Hypersensitive H2 sensor based on polymer planar Bragg gratings coated with Pt-loaded WO3–SiO2: erratum

Stefan Kefer; Stefan Kefer; Jixiang Dai; Minghong Yang; Minghong Yang; Bernhard Schmauss; Ralf Hellmann

doi:10.1364/OL.401819

Abstract

We present an erratum to our Letter [Opt. Lett. 45, 3601 (2020) [CrossRef] ]. Labeling errors in two figures and an incorrect sentence are revised. The corrections have no influence on the conclusions of the original Letter.

In

Fig. 2. (a) Scanning electron microscope image of the applied Pt-loaded ${\rm{W}}{{\rm{O}}_3} {-} {\rm{Si}}{{\rm{O}}_2}$ coating. The inset shows the functionalized COC-PPBG probe. (b) Bragg reflection signal, after coating, at ${{\rm{H}}_2}$ concentrations of 0 ppm and 2000 ppm. (c) Surface refractive index in waveguide direction prior to coating.

Download Full Size | PDF

Figs. 2(b) and 4 of [1], the respective labeling of TE and TM reflection peak is corrected, as it is interchanged in the original publication. According to Fig. 4, the TM peak’s wavelength shift is approximately 5% greater than that of the TE reflection signal. This circumstance is also interchanged in the original Letter [1].

Fig. 4. Bragg wavelength shift as a function of hydrogen content in air for both modal reflection peaks.

Download Full Size | PDF

Funding

Natural Science Foundation of Hubei Province (2018CFB551); National Natural Science Foundation of China (61575151).

Acknowledgment

The authors are thankful to Steffen Hessler for discovering the error.

Disclosures

The authors declare no conflicts of interest.

REFERENCE

1. S. Kefer, J. Dai, M. Yang, B. Schmauss, and R. Hellmann, Opt. Lett. 45, 3601 (2020). [CrossRef]

Previous Article Next Article

Cited By

Optica participates in Crossref's Cited-By Linking service. Citing articles from Optica Publishing Group journals and other participating publishers are listed here.

Alert me when this article is cited.

Fig. 2. (a) Scanning electron microscope image of the applied Pt-loaded

${\rm{W}}{{\rm{O}}_3} {-} {\rm{Si}}{{\rm{O}}_2}$

coating. The inset shows the functionalized COC-PPBG probe. (b) Bragg reflection signal, after coating, at

${{\rm{H}}_2}$

concentrations of 0 ppm and 2000 ppm. (c) Surface refractive index in waveguide direction prior to coating.

View in Article | Download Full Size | PDF