Modeling and analysis of high-sensitivity refractive index sensors based on plasmonic absorbers with Fano response in the near-infrared spectral region

Fatemeh Tavakoli; Ferdows B. Zarrabi; Hamed Saghaei

doi:10.1364/AO.58.005404

Applied Optics
Vol. 58,
Issue 20,
pp. 5404-5414
(2019)
•https://doi.org/10.1364/AO.58.005404

Modeling and analysis of high-sensitivity refractive index sensors based on plasmonic absorbers with Fano response in the near-infrared spectral region

Fatemeh Tavakoli, Ferdows B. Zarrabi, and Hamed Saghaei

Not Accessible

Your library or personal account may give you access

Get PDF
Email
Share
Get Citation
Copy Citation Text
Fatemeh Tavakoli, Ferdows B. Zarrabi, and Hamed Saghaei, "Modeling and analysis of high-sensitivity refractive index sensors based on plasmonic absorbers with Fano response in the near-infrared spectral region," Appl. Opt. 58, 5404-5414 (2019)

Export Citation
- BibTex
- Endnote (RIS)
- HTML
- Plain Text
Citation alert
Save article

Check for updates

Abstract

In this paper, we present various optical metamaterial nanoabsorbers with the aim of improving the refractive index sensitivity using the Fano response. The proposed absorbers consist of various parasitic elements such as single cross, broken cross, Jerusalem cross, and also single L and double L models. We numerically study their absorption and reflection using the three-dimensional finite-difference time-domain method and calculate the sensitivity and figure of merit (FOM) in every absorption peak (reflection dip). Our simulations reveal that the Fano resonance at longer wavelengths can be used for increasing the sensitivity and FOM. The proposed absorbers have been coated with an external material with a maximum thickness of 100 nm and refractive indices in the range of 1.05–1.2. We also study and compare the FOM for these structures. They are modified for 900 and 1200–1300 nm. The maximum FOM is achieved around $2400 {RIU}^{- 1}$ for the double L nanoabsorber coated with 1.05 indexed material, while its sensitivity is 473 nm/RIU. This absorber is an appropriate component for the design of highly sensitive optical sensors.

Full Article | PDF Article

More Like This

Refractive index sensor based on multiple Fano resonances in a plasmonic MIM structure

Zhengfeng Li, Kunhua Wen, Li Chen, Liang Lei, Jinyun Zhou, Dongyue Zhou, Yihong Fang, and Bingye Wu
Appl. Opt. 58(18) 4878-4883 (2019)

Ultra-compact high-sensitivity plasmonic sensor based on Fano resonance with symmetry breaking ring cavity

GuiQian Lin, Hui Yang, Yan Deng, Dandan Wu, Xuan Zhou, Yunwen Wu, Guangtao Cao, Jian Chen, Wanmei Sun, and Renlong Zhou
Opt. Express 27(23) 33359-33368 (2019)

Tunable metasurface refractive index plasmonic nano-sensor utilizing an ITO thin layer in the near-infrared region

Fatemeh Baranzadeh and Najmeh Nozhat
Appl. Opt. 58(10) 2616-2623 (2019)

Previous Article Next Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (6)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (7)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

	$n = 1.05$	$n = 1.1$	$n = 1.15$	$n = 1.2$
$Δ λ$	7.45	17	24.7	36.6
$S$	149.1	169.5	164.6	182.8
FOM	186	200.5	176.7	141.6

	$n = 1.05$	$n = 1.1$	$n = 1.15$	$n = 1.2$
$Δ λ_{1}$	9.3	18.8	28.5	38.4
$S_{1}$	186	188	190	192
${FOM}_{1}$	38.5	36.3	29	23.7
$Δ λ_{2}$	12.8	25.8	39.2	52.85
$S_{2}$	255.6	258.4	261.3	264.25
${FOM}_{2}$	2.15	3.2	3.25	3

	$n = 1.05$	$n = 1.1$	$n = 1.15$	$n = 1.2$
$Δ λ_{1}$	11.1	22.4	36.9	51.7
$S_{1}$	221.6	224	245.7	258.6
${FOM}_{1}$	7.25	3.5	2	1.1
$Δ λ_{2}$	14.4	29.1	44.2	59.6
$S_{2}$	287.6	291	294.5	298
${FOM}_{2}$	29.35	44.8	47	43.2

	$n = 1.05$	$n = 1.1$	$n = 1.15$	$n = 1.2$
$Δ λ_{1}$	10.8	22	33.4	45.1
$S_{1}$	217.3	220	222.8	225.7
${FOM}_{1}$	679.35	220.2	17.1	162.7
$Δ λ_{2}$	11.7	23.6	35.9	48.5
$S_{2}$	233.3	236.4	239.5	242.7
${FOM}_{2}$	129.7	37.3	13.8	6.2
$Δ λ_{3}$	28.6	58.5	89.8	122.6
$S_{3}$	572.6	585.4	598.8	612.9
${FOM}_{3}$	37.6	32.7	26	21.7

	$n = 1.05$	$n = 1.1$	$n = 1.15$	$n = 1.2$
$Δ λ_{1}$	15.4	31.3	47.8	65
$S_{1}$	307.3	312.95	318.85	325
${FOM}_{1}$	10.1	8.3	5.9	4.4
$Δ λ_{2}$	14.5	29.4	44.7	60.3
$S_{2}$	291	294.4	298	301.6
${FOM}_{2}$	2426.2	657.1	144.3	44.9
$Δ λ_{3}$	22.5	45.7	69.75	94.6
$S_{3}$	449.6	457.2	465	473
${FOM}_{3}$	10.95	13.3	12.1	10.4

Reference	Frequency Range	FOM	Structure	Footprint ( $nm \times nm \times nm$ )
Zafar and Salim [41]	near-infrared	176	MIM waveguide	$800 \times 800 \times 1000$
Liu et al. [42]	near-infrared	56.5	split-ring metasurface	$700 \times 700 \times 110$
Farmani et al. [19]	near-infrared	283	gold metasurface	$500 \times 500 \times 190$
Farmani [22]	near-infrared	1097	perfect absorber	$40 \times 60 \times 31$
Chen et al. [44]	near-infrared	3476	MIM waveguide	–
This work	near-infrared	2424	perfect absorber	$500 \times 500 \times 120$

Abstract

Cited By

Figures (10)

Tables (6)

Equations (7)

Applied Optics