Method to estimate the reflection-induced retardance of bulk glass optical current sensing head

Zhao, Yancheng; Wang, Zhengping; Li, Qingbo; Sun, Weimin; Wang, Huili; Feng, Ruiying

doi:10.1016/s0030-3992(03)00007-0

Cited by 4 publications

(5 citation statements)

References 2 publications

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“…The RIR has to be measured in advance using the method reported in reference [4] with only a polarizer and an analyser.…”

Section: Optical Set-up and Methods For The Measurementmentioning

confidence: 99%

“…The measuring method and uncertainty analysis of the RIR inside sensing heads are reported in reference [4]. The final result is…”

Section: Measurement Uncertainty Analysis Formentioning

confidence: 99%

“…where the computational method of δ is detailed in [4]. Thus the total measurement uncertainty of γ meas is…”

Section: Measurement Uncertainty Analysis Formentioning

confidence: 99%

See 2 more Smart Citations

Method for measuring linear birefringence inside bulk glass current-sensing elements

Wang¹,

Li²,

Ouyang³

et al. 2004

Meas. Sci. Technol.

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Linear birefringence is one of the most important parameters of optical (fibre-optic) current-sensing heads, which can obviously affect the performance of optical current sensors. Therefore, it is of great importance to measure the linear birefringence inside the optical current-sensing head to enhance the properties of sensors. A novel method to measure the linear birefringence inside bulk glass current-sensing heads is reported in this paper, which gives a theoretical analysis of the principle, the measurement uncertainty analysis—using the Jones matrix as a mathematical tool—and an applied example. This method overcomes the shortcomings of the two methods reported before which cannot uniquely determine the value of the linear birefringence or introduce large measurement uncertainty. The experimental result shows that this method can certainly enhance the measurement precision.

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“…The RIR has to be measured in advance using the method reported in reference [4] with only a polarizer and an analyser.…”

Section: Optical Set-up and Methods For The Measurementmentioning

confidence: 99%

“…The measuring method and uncertainty analysis of the RIR inside sensing heads are reported in reference [4]. The final result is…”

Section: Measurement Uncertainty Analysis Formentioning

confidence: 99%

See 1 more Smart Citation

Method for measuring linear birefringence inside bulk glass current-sensing elements

Wang¹,

Li²,

Ouyang³

et al. 2004

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Eq. (6) shows that the sensitivity of the sensor can be improved by increasing the effective optical path. In Eq.…”

Section: Principle Of Avoiding Reflection Phase Shiftmentioning

confidence: 99%

“…However, according to Fresnel formula, a phase shift between the p-and s-components of the light beam would be also induced during the total reflection, which is usually called reflection phase shift (or reflection-induced retardance) [5]. Such a reflection phase shift may change the linear polarized light into an elliptical polarized light [6] and degrade the measurement sensitivity and accuracy of the BGOCT. To solve this problem three approaches have been brought forwards, such as dual-quadrature reflection, critical angle, and polarization preserving total reflection (PPTR) methods [7,8].…”

Section: Introductionmentioning

confidence: 99%