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Through theoretical and experimental research, the viscoelastic mechanical model of optical fiber coupler in the process of fused biconical taper was established, with which, the numerical analysis under non-uniform temperature field was realized.

基于理论与实验研究，建立了光纤耦合器熔融拉锥过程的粘弹流变力学模型，并给出了光纤耦合器非均匀温度场条件下的流变过程数值分析，获得了拉锥速度、熔融温度等流变工艺参数对器件应力分布与器件性能的影响规律。

Based on the relation between modal amplitude and phase in the mode conversion of the few mode fiber, a novel configuration of an asymmetric biconical fiber and a fiber mode converter is presented to realize the nonreciprocal propagation in optical fibers. Preliminary feasibility is demonstrated both theoretically and experimentally.

基于少模光纤中模式转换的振幅和相位关系，提出采用不对称双锥光纤与光纤模式转换器的组合结构实现光纤中非互易传输的技术构思，从理论和实验上进行了初步的可行性论证。

Based on deep understanding on the relation between the properties of biconical fibers and the fusion temperature, a problem of fusion temperature monitoring is solved by means of a ceramic microheater and a fiber pyrometer. Effects of the fusion temperature on optical properties of biconical fibers are studied quantitatively. Biconical fiber devices with various filtering spectra are fabricated. Experimental results agree well with theoretical predictions.

根据对双锥光纤成形及光学特性与加热温度的深入理解，采用陶瓷管辐射加热和光纤高温传感新技术，解决了长期以来熔锥温度不易监测的关键技术难点，定量研究了熔锥温度对双锥光纤光学特性的影响，研制出多种具有不同滤波谱形状的双锥光纤器件，实验与理论模型预测的结果一致。

Fiber coupler is one of the most important devices among fused taperfiber devices. Its usage ranks second among the optical passive devices.It is used for separating or coupling light. At.present, it is fabricated withfused biconical taper technology at large.

熔锥型光纤器件中最为典型的器件是光纤耦合器，其用量在光无源器件中居第二位，其功能是使传输中的光信号在特殊结构的熔锥区发生耦合，实现分光。

Taking the fiber coupler as represent, aiming at the performanceproblem of the fiber coupler which is used in the market, such as theoptical performance differences of accepted products, technologicaloptimization and stability reflected by the low rate of finished products,how to reduce excess loss, and so on. From the view of manufacture of rheological formation, the research of experiment and theory has beendeveloped. The effects of rheological technological parameters such asdrawing speed and fused temperature on the optical performance,microstructure and the process of rheological formation have beeninvestigated. It is discovered that the present heating mode of combustinggas can\'t satisfy with the rheological manufacturing technological needof high performance fiber devices. A new resistance heating system is putforward, designed and manufactured, and a new fused biconical tapermachine is developed.

论文以光纤耦合器为代表，针对目前市场上广为应用的光纤器件存在的性能问题，如合格产品的光学性能差异，成品率不高所反映的制备工艺优化与稳定问题，如何进一步降低附加损耗等，从光纤耦合器流变成形制造的角度，分析了流变制造工艺参数如拉锥速度与熔融温度及其扰动对流变制造成形过程、微观结构与器件光学性能的影响，发现现有燃烧气体火焰的加热方式不能满足高性能光纤器件的流变制造技术要求，提出、设计并制造了一种新型的电阻加热系统和熔融拉锥机。

Damage of optical materials induced by SBS process under biharmonic laser irradiation.

双谐激光场作用下SBS过程诱导的光学材料破坏；。

Damage of optical materials induced by SBS process under biharmonic laser irradation.

双谐激光场作用下SBS过程诱导的光学材料破坏。

Head to tail type: front is a dense source of the corresponding optical galaxy, and then there are several pairs of gradually increasing bijection of electronic sources and dragged gradually widened the scope of the spectrum index steepens, the intensity gradually weakened radio tail.

头尾型：前面是一个有光学星系对应的致密源，随后有几对逐渐增大的双射电子源并拖着范围逐渐增宽、频谱指数逐渐变陡、强度逐渐减弱的射电尾巴。

Study and fabrication of binary optical element for ICF target uniform illumination.

实现ICF束匀滑的二元光学器件设计与制作。

The theory of image formation with binary optical element is developed in Chapter four to describe and predict the system's performance.

第四章详细讨论了二元光学元件三维光谱、空间成像原理，预计了成像系统特性，建立了数学模型。

A small, rubber-headed hammer used in examination or diagnosis by percussion.

叩诊槌用在通过''。'振荡'。''所作的检查或诊断中的橡皮头的''。'小'。''槌

Affixes are limited in number in a language, and are generally classified into three subtypes, namely, prefix, suffix, and infix, depending on their position with reference to the root or stem of the word.

语言中词缀的数量总是有限的，根据它们跟词根或词干的相对位置，一般可以把词缀分外三小类：前缀，后缀和中缀。