Response characteristics of refractive-index gradient based on long-period fiber gratings

Mingfu, 赵明富 Zhao; Xi, 韩汐 Han; Binbin, 罗彬彬 Luo; Bo-si, 王博思 Wang; Xiao-li, 全晓莉 Quan

doi:10.3788/ope.20132102.0316

Cited by 3 publications

(1 citation statement)

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“…According to the law of refraction:The ratio of sine of refraction angle and incident angle and refractive index of refraction is equal to the ratio of the refracted rate( n ) of incident light and the refracted rate( n′ ) of refraction light,i.e [4,5] . sin sin…”

Section: The New Formula Of Principle Of V Prism Refractometer Methodsmentioning

confidence: 99%

Study on Measuring System of Automatic Image Alignment Refractive Index Based on New Mathematical Model

Yao

Cao

Liu

2014

KEM

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With the development of measuring technology,the measuring accuracy of optical glass refractive index of the increasingly high demand,V prism refractometers is major general instrument for measuring the refractive index of optical glass,not only the simple device,convenient measurement,and this method has high precision performance,however,the accuracy is only attained ,which in the regulation of national metrology verification and the introduction of V prism refractometers in the literature,the classic formula calculation principle formula error caused by refractive index has more than .Based on the mechanical structure and optical transmission to improve the original V prism refractometers the refractive index of air,by considering the influence on measurement precision of V prism refractometer,to mathematical modeling of V prism refractometer the principle formula,V can be measured refractive prism refractometer rate accuracy increased to ,measurement repeatability less than ,has important practical significance for realizing high accuracy measurement of the refractive index of optical glass.

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Section: The New Formula Of Principle Of V Prism Refractometer Methodsmentioning

confidence: 99%

Study on Measuring System of Automatic Image Alignment Refractive Index Based on New Mathematical Model

Yao

Cao

Liu

2014

KEM

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A Multi-Azimuth Angle Sensor for Tilt Measuring Based on LPFG Array

Cao

et al. 2021

IEEE Sensors J.

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Experimental Study of Resonant Frequency Tunable Piezoelectric Energy Harvester

Zhang

Kan

Liu

et al. 2013

AMM

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Abstract. To improve energy harvesting performance, a resonance frequency tunable piezoelectric (PZT) energy harvester for vibrating applications was presented and investigated experimentally. A piezoelectric vibrational energy harvester (PVEH) consisted of a piezo-cantilever with a permanent magnet at its free-end and another excitation magnet fixed on vibration structure. The two magnets are placed with the same magnetic poles facing each other to produce repulsive force. The cantilever has dimensions of 70x10x0.6mm3, clamped 10mm, and two magnets sized ø10x4mm3. The testing results show that the magnetic force, denoted by the initial separated distance between the magnetic dipoles (SDMD), exerts great influence on the generated performance. With the SDMD increasing from 15mm to 40mm, the generated voltage rises from 24.4V to 40V, and the resonant frequency increases from 33.75Hz to 38.75Hz.

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Response characteristics of refractive-index gradient based on long-period fiber gratings

Cited by 3 publications

References 0 publications

Study on Measuring System of Automatic Image Alignment Refractive Index Based on New Mathematical Model

Study on Measuring System of Automatic Image Alignment Refractive Index Based on New Mathematical Model

A Multi-Azimuth Angle Sensor for Tilt Measuring Based on LPFG Array

Experimental Study of Resonant Frequency Tunable Piezoelectric Energy Harvester

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