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Erbium/ytterbium co-doped double clad fiber amplifier, its applications and effects in fiber optic communication systems.

机译：// co共掺杂双包层光纤放大器及其在光纤通信系统中的应用和效果。

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摘要

Increased demand for larger bandwidth and longer inter-amplifiers distances translates to higher power budgets for fiber optic communication systems in order to overcome large splitting losses and achieve acceptable signal-to-noise ratios. Due to their unique design ytterbium sensitized erbium doped, double clad fiber amplifiers; offer significant increase in the output powers that can be obtained. In this thesis we investigate, a one-stage, high power erbium and ytterbium co-doped double clad fiber amplifier (DCFA) with output power of 1.4W, designed and built in our lab.; Experimental demonstration and numerical simulation techniques have been used to systematically study the applications of such an amplifier and the effects of incorporating it in various fiber optic communication systems. Amplitude modulated subcarrier multiplexed (AM-SCM) CATV distribution experiment has been performed to verify the feasibility of using this amplifier in an analog/digital communication system. The applications of the amplifier as a Fabry-Perot and ring fiber laser with an all-fiber cavity, a broadband supercontinuum source and for generation of high power, short pulses at 5GHz have been experimentally demonstrated.; A variety of observable nonlinear effects occur due to the high intensity of the optical powers confined in micron-sized cores of the fibers, this thesis explores in detail some of these effects caused by using the high power Er/Yb double clad fiber amplifier. A fiber optic based analog/digital CATV system experiences composite second order (CSO) distortion due to the interaction between the gain tilt---the variation of gain with wavelength, of the doped fiber amplifier and the wavelength chirp of the directly modulated semiconductor laser. Gain tilt of the Er/Yb co-doped fiber amplifier has been experimentally measured and its contribution to the CSO of the system calculated. Theoretical analysis of a wavelength division multiplexed system with closely spaced channels has been carried out to show that crosstalk can occur due to the four-wave mixing products generated inside the high power Er/Yb DCFA. A model for parametric amplification due to four-wave mixing has been developed and used to analyze its application for short pulse generation and high speed optical time division multiplexing.
机译：对更大带宽和更长的放大器间距离的需求的增加转化为光纤通信系统更高的功率预算，以便克服大的分裂损耗并获得可接受的信噪比。由于其独特的设计，掺敏化的掺double双包层光纤放大器；显着提高了可获得的输出功率。在本文中，我们研究和设计了一个单级，输出功率为1.4W的高功率掺power掺cl双包层光纤放大器（DCFA）。实验演示和数值模拟技术已被用于系统地研究这种放大器的应用以及将其并入各种光纤通信系统中的效果。已经进行了调幅子载波多路复用（AM-SCM）CATV分配实验，以验证在模拟/数字通信系统中使用该放大器的可行性。实验证明了该放大器作为具有全光纤腔的Fabry-Perot和环形光纤激光器，宽带超连续谱源以及产生高功率，5 GHz短脉冲的应用。由于光纤的微米级纤芯中限制了较高的光功率强度，因此会发生各种可观察到的非线性效应，因此，本文详细探讨了使用高功率Er / Yb双包层光纤放大器引起的其中一些效应。基于光纤的模拟/数字CATV系统由于增益倾斜-掺杂光纤放大器的增益随波长的变化与直接调制的半导体激光器的波长chi之间的相互作用而经历复合二阶（CSO）失真。已对Er / Yb共掺杂光纤放大器的增益倾斜进行了实验测量，并计算了其对系统CSO的贡献。已经对具有紧密间隔的通道的波分复用系统进行了理论分析，以显示由于高功率Er / Yb DCFA内部产生的四波混合产物而可能发生串扰。已经开发了一种由于四波混频而产生的参数放大模型，并用于分析其在短脉冲生成和高速光时分复用中的应用。

著录项

  • 作者

    Dua, Puneit.;

  • 作者单位

    University of Connecticut.;

  • 授予单位 University of Connecticut.;
  • 学科 Engineering Electronics and Electrical.; Physics Optics.
  • 学位 Ph.D.
  • 年度 2005
  • 页码 106 p.
  • 总页数 106
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;光学;
  • 关键词

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