Research on photonic crystal fiber based on a surface plasmon resonance sensor with segmented silver-titanium dioxide film

Hairui Fang; Chenjing Wei; Dong Wang; Long Yuan; Shengxi Jiao; Zhiyu Bao; Hanrui Yang

doi:10.1364/JOSAB.373395

Journal of the Optical Society of America B
Vol. 37,
Issue 3,
pp. 736-744
(2020)
•https://doi.org/10.1364/JOSAB.373395

Research on photonic crystal fiber based on a surface plasmon resonance sensor with segmented silver-titanium dioxide film

Hairui Fang, Chenjing Wei, Dong Wang, Long Yuan, Shengxi Jiao, Zhiyu Bao, and Hanrui Yang

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Hairui Fang, Chenjing Wei, Dong Wang, Long Yuan, Shengxi Jiao, Zhiyu Bao, and Hanrui Yang, "Research on photonic crystal fiber based on a surface plasmon resonance sensor with segmented silver-titanium dioxide film," J. Opt. Soc. Am. B 37, 736-744 (2020)

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- Fiber Optics
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About this Article
History
- Original Manuscript: July 26, 2019
- Revised Manuscript: January 12, 2020
- Manuscript Accepted: January 15, 2020
- Published: February 13, 2020

Abstract

A photonic crystal fiber based on a surface plasmon resonance sensor coated with segmented silver-titanium dioxide (${\rm Ag} \text{-} {{\rm TiO}_2}$) film is proposed for microfluid refractive index sensing. The sensing properties of the designed sensor are analyzed numerically by the full-vectorial finite element method. The results display that the wavelength sensitivity can be tuned by the thickness of the ${{\rm TiO}_2}$ film and segmented number and angle of the ${\rm Ag} \text{-} {{\rm TiO}_2}$ film. It is observed that an average sensitivity of 6329 nm/RIU for refractive indexes ranging from 1.330 to 1.360, and a maximum wavelength sensitivity of 10600 nm/RIU with a high wavelength resolution of ${9.43} \times {{10}^{ - 6}}\;{\rm RIU}$, can be achieved in the sensing range of 1.350 to 1.355. In addition, it also shows a maximum amplitude sensitivity of ${633.4001}\;{{\rm RIU}^{ - 1}}$, and the maximum figure of merit is 303 with ${n_a}$ varying from 1.330 to 1.360, which can be applied to the field of chemical and biological analysis.

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Thickness ( $d_{1}$ , nm)	Resonance Wavelength ( $λ_{p e a k}$ , nm)		Wavelength Sensitivity ( $S_{w}$ , nm/RIU)	FWHM (nm)
	1.330	1.340
40	569	605	3600	23
45	584	624	4000	23
50	594	635	4100	28

Thickness of ${T i O}_{2}$ ( $d_{2}$ , nm)	Resonance Wavelength ( $λ_{p e a k}$ , nm)				Wavelength Sensitivity ( $S_{w}$ , nm/RIU)	Resonance Intensity ( $L_{p e a k}$ dB/cm)
Thickness of ${T i O}_{2}$ ( $d_{2}$ , nm)	1.330	1.340	1.350	1.360	Wavelength Sensitivity ( $S_{w}$ , nm/RIU)	Resonance Intensity ( $L_{p e a k}$ dB/cm)
0	576	613	662	752	5770	67.94586717
5	577	615	665	757	5900	65.75943557
10	581	620	672	769	6160	65.51821417
15	584	624	677	777	6320	63.78889292
20	587	628	683	787	6550	61.24554021
25	590	631	686	795	6700	58.03541245

