场模式的禁带会明显变宽。参数分析后得出以下结论:在光通信的1 550nm波长附近,结构的色散曲线表现了高平坦的特性;通过控制孔间距或者空气孔层数能实现限制损耗的控制,进而将损耗限制到非常小甚至为0的阶段。

为解决信息量快速增长带来的传输容量不足问题,提出了一种可用于光子轨道角动量（OAM）传输的新型光纤,并对其研制技术进行了研究。采用等离子体化学气相沉积（PCVD）技术解决了高折射率环形纤芯结构光纤预制棒应力损伤难题,通过反复的工艺研究与验证,形成了环形纤芯光纤高稳态拉丝工艺技术,实现了该光纤的研制。该光纤具有环形结构,在实现±1、±2阶OAM信号传输的同时,光纤的传输损耗仍能保持较低的水平,可满足较长距离的OAM大容量信号传输需求。

Copyright of Chinese Journal of Liquid Crystal & Displays is the property of Chinese Journal of Liquid Crystal & Displays and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Soil water content has great spatial-temporal variability, so accurate field-scale soil water content acquisition with high spatial-temporal resolution is of grave significance for precision agriculture. The distributed temperature sensing (DTS) technology combined with the principle of heat pulse probe is expected to achieve this goal; however, there isn’t research to compare and evaluate the advantages and disadvantages of different methods to estimate soil water content using heated DTS technology. In this study, the indoor soil tank tests were carried on to heat the carbon-fiber optical fiber embedded in sand, and the temperature variations along the optical fiber at different water content were measured by the DTS. The relationship between soil water content and maximum temperature rise, cumulative temperature rise and thermal conductivity were established, and the measurement accuracies of soil water content derived from the above mentioned 3 estimated methods were compared. The results showed that the temperature fluctuation of the optical fiber decreased with the increase of the sampling spacing or the time interval, and the reasonable sampling spacing and time interval could control the temperature fluctuation within a range between -0.1 and 0.1 °C. The temperature rise value of optical fiber decreased with the increase of soil water content. The temperature rise was the highest for the dry sand and was the smallest when the soil was saturated. The maximum temperature rise and cumulative temperature rise had a similar trends with the change of water content, and decreased exponentially with the increase of water content. The slope of curve decreased gradually with the increase of water content, and the sensitivity to water content gradually reduced. However, there was an increased exponential relationship between thermal conductivity and water content. With the increase of water content, the slope of curve did not decrease obviously. In the whole range of water content of sand, thermal conductivity had a good sensitivity to water content. For thermal conductivity method, at the all range of water content, the scatter points between measured and predicted values were on or near the 1:1 line, showing good predictions. For maximum temperature rise and cumulative temperature rise methods, the scatter points were all around the 1:1 line when the water content range was in the 0-0.1 m3/m3, which had better prediction results, while the water content range was in the 0.1-0.25 m3/m3, where the scatter points were below the 1:1 line, which wound underestimate the moisture content. For the water content range was greater than 0.25 m3/m3, the scatter points were mostly above the 1:1 line, which overestimated the moisture content. The measurement accuracy of the thermal conductivity method was higher than that of the maximum temperature rise method and of the cumulative temperature rise method regardless of the low (0-0.1 m3/m3), medium (0.1-0.2 m3/m3) and high (0.2-0.35 m3/m3) water content ranges. The measurement accuracies of the 3 methods decreased with the increase of water content. The root mean square error of the thermal conductivity method was 0.015 m3/m3, which was lower than that of the maximum temperature rise method (0.038 m3/m3) and the cumulative temperature rise method (0.050 m3/m3). All of the 3 methods could measure soil water content accurately, but the accuracy of thermal conductivity method was highest. However, although maximum temperature rise and cumulative temperature rise methods could achieve certain accuracy, they had no physical meanings, the relationships between those 2 and water content were influenced by many factors, such as optical fiber characteristics and physical properties of soil. The thermal conductivity method had physical significance and was only related to the physical properties of soil. Moreover, the relationship between thermal conductivity and water content had been studied, and a lot of thermal conductivity models have been developed, which provided a simple and feasible method for estimating water content through soil thermal conductivity. Therefore, it was very attractive to measure water content by the active heating optical fiber-DTS using thermal conductivity method. This study provides guidance for water content measurement methods using DTS. It is of great significance to develop high-time-resolution in-situ monitoring techniques for soil water content at different spatial scales, and the ultimate goal is to accurately understand the water content dynamics in the field to guide the precision irrigation. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Henan University of Science & Technology, Natural Science is the property of Editorial Office of Journal of Henan University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The principles and applications of optical fiber communication are introduced. The feasibility of the experiment is analyzed. Parameters of circuit are designed and provided. Requirements for opto-electronic elements are put forward. The laboratory self-made fiber-coupling device is presented. The whole process of design, debugging and installation of the experimental board should be totally completed by students themselves. Students could learn to solve common problems in the experiment. During the experiments, they are required to put forward frequency demodulation strategies, and understand the operation manner of output and transmitting circuit of Bluetooth signal. Through the experiments, students can deepen their understanding of theoretical knowledge in this curriculum. Meanwhile, students can also have a better comprehension of the experimental design methods of optical communication system from practical perspective. This curriculum can cultivate students’ team spirits and develop their abilities of analyzing and solving practical problems. At the same time, teaching benefits teachers as well as students. Therefore, the quality of this curriculum can be improved by the efforts of students. We strive to improve teaching quality and provide better learning methods and research conditions for students who are interested in further studies. [ABSTRACT FROM AUTHOR]

