GOALI: Core-to-Cladding-to-Core Mode Coupling and Recoupling in Photonic Crystal Fiber with Long Period Gratings for Resonance Laser Absorption Spectroscopy

GOALI：用于共振激光吸收光谱的具有长周期光栅的光子晶体光纤中的纤芯到包层到纤芯的模式耦合和再耦合

• 批准号: 0922175
• 负责人: Henry Du
• 金额: $ 36.06万
• 依托单位: Stevens Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0922175&HistoricalAwards=false
• 关键词: GOALI; Core; Cladding; Mode; Coupling

Intellectual Merit: Photonic crystal fiber represents a new frontier in fiber-optic research. This project aims to investigate a novel platform concept based on core-to-cladding-to-core mode coupling and recoupling enabled by long-period fiber gratings inscribed in this type of fiber for resonance laser absorption spectroscopy. Specific project activities will include simulation of mode properties of select platform designs such as field distribution, overlap, and propagation loss using commercial codes; simulation-guided laser inscription and optical measurements of the platform structures for the realization of mode coupling and recoupling at prescribed resonance wavelengths; and measurements and assessment of the sensing capabilities of the optimal platform structures via resonance laser absorption spectroscopy of environmentally significant gases. This project will lead to a wealth of information on optimization of the platform structures for strong cladding mode coupling and recoupling and for resonance wavelength control so as to facilitate robust resonance laser absorption spectroscopy.Broader Impacts: This project will provide a knowledge foundation for practical exploitation of novel fiber-optic sensing schemes. Successful outcome of the project has the potential to usher in a new sensing paradigm that fundamentally transforms the conventional fiber-optic evanescent field sensing approach. In addition, this project will provide an excellent opportunity for the training of a doctoral student as well as for valuable research experiences of a high school science teacher and several high school students in a frontier research area. The university-industry partnership under the GOALI mechanism will significantly enhance the translational prospect of university research, ultimately leading to commercial applications.

知识优势：光子晶体光纤代表了光纤研究的一个新前沿。该项目旨在研究一种基于芯-包层-芯模式耦合和重耦合的新型平台概念，该平台由嵌入这种类型光纤的长周期光纤光栅实现，用于共振激光吸收光谱。具体的项目活动将包括使用商业代码模拟选定平台设计的模式属性，如场分布、重叠和传播损失；在规定的共振波长下实现模式耦合和重耦合的平台结构的仿真引导激光刻字和光学测量；并通过共振激光吸收光谱法对环境重要气体进行了最优平台结构传感能力的测量和评估。该项目将为平台结构的优化提供丰富的信息，用于强包层模式耦合和重耦合以及共振波长控制，从而促进鲁棒共振激光吸收光谱。更广泛的影响：该项目将为新型光纤传感方案的实际开发提供知识基础。该项目的成功成果有可能引领一种新的传感范式，从根本上改变传统的光纤倏逝场传感方法。此外，该项目将为培养一名博士生提供极好的机会，并为一名高中科学教师和几名高中生在一个前沿研究领域提供宝贵的研究经验。GOALI机制下的大学-产业伙伴关系将显著提升大学研究的转化前景，最终实现商业应用。