Highly efficient symmetrical dual-channel D-type photonic crystal fiber surface plasmon resonance sensor

Hairui Fang; Chenjing Wei; Wenjuan Jiang; Dong Wang; Jing Li

doi:10.1364/JOSAB.433209

Journal of the Optical Society of America B
Vol. 39,
Issue 1,
pp. 1-8
(2022)
•https://doi.org/10.1364/JOSAB.433209

Highly efficient symmetrical dual-channel D-type photonic crystal fiber surface plasmon resonance sensor

Hairui Fang, Chenjing Wei, Wenjuan Jiang, Dong Wang, and Jing Li

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Hairui Fang, Chenjing Wei, Wenjuan Jiang, Dong Wang, and Jing Li, "Highly efficient symmetrical dual-channel D-type photonic crystal fiber surface plasmon resonance sensor," J. Opt. Soc. Am. B 39, 1-8 (2022)

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Abstract

In order to improve the efficiency and accuracy of analytes’ refractive index (RI) detection, a symmetrical dual-channel D-type photonic crystal fiber surface plasmon resonance sensor is proposed. Dependent on the characteristics of dual-channel structure, the analytes are filled in both sides of the channel at the same time. The full vector finite-element method is adopted for numerical analysis to optimize the structural parameters of the sensor. The results show that when the silver (Ag) and titanium dioxide (${\rm{Ti}}{{\rm{O}}_2}$) layer thickness are 50 nm and 10 nm, respectively, the Ag-${\rm{Ti}}{{\rm{O}}_2}$ microgratings number in one side channel is 50, and the spacing is 30 nm. The maximum wavelength sensitivity is 14,000 nm/RIU for both channels for the RI changing from 1.33 to 1.40. It is proved that it can detect analytes’ RI in two channels at the same time. And the use scene of the sensor is explained in detail. As a result, it can not only reduce the time cost of cleaning the detection channel and checking the symmetry of two channels, but also be used to judge whether the RI of analytes in two channels is the same, which improves the detection efficiency and accuracy in biology and chemistry.

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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Thickness ( $t_{2}$ , nm)	Wavelength Sensitivity ( $S_{w}$ , nm/RIU)	FWHM (nm)	FOM ( ${R I U}^{- 1}$ )
5	2500	17.07	146.46
10	2500	16.99	147.15
15	2700	18.83	143.39

									Wavelength
Number	Resonance Wavelength ( $λ_{p e a k}$ , nm)								Sensitivity
( $N$ )	1.33	1.34	1.35	1.36	1.37	1.38	1.39	1.40	( $S_{w}$ , nm/RIU)
1	568	593	622	657	700	754	845	964	11,900
10	574	608	635	668	710	765	857	978	12,100
20	586	611	640	675	719	774	862	991	12,900
30	593	618	648	684	727	783	870	1003	13,300
40	600	625	655	691	735	791	878	1015	13,700
50	607	632	663	699	743	800	886	1026	14,000
60	614	640	670	707	751	807	895	1035	14,000

									Wavelength
Distance	Resonance Wavelength ( $λ_{p e a k}$ , nm)								Sensitivity
( $d_{0}, n m$ )	1.33	1.34	1.35	1.36	1.37	1.38	1.39	1.40	( $S_{w}$ , nm/RIU)
0	568	593	622	657	700	754	845	964	11,900
10	582	607	637	672	716	771	858	989	13,100
20	595	620	651	687	731	787	873	1010	13,700
30	607	632	663	699	743	800	886	1026	14,000
40	616	642	673	709	753	808	894	1033	13,900
50	623	649	679	714	758	810	895	1029	13,400

	RI ( $n_{a}$ , RIU)
RI ( $n_{b}$ , RIU)	1.33	1.34	1.35	1.36	1.37	1.38	1.39	1.40
1.33	607	607/632	607/663	607/699	606/743	607/800	607/886	607/1026
1.34	607/632	633	633/663	633/699	633/743	633/800	633/886	633/1026
1.35	607/663	633/663	663	663/699	663/743	663/800	663/886	663/1026
1.36	607/699	633/699	663/699	699	699/743	699/799	699/886	700/1026
1.37	607/743	633/743	663/743	699/743	743	743/799	743/886	743/1025
1.38	607/800	633/800	663/800	699/800	743/799	799	799/885	800/1025
1.39	607/886	633/886	663/886	699/886	743/886	799/885	885	886/1024
1.40	607/1026	633/1026	663/1026	699/1026	743/1026	799/1025	886/1024	1026

RI ( $n_{a}$ , RIU)	$S_{1.33}$ (nm/RIU)	$S_{1.34}$ (nm/RIU)	$S_{1.35}$ (nm/RIU)	$S_{1.36}$ (nm/RIU)	$S_{1.37}$ (nm/RIU)	$S_{1.38}$ (nm/RIU)	$S_{1.39}$ (nm/RIU)	$S_{1.40}$ (nm/RIU)
1.33	2500	2500	2600	2600	2700	2600	2600	2600
1.34	3100	3000	3000	3000	3000	3000	3000	3000
1.35	3600	3600	3600	3600	3600	3600	3600	3700
1.36	4400	4400	4400	4400	4400	4400	4400	4300
1.37	5700	5700	5700	5700	5600	5600	5600	5700
1.38	8600	8600	8600	8600	8700	8600	8600	8600
1.39	14,000	14,000	14,000	14,000	14,000	14,000	13,900	14,000
1.40	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A

RI ( $n_{a}$ , RIU)	Resonance Wavelength ( $λ_{p e a k}$ , nm)	Wavelength Sensitivity ( $S_{w}$ , nm/RIU)	Wavelength Resolution ( $R$ , RIU)	Resonance Intensity ( $L_{p e a k}$ , dB/cm)
1.33	607	2500	$5.00 \times 1 0^{- 5}$	40.31
1.34	632	3100	$3.23 \times 1 0^{- 5}$	33.49
1.35	663	3600	$2.78 \times 1 0^{- 5}$	41.04
1.36	699	4400	$2.27 \times 1 0^{- 5}$	51.79
1.37	743	5700	$1.75 \times 1 0^{- 5}$	68.28
1.38	800	8600	$1.16 \times 1 0^{- 5}$	96.27
1.39	886	14,000	$7.14 \times 1 0^{- 6}$	151.63
1.40	1026	N/A	N/A	190.12

PCF-SPR Sensor	RI (RIU)	Maximum Sensitivity (nm/RIU)	Resolution (RIU)
Ref. [21]	1.33–1.40	11,600(ChA)	$8.62 \times 1 0^{- 6}$
		10,600(ChB)	$9.71 \times 1 0^{- 6}$
Ref. [20]	1.30–1.40	1000(Ch1)	N/A
		3750(Ch2)
Ref. [31]	1.33–1.35	2300	$4.3 \times 1 0^{- 5}$
Ref. [26]	1.5255–1.5781	1951(Ch1)	N/A
	1.3253–1.3726	2496(Ch2)
Ref. [32]	1.33–1.39	8860.93	N/A
Ref. [33]	1.42–1.46	15,000	$6.67 \times 1 0^{- 6}$
Proposed	1.33–1.40	14,000	$7.14 \times 1 0^{- 6}$

Abstract

Data Availability

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Figures (11)

Tables (7)

Equations (6)

Journal of the Optical Society of America B