Investigation of Fano resonance in compound resonant waveguide gratings for optical sensing

Jinhua Hu; Xiuhong Liu; Jijun Zhao; Jun Zou

doi:10.3788/COL201715.030502

Chinese Optics Letters, Volume. 15, Issue 3, 030502(2017)

Investigation of Fano resonance in compound resonant waveguide gratings for optical sensing

Jinhua Hu¹, Xiuhong Liu^2、*, Jijun Zhao¹, and Jun Zou³

Author Affiliations

¹The School of Information & Electrical Engineering, Hebei University of Engineering, Handan 056038, China

²The School of Mathematics & Physics, Hebei University of Engineering, Handan 056038, China

³College of Science, Zhejiang University of Technology, Hangzhou 310023, China

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Figures & Tables(7)

Fig. 1. Schematic of the CRWG sensor.

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Fig. 2. CRWG transmission spectra for TE eigenmodes corresponding to (a) ncl=1.330, (b) ncl=1.332, and (c) ncl=1.334.

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Fig. 3. CRWG resonance peak wavelength versus ncl.

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Fig. 4. CRWG transmission spectra for TE polarization and different L1, ncl=1.332, W1=302 nm, W2=202 nm, P=980 nm, and d=160 nm. (a) L1=206 nm, (b) L1=216 nm, (c) L1=226 nm, and (d) L1=231 nm.

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Fig. 5. CRWG transmission spectra for TE polarization with different ncl, L1=231 nm, P=980 nm, d=160 nm, W1=302 nm, and W2=202 nm.

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Table 1. Eigenvalues of TE Eigenmodes Corresponding to Different Refractive Indices
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Table 1. Eigenvalues of TE Eigenmodes Corresponding to Different Refractive Indices
Refractive Index $n_{cl}$ Eeigenvalue $N$
1.330 $1.20826 \times 10^{15} - 1.36527 \times 10^{12} i$
1.332 $1.20791 \times 10^{15} - 1.36523 \times 10^{12} i$
1.334 $1.20734 \times 10^{15} - 1.36514 \times 10^{12} i$

Table 2. Eigenvalues of TE Eigenmodes for Different L1
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Table 2. Eigenvalues of TE Eigenmodes for Different L1
$L_{1}$ (nm) Eigenvalue $N$
206 $1.20791 \times 10^{15} - 1.36523 \times 10^{12} i$
216 $1.20545 \times 10^{15} - 6.44717 \times 10^{11} i$
226 $1.20554 \times 10^{15} - 1.93664 \times 10^{11} i$
231 $1.20557 \times 10^{15} - 6.70643 \times 10^{10} i$

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Jinhua Hu, Xiuhong Liu, Jijun Zhao, Jun Zou, "Investigation of Fano resonance in compound resonant waveguide gratings for optical sensing," Chin. Opt. Lett. 15, 030502 (2017)

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