关键词：弱反射光纤光栅阵列、弱栅、wfbg、拉丝塔光栅 弱反射光纤光栅，简称弱栅，是指反射率低于0.1%，甚至0.01%的光栅 ...

WFBG was first licensed on July 23, 1924, to the William F. Gable Co., owner of Gable's department store on 11th Avenue in Altoona, for 100 watts on 1150 kHz.The call letters were randomly assigned from a sequential list.

2023年11月1日 · A wide-range OFDR strain sensor was demonstrated based on femtosecond-laser-inscribed weak fiber Bragg grating (WFBG) array in standard SMF. A WFBG array consisting of 110 identical WFBGs was successfully fabricated along a 56 cm-long SMF. Compared with SMF, the cross-correlation coefficient of WFBG array was improved to 0.9 under the strain of 10,000 µε. The position deviation under the ...

弱反射光纤光栅（WFBG）阵列由于具有单纤抗拉强度、大规模复用等特性，近年来得到广泛关注，其在大规模结构健康监测和甚低频水声信号探测等领域具有潜在的应用价值。系统地综述了WFBG阵列的制备、解调与应用进展。在WFBG阵列制备方面，刻栅装置主要以拉丝塔Talbot和相位掩模板技术为主，在 ...

An optical frequency domain reflectometry (OFDR) shape sensor was demonstrated based on a femtosecond-laser-inscribed weak fiber Bragg grating (WFBG) array in a multicore fiber (MCF). A WFBG array consisting of 60 identical WFBGs was successfully inscribed in each core along a 60 cm long MCF using the femtosecond-laser point-by-point technology, where the length and space of each WFBG were 2 ...

弱反射光纤光栅 （wfbg）是利用紫外或飞秒激光器照射光纤而成，使具有光敏特性的纤芯产生周期性的折射率分布，从而形成敏感栅区，具有特征中心波长。 全同弱反射光纤光栅阵列是在一根光纤上密集刻写波长相同的wfbg，由于每个光栅的反射都比较弱，可实现一根光纤上复用成千上万个光 …

Abstract: We proposed a compact self-injection locked fiber laser, employing a weak fiber Bragg grating (wFBG) to achieve external feedback linewidth compression. The simulated results indicated that the output laser linewidth decreased with the increase of the length of the wFBG. According to the experimental results, the output laser linewidth was compressed to 300 Hz with an 8-mm long wFBG.

2021年11月16日 · 弱反射光纤光栅(WFBG)阵列由于具有单纤抗拉强度、大规模复用等特性,近年来得到广泛关注,其在大规模结构健康监测和甚低频水声信号探测等领域具有潜在的应用价值.系统地综述了WFBG阵列的制备、解调与应用进展.在WFBG阵列制备方面,刻栅装置主要以拉丝塔Talbot和相位掩模板技术为主,在光纤选型上则 ...

Tune in and listen to WFBG & WJHT POP 104.5 Radio live on myTuner Radio. Enjoy the best internet radio experience for free.

1 天前 · 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 …