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: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=718292
• 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.

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).将根据相干的光学时域反射仪（C-OTDR）开发实时连贯，频率漂移和监测激光器的频率漂移和监测的仪器。长结构的纤维启用分布式多参数传感的长结构化纤维，除了分布式声音传感（DAS）。 低噪声随机光纤激光器将以低成本的潜在新型现场应用创建一类新的狭窄线宽激光器，这将使频率检测最低并克服当前的激光限制，从而允许检测管道泄漏并在Hydrophone应用中使用。小频率抖动可以最大程度地减少NDT中小变形和裂纹监测的相位不确定性。基于连贯的OTDR的量子噪声限制的随机光纤激光器和实时激光动态表征的开发导致随机光纤激光器和激光表征工具的突破性进步。分布式矢量声传感器是高度原始的，并且可能对纤维传感器领域产生开拓性贡献。 拟议的分布式光纤传感器将彻底改变NDT技术，用于监测铁路，高速公路桥梁，石油/天然气运输以及与加拿大极为相关的自然灾害预防的地震监测。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，以进行目前无法弥补的发现。结构化特种纤维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。这是分布式矢量声波检测和纤维传感器场中极为原始的。增强的多参数感应敏感性可实现生物医学领域的应用。紧凑的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，纳米设备设计和制造，电子设备，计算机程序。这是非常全面的计划，需要并结合各种背景的学生来解决跨学科问题。它还将创建一个非常肥沃的训练场，以吸引来自世界各地的各种背景的HQP。我预计拟议计划中的培训将使这些学生能够获得和增强其技术和管理技能，从而使IT行业，政府和学术界的追捧。