GOALI: Optical Nonlinearities in Glass Fibers and their Effects on the Guided Propagation of Light

GOALI：玻璃纤维中的光学非线性及其对光引导传播的影响

• 批准号: 9974031
• 负责人: Jean Toulouse
• 金额: $ 89.88万
• 依托单位: Lehigh University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-09-15 至 2004-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9974031&HistoricalAwards=false
• 关键词: GOALI; Optical; Nonlinearities; Glass; Fibers

Toulouse This GOALI (Grant Opportunities for Academic Liaison with Industry) project represents an original four-way collaboration between a focussed research group from physics, optical engineering and materials science at Lehigh in a partnership with Lucent Technologies to study optical nonlinearities in glass fibers. Optical nonlinearities have a significant effect on the propagation of light in glass fibers. Because fibers are usually very long, nonlinearities become cumulatively important and because the fibers usually possess a narrow core (a few microns in diameter), optical intensities in fibers are quite high. These factors are even more true now with the development of wavelength division multiplexing in which many different wavelengths propagate simultaneously in fibers, increasing the intensities even further. However, these nonlinearities are significant in optical fibers, not only because of their length and their core size, but also because of the microscopic structure and properties of glasses. One part of the project will concentrate on the microstructure and properties of bulk glasses and the second part on the nonlinear optical properties of bulk glasses and fibers. One of the PIs from Lucent will contribute to both experimental parts, in the synthesis of the bulk glasses, in the drawing of fibers and in the characterization of their physical properties. The experimental results will then serve as input for the theoretical calculations and simulations that will combine them with various fiber parameters in order to predict the effect of these nonlinear optical properties on the propagation of light signal in real optical systems. These calculations and simulations will also help guide the experimental investigation. The results of the theoretical calculations and predictions will finally be tested in collaboration with the other PI from Lucent on real optical systems. The final or feedback step of the loop will consist in a critical examination of the test results and, in consultation with all the project participants, suggestions for modification of the glasses (materials parameters) or of the fiber parameters. The students involved in the project will spend about half their time at Lucent and thus will be exposed to the industrial research setting.%%%The ultimate goal of this project is the control of nonlinear effects in optical systems by proper design or appropriate modifications of the structure and/or composition of glasses used to draw fibers. These optical fibers are of increasing importance in today's information-intensive world (almost all of the traffic on the internet and world-wide-web are carried by glass fibers.) This GOALI project is co-funded by the Ceramics and the Condensed Matter Physics Programs in the Division of Materials Research and the Office of Multidisciplinary Activities of the Mathematical and Physical Sciences Directorate.***

图卢兹这个GOALI(学术与工业联系拨款机会)项目代表了LeHigh的一个专注于物理、光学工程和材料科学的研究小组与朗讯技术合作研究玻璃纤维中的光学非线性的原创四方合作。光学非线性对光在玻璃纤维中的传播有很大影响。由于光纤通常很长，非线性就变得越来越重要，而且由于光纤的纤芯通常很窄(直径只有几微米)，光纤中的光强度非常高。随着波分复用的发展，这些因素现在变得更加正确。在波分复用中，许多不同的波长在光纤中同时传输，进一步增加了强度。然而，这些非线性在光纤中是重要的，不仅因为它们的长度和芯的大小，而且还因为玻璃的微观结构和性质。该项目的一部分将集中在大块玻璃的微观结构和性能上，第二部分将集中在大块玻璃和纤维的非线性光学性质上。朗讯的其中一位PI将对两个实验部分--块状玻璃的合成、光纤的拉伸和物理性能的表征--做出贡献。然后，实验结果将作为理论计算和模拟的输入，将它们与各种光纤参数相结合，以便预测这些非线性光学特性对光信号在实际光学系统中传播的影响。这些计算和模拟也将有助于指导实验研究。理论计算和预测的结果将最终在实际光学系统上与朗讯的另一个PI合作进行验证。循环的最后或反馈步骤将包括对测试结果的关键检查，并在与所有项目参与者协商后，提出修改玻璃(材料参数)或纤维参数的建议。参与该项目的学生将在朗讯度过大约一半的时间，因此将接触到工业研究环境。%本项目的最终目标是通过适当设计或适当修改用于拉制光纤的玻璃的结构和/或组成来控制光学系统中的非线性效应。这些光纤在当今信息密集的世界中变得越来越重要(互联网和万维网上的几乎所有流量都是由玻璃纤维传输的。)这个GOALI项目是由材料研究部的陶瓷和凝聚态物理项目以及数学和物理科学局的多学科活动办公室共同资助的。