Wenxing Yang
Yangtze University
OpticsPhysicsMicrofiberOptical vortexCardinal pointVortexTransverse planeBeam (structure)GratingCrystal
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Publications 3
#1Bingchuan Wang (Yangtze University)H-Index: 1
#2Liyong Ren (SNNU: Shaanxi Normal University)H-Index: 16
Last. Feng Song (Yangtze University)H-Index: 17
view all 9 authors...
Abstract Based on the photoelastic effect, a microtapered long-period fiber grating (MLPFG) is fabricated by using a CO2 fusion splicer, which has high repeatability and small loss. By analyzing the spectrum of the grating, it is easy to know that the grating has a significant absorption effect only for light with a specific wavelength (such as λ ≈ 1569 nm). In the process of fabrication, it is found that with the increase of refractive index modulation, the extinction ratio of the spectrum incr...
#1Shuai Sun (Yangtze University)H-Index: 1
#2Yiping Xu (Yangtze University)H-Index: 8
Last. Feng Song (Yangtze University)H-Index: 17
view all 13 authors...
Abstract In this paper, we propose a method based on microfiber double-knot resonator with a parallel structure to detect the volume content of the hybrid gases of CO and CO2. The primary principle is that the mixed gases with different volume ratios have different refractive indexes (RIs). The transmission spectrum of the microfiber resonator immersing into the hybrid gases with different volume ratios will produce a spectral drift. The volume content of the mixed gases can be detected using th...
1 CitationsSource
#1Shubo Cheng (Yangtze University)H-Index: 3
#2Tian Xia (CSU: Central South University)H-Index: 4
Last. Wenxing Yang (Yangtze University)
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Abstract A modified helical phase is presented in this paper. The generated vortex beams with the modified helical phases are characterized with ring-broken intensity distributions. The transverse intensity patterns of the generated vortex beams at a defined axial position and the focal plane are analyzed, respectively. The results demonstrate that the generated beam has an opening, whose size can be customized with a variable l ′ . The proposed vortex beams realized optical guiding of micropart...