介绍了一种大有效面积单模光纤的数值设计分析与PCVD（等离子体化学气相沉积）制备工艺,该光纤的有效面积达到133μm2,同时在1 550nm处衰减系数优化到0.183dB/km,弯曲损耗优化至0.45dB/圈（弯曲半径7.5 mm）。在双偏振DFT-S CO-OFDM 4QAM/16QAM（4进制/16进制正交振幅调制的离散傅里叶变换扩展相干光正交频分复用）调制信号下,对该光纤在100Gbit/s和400Gbit/s系统的误码率和Q值等传输性能进行了验证。结果表明,该光纤能有效改善最佳入纤功率和非线性效应,可使传输距离提升30%,能有效优化400Gbit/s传输系统,并且在FTTx领域有着广泛的应用前景。

Copyright of Wool Textile Journal is the property of National Wool Textile Science & Technology Information Center and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

介绍了一种新型非光子晶体结构弯曲不敏感单模光纤的设计与制备。采用数值计算方法分析了光纤的下陷型波导结构,通过PCVD（等离子体化学气相沉积法）工艺获得了1 310nm波长的模场直径为4.3μm、1 550nm波长的模场直径为5.4μm的光纤样品,与G.652D光纤的双点接续损耗低至0.15dB,满足普通跳线的接续要求。该样品在2.5mm弯曲半径条件下弯曲10圈,其1 550nm波长的弯曲损耗优化至0.01dB,可适用于任何苛刻的FTTx应用环境,并有替代铜缆成为消费电子中理想传输介质的潜力,同时还可用于各种光电器件中。

为了探究高湿环境对光纤动态疲劳的影响,实验选取多组光纤,分别在高湿和一般环境下采用两点弯曲法测量光纤的动态疲劳。通过对动态疲劳曲线和实验数据进行分析发现,在高湿环境下,光纤所能承受的断裂应力会下降,且测试时的应力速率越高,断裂应力下降越明显,进而影响光纤动态疲劳参数Nd值。

Copyright of China Textile Leader is the property of China Textile Information Center and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

光纤的可靠性是保证光网络寿命的关键,可靠性由光纤的强度分布和疲劳行为共同决定。应用光纤的强度分布数据和蒙特卡洛方法,分析了筛选强度、应力腐蚀敏感性参数和载荷水平等因素对光纤可靠性的影响。分析结果表明,筛选强度的提高可改善筛选后光纤的强度分布,但同时会导致部分筛选后光纤的强度明显降低;按照基于幂定律理论的光纤疲劳行为模型,应力腐蚀敏感性参数的提高和光纤受到静载荷水平的降低可以提高光纤的理论寿命。

首先介绍了G.657单模光纤制造技术的演进情况,然后提出采用"三步法"制造G.657弯曲不敏感单模光纤的工艺技术,设计并制造出两种类型的弯曲不敏感单模光纤。其中,G.657A2光纤在弯曲半径为7.5mm时,1 550和1 625nm波长的弯曲损耗分别为0.063和0.136dB,1 383和1550nm波长的衰减系数分别为0.272和0.188dB/km;G.657B3光纤在弯曲半径为5mm时,1 550和1 625nm波长的弯曲损耗分别为0.067和0.122dB,1 383和1 550nm波长的衰减系数分别为0.276和0.182dB/km。测试结果表明,该"三步法"预制棒技术能够生产出高抗弯、低损耗的小弯曲半径单模光纤,该光纤的关键技术指标均优于ITU-T国际标准。

文章介绍了光纤传感器的应用和S状光纤声发射（Acoustic Emission,AE）传感器的结构,给出了此类光纤AE传感器与超声波之间的相互作用,以及基于光纤Michelson干涉仪的此类光纤AE传感器灵敏度的理论分析,最后得到的灵敏度理论分析结论与MATLAB模拟结果相一致。

光纤流量传感器是一种基于光信号的新型流量传感器。光纤中传输的光信号受到流量的作用,其强度、相位、波长等参数都会发生变化,通过检测光信号相关的变化可得到相应的流量大小。文章就几种类型的光纤流量传感器的工作原理及特性进行了阐述,对它们的优缺点进行分析比较,并提出了改进方案。

Copyright of Transactions of Beijing Institute of Technology is the property of Beijing University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