Number ( $N$ )	Resonance Wavelength ( $λ_{p e a k}$ , nm)				Wavelength Sensitivity ( $S_{w}$ , nm/RIU)	Resonance Intensity ( $L_{p e a k}$ , dB/cm)
Number ( $N$ )	1.330	1.340	1.350	1.360	Wavelength Sensitivity ( $S_{w}$ , nm/RIU)	Resonance Intensity ( $L_{p e a k}$ , dB/cm)
0	515	547	592	654	4620	19.61703985
10	544	573	615	679	4470	25.66476537
20	552	589	638	709	5200	35.68051596
30	568	605	654	756	6130	47.45864567
40	584	624	677	777	6320	63.78889292
50	601	642	710	—	5450	81.38159702
60	616	657	727	—	5550	97.52110834
70	632	685	746	—	5700	121.7759199

Angle ( $θ$ )	Resonance Wavelength ( $λ_{p e a k}$ , nm)				Wavelength Sensitivity ( $S_{w}$ , nm/RIU)	Resonance Intensity ( $L_{p e a k}$ , dB/cm)
Angle ( $θ$ )	1.330	1.340	1.350	1.360	Wavelength Sensitivity ( $S_{w}$ , nm/RIU)	Resonance Intensity ( $L_{p e a k}$ , dB/cm)
0°	515	547	592	654	4620	19.61703985
0.1°	526	561	605	676	4940	22.4620929
0.2°	540	574	622	693	5070	28.67424537
0.3°	553	590	638	710	5190	34.68435838
0.4°	563	600	650	752	6170	41.97636279
0.5°	574	613	665	764	6220	49.49041558
0.6°	584	624	677	777	6320	63.78889292
0.7°	593	632	686	—	4650	71.94099944

Refractive Index ( $n_{a}$ , 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)	FWHM (nm)	DA ( ${n m}^{- 1}$ )	FOM	Amplitude Sensitivity ( $S_{a}$ , ${R I U}^{- 1}$ )	Amplitude Resolution (RIU)
1.330	584	3800	$2.63 \times 10^{- 5}$	63.78889292	21	0.048	181	441.2219	$2.27 \times 10^{- 5}$
1.335	603	4200	$2.38 \times 10^{- 5}$	70.24180593	30	0.033	140	551.359	$1.81 \times 10^{- 5}$
1.340	624	4400	$2.27 \times 10^{- 5}$	93.77662321	24	0.042	183	454.4807	$2.20 \times 10^{- 5}$
1.345	646	6200	$1.61 \times 10^{- 5}$	105.4844396	29	0.034	214	546.309	$1.83 \times 10^{- 5}$
1.350	677	10600	$9.43 \times 10^{- 6}$	140.4202166	35	0.029	303	371.6708	$2.69 \times 10^{- 5}$
1.355	730	9400	$1.04 \times 10^{- 5}$	183.3197813	69	0.014	136	633.4001	$1.58 \times 10^{- 5}$
1.360	777	N/A	N/A	384.5797461	76	0.013	N/A	N/A	N/A

PCF-SPR Sensor	Refractive Index (RIU)	Average Sensitivity (nm/RIU)	Wavelength Sensitivity (nm/RIU)	Wavelength Resolution (RIU)	Amplitude Sensitivity ( ${R I U}^{- 1}$ )	Published Year
Ref. [44]	1.33–1.37	N/A	4000	$2.5 \times 10^{- 5}$	478	2017
Ref. [28]	1.23–1.29	5500	N/A	$7.69 \times 10^{- 6}$	333.8	2017
Ref. [45]	1.33–1.37	N/A	4200	$2.38 \times 10^{- 5}$	300	2018
Ref. [34]	1.36–1.38	3340	N/A	$5.98 \times 10^{- 6}$	N/A	2018
Ref. [29]	1.32–1.34	N/A	5000	$2.0 \times 10^{- 5}$	167	2018
Ref. [46]	1.32–1.34	N/A	7000	N/A	N/A	2019
Ref. [47]	1.385–1.40	N/A	10000	$2.0 \times 10^{- 5}$	70	2019
Proposed	1.330–1.360	6329	10600	$9.43 \times 10^{- 6}$	633.4001	N/A

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Journal of the Optical Society of America B