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Gas-phase proton exchange technology

Author: YiPeng
Tutor: DaiJiZhi
School: University of Electronic Science and Technology
Course: Optical Engineering
Keywords: Lithium niobate Optical waveguide Proton exchange Gas-phase proton exchange
CLC: TN929.1
Type: Master's thesis
Year: 2005
Downloads: 47
Quote: 1
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Abstract


With the application of the next generation of optical communication network , the optical component research more and more attention has been paid . Many of the optical communication devices have the structure of the waveguide , the waveguide device in order to produce a good performance , we need to conduct research on the waveguide production technology . This paper studies the gas - phase proton exchange produced lithium niobate optical waveguide technology . The paper first reviews the research progress of the lithium niobate modulator , described the need to study the gas - phase proton exchange , the development of proton exchange process research , pointed out that the gas-phase proton exchange method waveguide characteristics , and the use of this the methods produce the advantages of the waveguide . Papers on a variety of materials , production and use of waveguide method described on the basis of the understanding of the basic physical properties of lithium niobate crystal on a theoretical model of the exchange mechanism of the gas-phase proton exchange waveguide layer refractive index distribution , also introduced a kinds of analysis of the distribution of the refractive index of the waveguide layer method -WKB method . The experimental apparatus and process of the gas-phase proton exchange method of design , fabricate waveguides through a series of experiments using the anti- WKB method for gas-phase proton exchange waveguide mode refractive index distribution , and production and the liquid-phase proton exchange waveguide compared obtained fumed waveguide refractive index distribution is Gaussian while liquid waveguide refractive index distribution of step - type conclusion . The OF also studied the precise control of the stability and ease of fumed waveguide produce the advantages of the single - mode waveguide . OF gas proton exchange waveguide layer , study its infrared absorption spectral characteristics , and by means of detection of the X-ray diffraction to study its crystal structure changes in the waveguide layer , and finally the gas phase proton exchange law waveguide loss characteristics preliminary study .

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