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Abstract
We correct an inaccurate statement on the birefringence measurement using the PA-OFDR in our previous publication [Opt. Express 28, 31253 (2020) [CrossRef] ].
© 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
In our previous publication [1], we stated that the birefringence measurements with our PA-OFDR were absolute, implying that no calibration was required. Although this statement is correct in principle for systems with sufficiently low noise, we find from our follow-up studies that the statement is inaccurate because the birefringence measurement results can be affected by parameters chosen for noise filtering. Consequently, calibration may be required with a birefringence standard. We therefore would like to modify the following sentences:
- 1) In the abstract, delete the word “absolute” in the sentence “The transverse line-force (TLF) distribution along a SMF can be directly obtained from the absolute measurement of birefringence…”.
- 2) In the 5th paragraph, Section 1, delete the sentence “Unlike the strain and temperature measurements with a regular OFDR which are relative with respect to a reference Rayleigh spectrum measurement, the birefringence measurements with our PA-OFDR are absolute and therefore exclude the inaccuracies of the references.”.
- 3) In the 1st paragraph, Section 4, replace the word “absolute” with “accurate” in the sentence “We show that our PA-OFDR system can perform absolute measurement of TF-induced birefringence, …”.
In addition, in the first paragraph of Section 2.1, replace the unit of Young's modulus “N/m” with “N/m2” in the sentence starting “Taking the parameters of fused silica...”. It should be mentioned that the main results, techniques, and conclusions presented in the published paper [1] would not be affected.
References
1. T. Feng, J. Zhou, Y. Shang, X. Chen, and X. S. Yao, “Distributed transverse-force sensing along a single-mode fiber using polarization-analyzing OFDR,” Opt. Express 28(21), 31253–31271 (2020). [CrossRef]