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昊衡科技推出OFDR光纤传感教学解决方案 助力打造更高性价比的教学方案（图）
昊衡科技 OFDR 光纤传感
2024/10/14
OFDR技术具有精度高、抗电磁干扰等特性，在测量领域有独特的优势。但由于其技术壁垒较高，导致OFDR应用成本也很高。为助力高校实现大规模OFDR场景教学，昊衡科技推出具有高性价比的OFDR分布式光纤传感教学解决方案，为学生们提供高性能分布式光纤传感学习平台。该解决方案由昊衡科技团队自主研发，专为分布式光纤传感教学打造。该解决方案只需一台OSI主机，结合光开关、远程控制和网络共享即可实现多人教学实训...
Unaltered Optical Fiber as an Absolute Wavelength Reference for OFDR Systems
Interferometry Phase measurement
2015/5/25
We present a novel method of obtaining an absolute wavelength reference for OFDR measurements using Rayleigh backscatter from standard optical fiber. We report 1 GHz (8pm)accuracy.
2-cm spatial resolution over 40 km realized by bandwidth- division phase-noise-compensated OFDR
spatial resolution bandwidth- division noise-compensated OFDR
2015/5/18
We propose a bandwidth-division phase-noise-compensated optical frequency domain reflectometry technique. Using this approach, we realize a spatial resolution of 2 cm over 40 km in a normal laboratory...
Characterization of strongly spun fibers with spin rate exceeding OFDR spatial resolution
spun fibers spin rate xceeding OFDR spatial resolution
2015/5/18
We describe an OFDR-based procedure to measure the spin of optical fibers with spin rates exceeding OFDR resolution. Fibers are twisted to locally unwind the spin and measurements are afterward reasse...
Distributed Characterization of Bending-Induced Birefringence in Spun Fibers by means of P-OFDR
Fiber characterization Fiber measurements
2015/6/10
We report, for the first time, spatially-resolved measurements of bending-induced birefringence in ad hoc drawn single-mode spun fibers. The combined effect of spin rotation and bending birefringence ...
Sub-cm Spatial Resolution Reflectometry over 10 km Based on Phase Noise Compensated OFDR with Third Order Sideband Sweeping
Sub-cm Spatial Resolution Reflectometry Phase Noise Compensated OFDR
2015/7/15
We describe PNC-OFDR employing 3rd order sideband sweeping to realize a broader frequency sweep span. We achieved a sub-cm spatial resolution over a 10 km measurement range.