研究目的
Investigating the purification techniques of tellurite glasses to enhance their mid-infrared transmission performances for optical fiber applications.
研究成果
The review concludes that the best mid-IR transmission in tellurite fibers is achieved by synthesizing glasses under rich O2 atmosphere with platinum crucibles and using desiccant reagents like ZnF2. These optimized fibers enable supercontinuum generation up to 5 μm, opening new possibilities for mid-IR applications.
研究不足
The review highlights the technical challenges in achieving ultra-low OH content in tellurite glasses, including the difficulty in processing high-purity precursors and the potential for contamination during fiber drawing. The effectiveness of purification techniques is limited by the thermodynamic and kinetic constraints of the reactions involved.
1：Experimental Design and Method Selection:
The review focuses on the synthesis and purification of tellurite glasses under various atmospheres and crucible materials to minimize OH content and improve mid-IR transmission.
2：Sample Selection and Data Sources:
Studies from the last 20 years on tellurite glass purification were analyzed, focusing on methods to reduce OH impurities.
3：List of Experimental Equipment and Materials:
Platinum and gold crucibles, controlled atmosphere synthesis setups, and desiccant reagents like ZnF2 were used.
4：Experimental Procedures and Operational Workflow:
Synthesis under rich O2 atmosphere, use of desiccant reagents, and reactive atmosphere processing (RAP) techniques were detailed.
5：Data Analysis Methods:
Gibbs energy calculations were used to predict suitable synthesis conditions, and absorption coefficients were measured to assess OH content.
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