文章研究了高强度石英玻璃光纤的动态疲劳性能与拉丝环境相对湿度的函数关系。光纤是在采用石墨感应加热炉加热,并在控制温度、相对湿度和拉丝环境尘埃粒子数的条件下拉制的。所谓拉丝环境指的是从感应加热拉丝炉至涂覆点之间的空间。通常,人们采用两种不同的加载方式,即拉伸和两点弯曲来测量拉制的光纤的动态疲劳。业已发现,拉丝湿度对用张力法加载方式测得的光纤的动态疲劳起着决定性的影响。

文章主要介绍OFC-NFOEC（Optical F iber Commun ication Conference&National F iber Optics Engineers Conference）会议的技术内容和其他,包括:系统和器件。这些内容作者认为是有情景、有特点和有兴趣的。在系统中,重点介绍了光纤到家庭（FTTH）、自动交动光网络（ASON）以及IP光网络。在器件中,介绍了光开关、波长可调器件和平面光波电路（PLC）。文章主要读者是中国科技人员。所有的介绍都是粗略的,需要进一步了解的读者可以查阅有关文献（见编号）。

文章应用ZEMAX软件模拟了管芯与光纤在不同偏移量下的耦合效率,并进行了实验验证。结果表明,6.5mm焦距的TO-CAN（晶体管外壳封装）与端面倾斜8°的光纤,在管芯偏移100μm时,耦合效率最大,模拟值为21.9%,实验值为21.32%;5.8mm焦距的TO-CAN与端面倾斜6°的光纤,在管芯偏移80μm时,耦合效率最大,模拟值为11.2%,实验值为10.42%;并且实验结果和仿真结果一致。

光纤紧套被覆层剥离力是体现产品质量的一项重要指标。由于前期缺乏试验数据的积累,在相关标准中未对这一指标做出明确规定。文章对光纤紧套层剥离力进行了试验性研究,试验发现由于紧套光纤的被覆层较厚,易出现"塞积"效应。"塞积"效应对判断紧套光纤剥离力的大小有重要的影响,而它本身与试验时的刀具移动距离、移动速率及总剥离长度等因素有关,这些结论对科学规范紧套层剥离力的有效范围提供了重要的科学试验依据,同时可作为开展下一步研究工作的基础。

文章从市场需求、技术经济特点、系统与传输光纤的现状等几个方面分析城域 WDM技术 .

介绍 2 0 0 1年 1 0月在日内瓦召开的 ITU- T第十五研究组会议关于光纤光缆特性及测试方法研究的最新进展 ,以及相关技术的发展动态

采用静电自组装技术在石英玻璃光纤和显微镜载玻片上制备了二氧化钛胶体与阴离子聚电解质 PSS、二氧化硅胶体与阳离子聚电解质 PDDA的复合薄膜 ,研究了薄膜的光反射性能 .在光纤端面上交替沉积光学厚度为λ/4的 PSS/Ti O2 高折射率薄膜和光学厚度为λ/4的 PDDA/Si O2 低折射率薄膜 ,可以获得λ/4多层高反射膜 ,使样品表面的反射性能大大提高 .

概括了光纤预制棒制造技术的现状 ,对各种工艺的发展趋势进行了详细分析 ,并对光纤预制棒制造新技术进行了介绍 .

通信距离的延长和 WDM通道数的增加使光纤非线性效应日益显著 ,如何准确地测量非线性系数的大小成了人们关注的问题 .文章介绍了几种非线性系数的测量方法 ,并对它们的优缺点进行了较全面的分析和比较 .

介绍 SDH技术基本原理、SDH传输广播电视信号过程以及 SDH技术在江苏广电光缆网中的应用

城域网 （ MAN）概念是由计算机网络演化而来 ,数据通信等电信新技术的发展赋予城域网新的内涵 .DWDM应用于城域网时有一些不同的功能要求 ,包括 Metro DWDM系统的结构、光纤技术、器件技术等关键技术

介绍 2 0 0 1年 2月在日内瓦召开的 ITU- T第十五研究组会议关于光纤光缆特性及测试方法研究的最新进展 ,以及相关技术的发展动态

介绍光纤分析的数值基础和程序设计过程 ,并给出最后软件 .文中利用该软件设计分析了新型的三抛物线型光纤的传输特性

文章分析了影响光纤通信系统性能的主要因素,介绍了在理论分析的基础上建立的单模光纤信道仿真模型;还介绍了判决反馈均衡器（DFE）的基本结构和最小均方（LMS）误差算法,并用MATLAB软件仿真了采用LMS算法对10 Gbit/s光纤信道进行自适应均衡的性能。仿真结果表明,LMS算法简单、高效,能有效消除光纤色散和偏振模色散（PMD）引起的码间干扰,比较适合对均衡速度要求较高的光纤通信系统。

全球电信骨干网的单通道传输速率已经向40 Gbit/s甚至160 Gbit/s发展,光纤作为主要的传输线路,其损耗和色散阻碍了通信传输距离和容量的扩展。为了适应现有通信网的发展需要,文章结合当前流行的现场可编程门阵列（FPGA）技术,基于硬件描述语言实现了光纤技术中的偏振模色散（PMD）自适应技术,保证了PMD自适应补偿技术的稳定性。