Structured fibers for low noise random lasers and multi-parameter sensing

用于低噪声随机激光器和多参数传感的结构化光纤

• 批准号: RGPIN-2020-06302
• 负责人: Bao, Xiaoyi
• 金额: $ 5.46万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=762615
• 关键词: Structured; fibers; low; noise; random

This proposal focuses on design and fabrication of fiber structures to minimalize random laser noise in ultra-narrow linewidth (<100Hz) applications to enable us to detect and locate hydrophone sources at sea, as well as to hear abnormal sounds created by defects and cracks in bridges, railways, airplanes, pipelines, power generators (nondestructive testing -NDT). An instrument for real time coherence, frequency drift and monitoring at narrow linewidth (<100Hz) laser will be developed based on coherent optical time domain reflectometry (C-OTDR).The long structured fiber enables distributed multi-parameter sensing in addition to distributed acoustic sensing (DAS). The low noise random fiber laser will create a new class of narrow linewidth laser at low cost for potential novel field applications, which will enables the lowest frequency detection and overcomes current laser limitations, thus allowing detection of pipeline leaks and use in hydrophone applications. Small frequency jitter minimizes phase uncertainty for small deformations and crack monitoring in NDT. The development of quantum noise-limited random fiber lasers and real time laser dynamic characterization based on coherent OTDR lead to groundbreaking advances in random fiber lasers and laser characterization tools. The distributed vector acoustic sensor is highly original and likely to create pioneering contributions to the field of fiber sensors. The proposed distributed fiber optical acoustic sensors will revolutionize NDT technology for monitoring railways, highway bridges, oil/gas transportation, as well as seismic monitoring for natural disaster prevention, which are extremely relevant to Canada. It will also provide new physics for low noise lasers, high precision sensors and optical signal processing units to make discoveries that could not be made up to now. The design and development of structured specialty fibers provide opportunities for low noise laser control and multi-functional parameter sensing. This is extremely original in the distributed vector acoustic wave detection and fiber sensor fields. The enhanced multi-parameter sensing sensitivity enables applications for the biomedical fields. The compact optical test instruments will offer a diagnostic tool with high accuracy and potentially low cost, which will benefit Canadian society. The proposal involves photonics, materials, instrumentation, nano-device design and fabrication, electronics, computer program. It is very comprehensive program that will require and combine students of various backgrounds to solve interdisciplinary problems. It will also create a very fertile training ground to attract HQPs of diverse backgrounds from around the world. I anticipate that training in the proposed program will allow these students to acquire and enhance their technical and management skills, making them highly sought after by IT industry, government and academia.

该提案的重点是光纤结构的设计和制造，以最大限度地减少超窄线宽（<100Hz）应用中的随机激光噪声，使我们能够检测和定位海上的水听器源，以及听到由缺陷和裂纹产生的异常声音。桥梁、铁路、飞机、管道、发电机（无损检测 -NDT）。将基于相干光时域反射计（C-OTDR）开发一种用于窄线宽（<100Hz）激光实时相干、频率漂移和监测的仪器。长结构光纤除了分布式声学之外还能够实现分布式多参数传感传感（DAS）。 低噪声随机光纤激光器将以低成本创建新型窄线宽激光器，用于潜在的新颖现场应用，这将实现最低频率检测并克服当前激光器的限制，从而允许检测管道泄漏并在水听器应用中使用。小频率抖动可最大限度地减少无损检测中小变形和裂纹监测的相位不确定性。量子噪声限制随机光纤激光器和基于相干 OTDR 的实时激光动态表征的发展导致了随机光纤激光器和激光表征工具的突破性进展。分布式矢量声学传感器具有高度原创性，可能为光纤传感器领域做出开创性贡献。拟议的分布式光纤声学传感器将彻底改变用于监测铁路、公路桥梁、石油/天然气运输以及自然灾害预防地震监测的无损检测技术，这些技术与加拿大息息相关。它还将为低噪声激光器、高精度传感器和光信号处理单元提供新的物理原理，以实现迄今为止无法实现的发现。结构化特种光纤的设计和开发为低噪声激光控制和多功能参数传感提供了机会。这在分布式矢量声波检测和光纤传感器领域是极其原创的。增强的多参数传感灵敏度使其能够应用于生物医学领域。紧凑型光学测试仪器将提供高精度和潜在低成本的诊断工具，这将使加拿大社会受益。 该提案涉及光子学、材料、仪器仪表、纳米器件设计和制造、电子学、计算机程序。这是一个非常全面的项目，需要并结合不同背景的学生来解决跨学科问题。它还将创造一个非常肥沃的训练场，以吸引来自世界各地不同背景的总部。我预计该项目的培训将使这些学生获得并提高他们的技术和管理技能，使他们受到IT行业、政府和学术界的高度追捧。