纤芯

详细介绍了各类纤芯材料。

Various fibre core materials are introduced in the paper .

在火焰区，纤芯的温度低，表层的温度高，温度相差达1.5℃；

In the flame field , the temperature of the fibre core is higher than that of the surface and the difference is about 1.5 ℃ .

掺Ge石英纤芯光纤的耐辐照实验

Experiment on radiation-resistance of Ge-doped silica core optical fiber

其主要工作和成果如下：（1）利用有限元分析法研究了W型和纤芯凹陷型剖面结构非零色散位移光纤的设计原理和传输特性。

The design principle and transmission properties of non-zero dispersion-shifted fiber with core-depressed and W type of profile are studied by finite-element method .

研究了压电涂层PMMA纤芯塑料光纤中的相位调制。

The phase modulation within piezoelectric coating PMMA core plastic optical fiber ( POF ) is demonstrated .

根据其选模特性，我们提出了一种大纤芯的实芯Bragg双模光纤放大器。

According to the mode properties of Bragg fiber , we present a kind of large solid-core Bragg fiber amplifier .

接着，在几百毫秒内，机械压力逐渐减弱，纤芯温度逐渐增加，这两个因素导致x偏振和y偏振的光栅波长都红移。

Both grating wavelengths of x - and y-polarization subsequently experience a red-shift due to the relaxation of mechanical stress and the increasing core temperature in many microseconds .

相对于一般的光纤放大器，该设计增大了纤芯的面积，光场集中在芯区，基模为TE（01）模。

Compared to the general fiber amplifiers , our design is special for the large solid core , light confinement in the core and TE_ ( 01 ) fundament mode .

利用耦合模理论，推导出了其中一个纤芯写有Bragg光栅的双芯光纤耦合器的完整的耦合模方程。

The integrated couple mode equations of the mismatched twin core fiber coupler with Bragg grating written on one core are presented through use of the couple mode theory ( CMT ) .

本文对PCF的选择性空气孔塌缩技术进行了详细地介绍，并对应用该技术制成的纤芯变形PCF和模式转化器进行了理论分析，以及相应的数值模拟和实验研究。

This thesis describes this technique in detail , and studies anamorphic core-shape PCF and mode converters based on controlled air hole collapse theoretically and experimentally .

设计了一种大纤芯实心Bragg光纤，并从理论上证明，利用这种光纤可以实现大纤芯的双模光纤放大器。

This paper designs a kind of large solid-core Bragg fibers , which can be used as large solid-core double mode fiber amplifiers , and it can make the manufacture of fibers simplify .

本文对全光纤调Q激光器的优化设计进行了理论分析，给出了调Q脉冲特性对纤芯半径、腔的往返损耗及泵浦功率等参数的依赖关系。

A model for the optimization of Q switched all fiber laser has been reported . This model predicts how the Q switched pulses depend upon the fiber radius , the loss coefficient of the cavity and the pump power .

与普通单模光纤相比，小纤芯PCF具有非线性效应强、布里渊增益大的特点，适合作为布里渊光纤激光器的增益介质。

Compared with common single mode fiber , the small core PCF has higher non-linear coefficient and larger Brillouin gain , and is suitable for the gain medium of Brillouin fiber laser .

为提高普通布里渊激光器的输出功率和激光效率，提出一种基于小纤芯光子晶体光纤（PCF）的环形腔布里渊光纤激光器。

To improve the output power and the laser efficiency compared with common fiber Brillouin lasers , a small core photonic crystal fiber ( PCF ) based ring-cavity Brillouin fiber laser was presented .

光纤包层为F掺杂，纯SiO2纤芯，低OH－根含量，经核辐照后的实验结果表明，光纤瞬态峰值感应损耗最低为3.4dB／m·krad。

The fiber is F-doped cladding and the core is pure SiO2 with low OH & content . It is shown that through the nuclear radiating experiment , minimum transient induced loss is 3 . 4dB / m. krad .

向塑料光纤纤芯材料纯PMMA中引入链转移剂正丁硫醇（nBM）以控制摩尔质量。

Chain transfer agents ( n-BM ) was applied to pure PMMA , which was used as the core materials in polymer optical fiber ( POF ), to control the molecular weight of PMMA .

但根据耦合模扩散理论，与LP0n模对应的一组亮环最邻近的2n个亮环所携带的功率能耦合进LP0n模，被纤芯吸收。

But according to coupled modes diffusion theory , 2n bright loops that are adjacent to the n bright loops corresponding LP_ ( 0n ) modes will couple into LP_ ( 0n ) modes , then be absorbed .

用WKBJ方法推导了2个积分，分别用以计算两部分不能被双包层光纤（DCF）纤芯吸收的模式数量；

Then two integrals have been derived by using WKBJ method to calculate the number of two different parts of modes which are not absorbed by the core of double-clad fiber ( DCF ) .

利用非等温等离子体化学气相沉积（PCVD）工艺制备了一种适合于大容量高速率长途干线网与城域网的中芯下陷型纤芯结构非零色散位移光纤。

A non zero dispersion shifted fiber with core depressed profile for large capacity and high bit rate backbone network and metropolitan area network is designed and fabricated by plasma chemical vapor deposition ( PCVD ) process .

接着用Comsol模拟了填充液晶后的折射率引导型的光子晶体光纤的温度传感特性，比较了不同纤芯半径的情况。

Then temperature sensing properties of photonic crystal fiber of refractive index guide type which is filled with liquid crystal is simulated by Comsol . The situations of different core radius are compared .

采用包层模剥除技术，实现对DCF纤芯泵浦光吸收系数的直接测量，与单包层光纤测量数据比较，相对误差5%。

By using the technique of stripping clad modes , we measure the absorption coefficient about pump light in the core of DCF directly . By comparing with the data obtained from single-clad fiber , its relative error is less than 5 % .

本文采用了一种简单的功率监测法，观察了KrF准分子激光对掺锗光纤折射率影响的非线性过程.观察到子纤芯折射率扰动过程中非稳定现象、饱和现象和折射率扰动的非线性。

Adopting a simple method to monitor the outgoing power of Ge doped optic fiber , the non stability , saturation , and the non linear of index disturbance were observed when the fiber was exposed by KrF laser pulses .

此外，通过优化光纤纤芯各层的掺杂原子浓度，在1530nm处光纤的氢损降到了0.01dB/km。

Furthermore , the hydrogen induced attenuation at 1530 nm decreases to the value of less than 0.01 dB / km by optimizing the dopant concentration of different core layer .

混合纤芯光子晶体光纤的色散特性研究

Investigation of dispersion characters in photonic crystal fiber with hybrid core

应力型大模面积光子晶体光纤的纤芯设计

Design on core parameters of stress-induced large-mode-area photonic crystal fiber

亚微米纤芯光纤芯径大小与光学特性的关系

The Relationship Between the Diameter of Submicro-diameter Optic Fiber and Optical Properties

电力系统光缆纤芯选型分析

Selections of optical fiber type used in electric power system communication networks

多层单模光纤纤芯椭圆形变引起的双模色散

Polarization Mode Dispersion in the Elliptical Core Single-Mode Fibers with Layered Structure

改进纤芯分配图在工程设计中的应用研究

Application of fiber core distribution diagram in SDH design project

光子晶体光纤的纤芯等效半径分析

Study of Equivalent Core Radius of Photonic Crystal Fibers