Dissertation > Excellent graduate degree dissertation topics show

Fabrication and Test of Sub-micron Grating Based on Lloyd Mirror Interference System

Author: ZhengHui
Tutor: ZhangDeLong
School: Tianjin University
Course: Optical Engineering
Keywords: Lloyd mirror sub-micron grating interferometer stripes holographic grating Optical waveguide
CLC: TN252
Type: Master's thesis
Year: 2012
Downloads: 40
Quote: 1
Read: Download Dissertation

Abstract


Optical waveguides play an important role in communications, military, electricity, astronomy and so on .The realization of these functions and sensing applications rely on a number of excellent properties of the materials used in waveguide. The fine grating which has periodic structure in the internal waveguide has a light side waveguide switching, wavelength dispersion adjustment and other functions. But unfortunately, the production of small size grating, especially sub-micron gratings, is so difficult because high precision technology. In this paper, a new method that fabrication and testing of sub-micron grating based on Lloyd mirror interference system is proposed. The precision of groove density adjustment by this interference system is very high, and the structure of the new device is more simple, more convenient and more stable than the other device.Based on theoretic analysis and the corresponding experiment research, r the feasibility of the method is discussed in the paper. The main work is as the followings:1)The paper give a theoretical analysis of the light reflection problem on dielectric interface and metal surface .At last, the Al film reflector SIGMA-TFAN-5060R10-1 is elected in the interference system which solves the problem of the limitation of grating period because of the incidence angle in the Lloyd mirror interferometer.2)Specific Lloyd mirror holographic interferometer is built with He-Ne laser and semiconductor green laser respectively and .A lot of work is done to get the high quality and clear stripes the practical problems of spot quality, collimation and beam expander are solved.The CCD acquisition system is set to get interference fringes of wavelength of 632.8nm and 532nm and angles from to 5°to 25°. And the minimum period of the fringes is 630nm.Measure the stripes collected in the experiment through the use of area measurement method.3) The error of optical path can be controlled at 4‰which meet the production requrement. And the error of measurement system designed in the paper is less than 3.4% to meet the basic stripe monitoring requrements.

Related Dissertations

  1. Size-dependent Photochromic and Holographic Storage Properties of Ag/TiO2 Nanocomposite Film,TB383.2
  2. Fabricating and Characterization of Two-layers Buried Optical Waveguide in Glass Substrate,TN252
  3. Research of Electro-Optical Printed Circuit Board Based on Optical Waveguide Interconnection,TN41
  4. Waveguide-type Optical Filters and Photodetectors on Silicon Substrate for Visible Light,TN256
  5. Study on the End-coupling of Optical Fiber and Waveguide Device,TN253
  6. Highly Sensitive Porous-silicon-formed Bio-chemical Waveguide Sensors Based on Novel Coupling Approaches,TP212.3
  7. Study of Optical Implementation and Integrated Technology of Free-Space Optical Interconnection Network,O438
  8. Research on the Optical Waveguide for Guided-wave Acousto-optic Modulator,TN252
  9. Study on Fabrication of Polymer Optical Waveguide Based on Moulding Technology,TN252
  10. Investigation on Optical Characteristics of the Microstructure System Based on Optical Resonance,TN929.1
  11. Analysis and Optimization on An Optical Switch Based on Micro-fluidic Control Technology,TN252
  12. Research on Propagation Properties of an Optical Surface Plasmonic Waveguide with a Bowtie Air Core,TN252
  13. Waveguide array fiber alignment technology based on machine vision,TP391.41
  14. Optical Waveguiding Properties of Micro/Nano-fibers,TN252
  15. Study on the Voltage Characteristics of Optical Waveguide Array Electro-optic Scanner,TN252
  16. Research and Design of integrated optical waveguide electro-optical analog - to - digital converter,TN252
  17. Silicon integrated electro-optic modulator,TN761
  18. Basic Studies of Magneto-Optical Waveguide Devices,TN252
  19. Microstructure optical properties of the optical waveguide,TN252
  20. Preparation of In2O3 Composite Film and Its Gas Sensitive Property,O614.372
  21. Modification of PMMA Poled-Polymer Film and Its Application for Optical Waveguide,TB383.2

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Photonics technology,laser technology > Optical waveguide and integrated optics > Waveguide
© 2012 www.DissertationTopic.Net  Mobile