Processing of Layered Semiconductor-Core Optical Fibers for Mid-IR Applications

用于中红外应用的分层半导体芯光纤的加工

• 批准号: 1301108
• 负责人: Soumendra Basu
• 金额: $ 44.35万
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-05-01 至 2018-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1301108&HistoricalAwards=false
• 关键词: Processing; Layered; Semiconductor; Core; Optical

This grant provides funding for a fundamental study of the processing of semiconductor-core waveguides from materials that are able to be formed into fiber form, in concert with most regular glasses, and that facilitate refractive index engineering to create complex waveguide cores for optical fibers for use in the delivery and manipulation of mid-infrared laser beams. Borosilicate glass fibers with layered silicon and germanium alloy cores will be designed and fabricated, where the light is to be completely confined in the core so as to minimize loss during use. The system is chosen to allow semi-solid deformation of the semiconductor core, where the liquid composition of the different layers will be identical. The sharpness of the interface is determined by the diffusion of solid grains in a liquid and will be critical for performance. The diffusion of the interface will be studied, both microstructurally, and by changes in optical properties. This research will contribute to the fundamental understanding of the complex multicomponent modified chemical vapor deposition process, an understanding of the semi-solid deformation of semiconductor alloys, optical waveguide design, and the ability for waveguide processing control in layered semiconductor-core fibers. The successful completion of this research will have significant impact, ranging from biomedical surgery, information decoding, hazardous chemical sensing, to technologies that enhance defense capabilities. Low loss mid-infrared waveguides will enable delivery and manipulation of mid-infrared laser beams and this capability will open up new markets for mid-infrared lasers, an area that is ripe for growth. Two graduate students and several undergraduate students will be directly involved in the research effort. A module demonstrating optical fiber technology will be developed for use as an outreach tool.

该补助金为一项基础研究提供资金，用于从能够形成纤维形式的材料中加工半导体芯波导，与大多数常规玻璃相一致，并促进折射率工程，以创建用于传输和操纵中红外激光束的光纤的复杂波导芯。将设计和制造具有层状硅和锗合金芯的硼硅酸盐玻璃纤维，其中光将被完全限制在芯中，以最大限度地减少使用过程中的损耗。选择该系统以允许半导体芯的半固态变形，其中不同层的液体成分将是相同的。界面的锐度由固体颗粒在液体中的扩散决定，并且对于性能至关重要。将研究界面的扩散，微观结构，并通过光学性质的变化。这项研究将有助于对复杂的多组分改性化学气相沉积工艺的基本理解，对半导体合金的半固态变形的理解，光波导设计，以及在分层的半导体芯光纤中波导加工控制的能力。这项研究的成功完成将产生重大影响，从生物医学手术，信息解码，危险化学品传感到增强防御能力的技术。低损耗中红外波导将使中红外激光束的传输和操纵成为可能，这种能力将为中红外激光器开辟新的市场，这是一个成熟的增长领域。两名研究生和几名本科生将直接参与研究工作。将开发一个演示光纤技术的模块，用作外展工具。