صورة الغلاف

High-Spatial-Resolution High-Accuracy OFDR Distributed Sensors Based on Seamless fs-WFBG Array

محفوظ في:
الحاوية / القاعدة:Photonics vol. 12, no. 4 (2025), p. 352
المؤلف الرئيسي: Jin Zhengze
مؤلفون آخرون: Huang Wenzhu, Zhao Yuanjing, Zhang, Wentao
منشور في:
MDPI AG
الموضوعات:
Optical noise
Accuracy
Bragg gratings
Fourier transforms
Lasers
Spatial resolution
Optical frequency
Distributed sensor systems
Algorithms
Spatial discrimination
Light
Inscriptions
Demodulation
Laser arrays
Business metrics
الوصول للمادة أونلاين:Citation/Abstract
Full Text + Graphics
Full Text - PDF
الوسوم: إضافة وسم
لا توجد وسوم, كن أول من يضع وسما على هذه التسجيلة!
مستخلص:In optical frequency domain reflectometry (OFDR), the random optical noise in Rayleigh backscattering and the sliding window length in the algorithm cause a trade-off between sensing spatial resolution and accuracy. This paper proposes a novel high-spatial-resolution high-accuracy OFDR distributed sensor based on a seamless femtosecond weak fiber Bragg grating (WFBG) array. Using femtosecond laser point-by-point (PbP) inscription technology, a 5 cm long seamless weak grating array was successfully fabricated on a polyimide fiber, consisting of ten 5 mm long WFBGs. The experimental results demonstrate that a sensing spatial resolution of 533 μm and a wavelength demodulation accuracy of ±2.05 pm were achieved for the first time.
تدمد:2304-6732
DOI:10.3390/photonics12040352
المصدر:Advanced Technologies & Aerospace Database