Dissertation > Excellent graduate degree dissertation topics show

High-power Er3+/Yb3+ Co-doped Fiber Amplifier Study

Author: LiXiangYang
Tutor: PeiLi
School: Beijing Jiaotong University
Course: Communication and Information System
Keywords: fiber amplifier Erbium-Ytterbium co-doped double-clad fiber cladding pump coupling cascade amplifying
CLC: TN722
Type: Master's thesis
Year: 2014
Downloads: 18
Quote: 0
Read: Download Dissertation

Abstract


In recent years, the rapid development of optical fiber communication, fiber amplifier performance put forward higher requirements. With the optical fiber communication technology increasing the amplifier power demand, Erbium/ytterbium co-doped double-clad fiber amplifier with its optical communication wavelength1550nm high saturated output power characteristics, more and more attention by people. This article is based on erbium/ytterbium co-doped fiber characteristics, double-clad fiber structural characteristics, using cladding-pumped coupling technology, from the theoretical and experimental aspects studying high power fiber amplifiers. The main work is as follows:First of all, analysis of the erbium/ytterbium co-doped fiber Yb3+ions doped role, and double-clad fiber structure affect cladding pump absorption efficiency, analysis of the erbium/ytterbium co-doped level system level transition and rate equations and power transmission equations. According to Runge-Kutta law analysis the relationship of the double-clad fiber amplifier output signal power, gain with the fiber length, pump power and the input signal power.Secondly, based on optical design software OptiSystem, simulating and optimizing Erbium/ytterbium co-doped fiber amplifier parameters, studying different pumping light, signal light input corresponding amplifier characteristics. Analyzing the length of active fiber cladding size, rare earth ion doping concentration and other parameters affect the amplifier output performance. By building forward, backward, bi-directional pumping mode simulation model, studied erbium/ytterbium co-doped fiber amplifier gain spectrum and noise characteristics. Comparative analysis the two-level structure and the single-stage structure erbium/ytterbium co-doped fiber amplifier amplification characteristics.Finally, according erbium/ytterbium co-doped fiber amplifier parameters optimization results, build a pumped erbium-ytterbium co-doped double-clad fiber amplifier. In conditions the signal power is OdBm, EDFA saturated output power is23dBm, Er3+/Yb3+co-doped double-clad fiber length is5m, multimode pump laser output power is20.44W, obtained37.12dBm (5.15W) output power,25.19%slope efficiency. Experimental study fiber amplification system ASE spectral characteristics, and at the condition that different pumping power, different power input signal light, amplified output performance changes. And analyze different ways of pumping affect amplifier performance. Analysis experimental observed green phenomenon,1060nm wavelength fluorescence phenomenon self-excited oscillation phenomenon. And Summary the key technical fiber amplifier production

Related Dissertations

  1. Erbium-doped fiber amplifier pump laser drive source research applications,TN248
  2. Thulium-doped Fiber Laser Technology,TN248
  3. Investigation of 2μm Tm3+-Doped Double-Clad Fiber Lasers,TN248
  4. Theoretical and Experimental Study of Pulse Pumped Ytterbium-doped Double-clad Fiber Laser,TN248
  5. Preparation and Research on Spectral Properties of Bi-doped Silica-based Glasses,TQ171.1
  6. EDFA applications in high-speed optical fiber communication systems,TN929.11
  7. Research on Fiber Amplifier Based on DWDM System,TN722
  8. Studies on Optical Properties of Ni2+/Cr3+ Co-doped Transparent Glass Ceramics,TQ171.1
  9. Investigation on Spectroscopic Properties of Rare-earth Doped GeSe2-Ga2Se3-CsI Glasses,TQ171.1
  10. Study on the Optical System of Eyesafe Imaging Infrared/laser Seeker,TJ765.331
  11. Study on Erbium-doped Fiber Amplifiers in Optical Networks,TN722
  12. Research on Gain Flatness Characteristics of Double-Clad Erbium-Ytterbium Co-Doped Fiber Amplifier,TN722
  13. Study on 1550nm Amplifier Based on Double-clad Fiber and High-power Detector,TN722
  14. Research on Multi-Type Gas Concentration Measurement Based on Fiber-Circled Cavity Ring-Down Method,TP274
  15. Applications about One-Dimensional Photonic Crystal on Flattening in Erbium-Doped Fiber Amplifier,TN253
  16. Theoretical and Experimental Study on High Power Photonics Crystal Fiber Amplifiers,TN253
  17. High-power tunable fiber picosecond laser technology research,TN248
  18. Broadband Near-infrared Luminescence and Optical Amplification in Cr4+-doped Transparent Glass Ceramics,TQ171.1
  19. Study on Dual-Loop Gas Concentration Measurement System Based on Cavity Ring-Down Method,TP274
  20. Research of U-wave Band Raman Fiber Laser,TN248
  21. Experimental Research of Alloptical Switch Based on Fiber Resonater Containing EDFA,TN253

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Amplification technology,the amplifier > Amplifier
© 2012 www.DissertationTopic.Net  Mobile