Dissertation > Excellent graduate degree dissertation topics show

Damage-Induced Refractive Index Changes and Associated Waveguide Mode Study in Ion Implanted Optoelectronic Crystals

Author: JiangYi
Tutor: WangKeMing
School: Shandong University
Course: Condensed Matter Physics
Keywords: Ion implantation Optical waveguides Lattice damage Refractive index change
CLC: TN252
Type: PhD thesis
Year: 2006
Downloads: 140
Quote: 6
Read: Download Dissertation

Abstract


A waveguide is characterized by a region of high refractive index bounded by regions of lower index. It can confine the optical energy in small space and improve the optical energy density. Waveguide is the basic component of integrated optics, and it also plays an important roll in the manufacture of optical devices. Because of its importance in practical application, scientists and engineers are trying to find various ways to fabricate "high-quality" optical waveguide. Several waveguide fabrication techniques have been developed to obtain the waveguide structures, such as metal diffusion, ion exchange, thin film deposition and ion implantation.Recently ion implantation, as an outstanding method to modify the surface property of materials, confirms it to be a universal method for fabricating waveguide structures in most optical materials because it has a superior controllability and reproducibility. In the waveguides formed by light-ion implantation, such as He or H, ion dose of order of 1016 ions/cm2 or higher are needed, an optical barrier has been built up at the end of the track due to the damage induced by nuclear energy loss. Such an optical barrier confines the light in an "optical well" between itself and the surface. And in some waveguides formed by He+ implantation, positive refractive index changes are observed in the waveguide region. More recently, many results show that heavier ion implanted waveguides may be fabricated efficiently in optical; materials because much lower doses (1013-1015 ions/cm2) are needed. In the

Related Dissertations

  1. Improvement of Cellulase Productivity of Penicillium Decumbens by Ion Beam Implantation and Genome Shuffling and Application of the Cellulase,Q933
  2. Investigation on Optimization of the Quantum Cryptography Communication System and Quantum Logic Gates,O431.2
  3. Study on Technique with Improving Feed Quality of Soybean Meal by Biological Modified,S816
  4. Microstructure and Properties of GCr15 Bearing Steel Ions Implantation Carbon, Nitrogen and Tantalum by PBII,TG142.1
  5. Mechanical Properties and Oxidation-Resistance of the TC4 Alloy Treated by Plasma Immersion Ion Implantation,TG174.44
  6. Investigation of Electro-Optic Properties and Lattice Damage Distribution of Ion Implanted Waveguides in Lithium Niobate,TN252
  7. Annealing Study of Ions Implanted Lithium Niobate Waveguide,TN252
  8. Fabrication and Research of Ion Implantation MgO: LiNbO3 Planar and Channel Waveguide,TN252
  9. Ion implanted lithium niobate waveguide harmonic conversion efficiency of Cerenkov,TN252
  10. Investigation of Optical Waveguides Fabricated by Ion Implantation and Thermal Diffusion,TN252
  11. Research of Endothelization on Titanium Oxide Film Surface Modification via Immobilization of Laminin and Fibronectin,R318.08
  12. The Surface Modification of CoCrMo Alloy by Plasma Immersion Ion Implantation Deposition,TB43
  13. Ion Implantation on 4H-SiC MOS interface characteristics of study,TN304.24
  14. Variety Breeding of Celosia Cristata,S681.3
  15. Iron -frequency low pressure plasma immersion ion implantation and nitriding research,TG174.44
  16. Studies on the Formation of SiC Thin Films by Ion Implantation and the Photoluminescence Behaviors of Er3+,TB383.2
  17. Yeast fermentation of sweet sorghum stalks after ion implantation Stability,TS262.2
  18. Titanium Oxide Surface Modified by Plasma Immersion Ion Implantation Using Ammonia and Laminin Immobilization,R318.08
  19. Structural and Optical Impact of Transition Metal Implantation into Rutile Single-crystals,O614.411
  20. Numerical Study of Sheath Characteristics with Inner Surface of a Hollow Cylindrical Dielectric Tube in Plasma Immersion Ion Implantation,O539
  21. Wear Properties of Plasma-based Low Energy Nitrogen Ion Implanted AISI316 Austenitic Stainless Steel,TH117

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