Dissertation > Excellent graduate degree dissertation topics show

Study on Michelson Interferometer Phase Compensation of All-Fiber Michelson Interferometer and Its Application in Laser Ultrasound Detecting

Author: YangLei
Tutor: ShengXinZhi；WuZhongQing
School: Beijing Jiaotong University
Course: Optics
Keywords: fiber-optic Michelson interferometer Environmental influence phase compensation Circuit
CLC: TH744.3
Type: Master's thesis
Year: 2009
Downloads: 220
Quote: 1
Read: Download Dissertation

Abstract


Laser ultrasonic is non-contact, can generate ultrasound with narrow pulse, which have very high resolution in time and space. It can be excited in different shape issues. It also can work in high-temperature, high pressure, toxic, radioactive and other harsh environment. Laser ultrasonic is a emerging cross-disciplinary which is good at the research of ultrasonic transmit and material property’s ultrasonic nondestructive evaluation.Compared with other ultrasonic detecting methods, Optical fiber interferometer is advantage in small size, light weight, compact structure and sensitive, and Michelson interferometer is one of the best Optical fiber interferometers. Because of the two optical beams through two different optical paths in interferometer, Michelson interferometer is often influenced by environment facts and few of Michelson interferometer is used. So solving the unstable problem is a key for Michelson interferometer application.Firstly, a basic theoretical analysis is carried on the Michelson interferometer and the environmental factor influence is analyzed on the fiber-optic interferometer in this paper. Then, according to fiber-optic Michelson interferometer related principles, the structure of fiber-optic interferometer and the key components of interference system are studied. In this paper, key device and debug the process has done a detailed introduction. The study on phase compensation of Michelson interferometer is proposed. And a phase compensation circuit is produced, which is finally used in ultrasonic detecting. The phase compensation circuit successfully makes the interferometer stable and is successful in eliminating the effects of Environment .The experimental results shows that the Michelson interferometer system can detect ultrasonic signals accurately. At the same time, in order to limit the load on the piezoelectric ceramic voltage, an automatic discharge circuit is designed and used.

Related Dissertations

  1. Michelson interferometer optical bistable,TN25
  2. Fiber optic magnetic field sensor change can and systems research,TN712
  3. Polarization independent fiber optic Michelson interferometer weak magnetic field sensor,TP212.1
  4. Study on the Electro-optic Coefficient Measurement of Polymer Materials and Its Application,TN204
  5. Study on Laser Ultrasound Detecting with Fiber Interferometer,TN247
  6. The Influence Evaluation of Gas-field Exploitation on Groundwater Environment in South Sulige,P641.8
  7. Fundamental and Applied Research on the Problems of Zinc-air Battery Systems,TM911
  8. Study on Environmental Impact Assessment of Land Use General Planning,F301
  9. The Study of the Vibration Property and Environmental Influence of Steel-spring Floating Slab Track in Tunnels,U213.2
  10. On Law Institution of Environmental Protection of Engineering Construction,D922.68
  11. Environmental History Perspective the Western Regions Tribute lion,K207
  12. Study on Environmental Impact Issues of Industry Produce Based Entropy,F224
  13. The Influence Analysis of Vibration and Transfer Property Due to the Selection of Track Structure on Urban Viaduct,U211.3
  14. The Application of Ecological Footprint and Material Flow Analysis to Automobile Industry,X322
  15. Economic Analysis on Environmental Influence of Land Use Planning,F301
  16. Study on Environmental Impact Assessment of Land Use General Planning,X820.3
  17. Study on Environmental Effect of Livestock Husbandry,F329
  18. Research on Strategic Environmental Assessment of Land Use Planning for Province District,X820.3
  19. Research and Evaluation on Reclaimed Water Source Heat Pump Used in Heat Supply System,TU833.1
  20. Preliminary study and evaluation of the impact on the surrounding environment of the Longmen nuclear power plants in Zhuzhou, Hunan,TM623.8
  21. The Research on Environmental Protection of ShenHua & Tianjin Coal Terminal Ⅱ,X322

CLC: > Industrial Technology > Machinery and Instrument Industry > Instruments, meters > Optical instruments > Physical optical instruments > Interferometer
© 2012 www.DissertationTopic.Net  Mobile