光纤

To realize single longitudinal-mode of the fiber laser, a ring configuration is devised. The single longitudinal-mode operation is realized by using a fiber Bragg grating as wavelength-selective element and a unpumped 2m-loog erbium-doped fiber which can produce stading-wave saturation effects in the cavity, Its tunable wavelength range is 42 nm, the output power is more than 3.5 dBm and the stability is less than ±0.005 dB.

为了实现光纤激光的单纵模，提出了一种环形腔结构，采用可调谐光纤Bragg光栅作为波长选择器件，与2m未抽运掺Er光纤产生驻波饱和效应，在1.55m波长处形成42nm激光输出，输出功率大于3.5dBm，功率稳定性优于士0.005dB。

Spatial holeburning caused by ununiform widening of erbiumdoped fiber barricades the fully gaincontrolled amplification of laser with single wavelength. A novel configuration of automatic gainclamped optical erbiumdoped fiber amplifier is presented, and a high-birefringence fiber Bragg grating is used to generate pumping lasers, peaks of which are written at 1549.3 nm and 1549.83 nm with a wavelength spacing of 0.53 nm.

掺铒光纤非均匀展宽引起的空间烧孔现象导致单波长激光并不能完全控制放大器增益，提出了一种新颖的自动增益控制掺铒光纤放大器的结构：即采用高双折射光纤布拉格光栅产生抽运光，其写制光栅的波峰对应的波长分别为1549.3 nm和1549.83 nm，波长间隔为0.53 nm。

With the improving technique and the emergence of more and more advance research production, fiber Bragg grating had become one of the most successful optic passive device.

摘要随着光纤光栅制造技术的不断完善和应用成果的不断出现，光纤光栅已成为目前最具有挑战性和最有发展前途的光纤无源器件之一。

With the improving technique and the emergence of more and more advance research production, fiber Bragg grating had become one of the most successful optic passive device.

随着光纤光栅制造技术的不断完善和应用成果的不断出现，光纤光栅已成为目前最具有挑战性和最有发展前途的光纤无源器件之一。

Because the length of optical fiber delay lines has direct effects on the volume of laser warning system, the optical loss and the false alarm ratio, the optical fiber delay lines are permuted and combined based on the property of the laser pulse and the optimization theory.

针对光纤延迟线的长度对激光告警器的体积，光学损耗，虚警率等因素有着直接的影响，在此利用激光脉冲的相关特性，通过最优化理论对光纤延迟线进行排列组合，从而解算出光纤总长度的最小值，为激光测向告警器优化设计提供了重要的理论依据。

First, our country optical fiber industry development survey 1st, optical fiber industry development review (1) starts Our country optical fiber industry start to the last century70's intermediate stages, then places such as Ministry of Posts and Telecommunication, machinery, electron department system and Beijing,Shanghai many units, all invested the strength, was engaged in the optical fiber and the optical fiber prefabricates the stick the development work.

我国光纤产业起步于上个世纪70年代中期，当时的邮电部、机械、电子部系统和北京市、上海市等地的诸多单位，都投入力量，从事光纤和光纤预制棒的研制工作。

The invention discloses an optical-fiber all-optical code converter, comprising a temperature control circuit as well as optical-fiber Mach-Zed interferometer, heat sink, semiconductor refrigerator, thermosensitive resistor and radiator, where the interferometer is composed of two cascaded 3dB couplers on the heat sink, the relation between length difference delta L of two arms of the interferometer and generated delay time difference delta T is that delta L=c.delta T/n, where c is light velocity in vacuum and n is refractive index of optical fiber; the thermosensitive resistor is used to detect temperature of interferometer, the temperature control circuit is used to compare feedback voltage of the thermosenstive resistor with a given voltage to regulate working current of the semiconductor refrigerator, and the semiconductor refrigerator refrigerates or heat two arms of the interferometer by the heat sink.

本发明公开了一种光纤型全光码型转换器，它包括温控电路和位于密封盒内的光纤型马赫-泽德干涉仪、导热热沉、半导体制冷器、热敏电阻以及散热片；干涉仪由位于导热热沉上的二个3dB耦合器级联而成，两臂的长度差ΔL与产生的延时差ΔT之间的关系为ΔL＝c。ΔT/n，c为真空中光速，n为光纤折射率；热敏电阻用于对干涉仪的温度进行探测，温控电路用于比较热敏电阻反馈的探测电压和设定电压，对半导体制冷器的工作电流进行调节，半导体制冷器通过导热热沉对干涉仪两臂同时进行制冷或加热。

Ningbo Jian Li Electronics Co., Ltd. are specializing in a variety of optical research and development, design, production and marketing of high-tech enterprises, is the nation's largest manufacturers of fiber-optic equipment, and products are mainly concentrated in the fiber optic adapter, connector, jump Line / pigtail, fiber optic beam loaded as well as the field wiring closet.

宁波健立电子有限公司是专业从事各种光通信器件的研发、设计、生产和销售的高新技术企业，也是国内最大的光纤器材生产厂商之一，产品主要集中在光纤适配器、连接头、跳线/尾纤、束装光纤以及配线柜领域。

For the case that there was no frequency detuning, the array was always in out-of-phase mode.

对于运行频率相等的两个光纤激光器，当两个光纤激光器初始相位差不为0时，相位锁定后的激光器阵列输出模式为异相模；对于运行频率不等的情形，给出了锁相运行对两个光纤激光器运行频率差的要求，并分析了降低这种要求的几种方法。

The recent developments of polymer fiber are described discribed, deuterated and perfl uorined polymer fiber for decreasing loss, and the graded index polymer fiber fo r increasing bandwidth are introduced.

本文综述国内外聚合物光纤的最新进展，介绍降低聚合物光纤损耗的氘化和氟化的方法，提出宽带的梯度折射率聚合物光纤。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。