Metallic nanoparticles on waveguide structures: effects on waveguide mode properties and the promise of sensing applications: erratum

T. Cheng; C. Rangan; J. E. Sipe

doi:10.1364/JOSAB.31.002845

Abstract

We provide here corrected numerical values for Figs. 5, 6, 7, 9(b), and 11 in our article [J. Opt. Soc. Am. B 30, 743 (2013) [CrossRef] ].

In a recent publication [1], Cheng et al. argued that a waveguide (WG) coated with gold nanoparticles (NPs) should have an improved sensitivity over traditional surface plasmon resonance biosensors. Although the qualitative results of the study regarding the improvement in sensitivity are correct, errors in the numerical calculations resulted in several figures reporting incorrectly scaled values.

The corrected numerical values are as follows: the $y$ axis in Fig. 5 must be reduced by a factor of 29. The $y$ axes in Figs. 6 and 11 should be reduced by a factor of 29.5. The corrected versions of Figs. 7 and 9(b) are shown as Figs. 1 and 2.

Fig. 1. Peak wavelengths of the absorption curve as a function of cladding relative permittivity. The dotted curve represents a single particle, whereas the solid curve shows the NP-coated WG. The WG properties are as specified in Fig. 6 of the original publication, and the NP array parameters are given in the legend.

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Fig. 2. (b) Sensitivity factor $H$ for a bulk index NP-waveguide sensor, as described in the original text. We take $a = 30 nm$ , $b = h = 10 nm$ . The cladding’s relative permittivity changes from 1.0 to 1.5 in increments of 0.1.

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ACKNOWLEDGMENTS

The authors would like to thank students Iterio Degli-Eredi and Daniel-Anthony Travo for discussions and calculations leading to the corrected results.

REFERENCE

1. T. Cheng, C. Rangan, and J. E. Sipe, “Metallic nanoparticles on waveguide structures: effects on waveguide mode properties and the promise of sensing applications,” J. Opt. Soc. Am. B 30, 743–765 (2013). [CrossRef]

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Fig. 1. Peak wavelengths of the absorption curve as a function of cladding relative permittivity. The dotted curve represents a single particle, whereas the solid curve shows the NP-coated WG. The WG properties are as specified in Fig. 6 of the original publication, and the NP array parameters are given in the legend.

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Fig. 2. (b) Sensitivity factor

H

for a bulk index NP-waveguide sensor, as described in the original text. We take

a = 30 nm

,

b = h = 10 nm

. The cladding’s relative permittivity changes from 1.0 to 1.5 in increments of 0.1.