COVERT- Characterization of Optical fibre and VEry long fibre Bragg gratings in Real Time

COVERT-光纤和超长光纤布拉格光栅的实时表征

• 批准号: RTI-2018-00692
• 负责人: Kashyap, Raman
• 金额: $ 9.18万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=642245
• 关键词: COVERT; Characterization; Optical; fibre; VEry

This proposal, COVERT- Characterization of Optical fibre and VEry long fibre Bragg gratings in Real Time, is for the acquisition of an optical frequency domain reflectometer, which allows the characterization of long optical waveguides and fibre Bragg gratings using back-scatter signals. Using interferometry with a frequency swept source, the Rayleigh scatter from optical waveguides, or the reflected signal from a Bragg grating allows the characterization of the distributed refractive index in the optical waveguide and the characterization of the grating in both amplitude and phase. Since Fourier transforms are required to arrive at spatial information, the processing of the signals take a fair amount of time including the sweep time for the source. Our current instrument, which is nearly 7 years old is very slow, taking seconds to minutes to process a measurement. This has caused a bottleneck in our research efforts.

该提案，COVERT-真实的时间光纤和VEry长光纤布拉格光栅的表征，用于获得光频域反射计，其允许使用反向散射信号表征长光波导和光纤布拉格光栅。使用具有扫频源的干涉测量法，来自光波导的瑞利散射或来自布拉格光栅的反射信号允许表征光波导中的分布折射率以及表征光栅的振幅和相位。由于需要傅立叶变换来获得空间信息，因此信号的处理需要相当长的时间，包括源的扫描时间。我们目前的仪器已经使用了将近7年，速度非常慢，需要几秒钟到几分钟来处理一个测量结果。这给我们的研究工作造成了瓶颈。