Graphene-Based Conducting Metal Oxide Coated D-Shaped Optical Fiber SPR Sensor

Patnaik, Amrit; Senthilnathan, K.; Jha, Rajan

doi:10.1109/lpt.2015.2467189

Cited by 121 publications

(34 citation statements)

References 20 publications

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“…When the analyte refractive indexes are 1.36-1.41, each variation of 0.01 in the refractive index causes a shift of 146.6 nm in the resonance wavelength on the average, indicating that an average spectral sensitivity of 14660 nm/RIU can be attained. This value is much higher than 3700 nm/RIU and 5700 nm/RIU described in Ref [31,32], respectively. A maximum spectral sensitivity is up to 43200 nm/RIU higher than the maximum spectral sensitivity of 17000 nm/RIU reported in Ref [33].…”

Section: Resultsmentioning

confidence: 51%

Symmetrical dual D-shape photonic crystal fibers for surface plasmon resonance sensing

Liu

et al. 2018

Opt. Express

223

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Symmetrical dual D-shape photonic crystal fibers (PCFs) for surface plasmon resonance (SPR) sensing are designed and analyzed by the finite element method (FEM). The performance of the sensor is remarkably enhanced by the directional power coupling between the two fibers. We study the influence of the structural parameters on the performance of the sensor as well as the relationship between the resonance wavelengths and analyze refractive indexes between 1.36 and 1.41. An average spectral sensitivity of 14660 nm/RIU can be achieved in this sensing range and the corresponding refractive index resolution is 6.82 × 10 RIU. The characteristics of a single D-shape PCF-SPR sensor with the same structural parameters are compared with those of the dual PCFs sensor and the latter has distinct advantages concerning the spectral sensitivity, resolution, amplitude sensitivity, and figure of merits (FOM).

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Section: Resultsmentioning

confidence: 51%

Symmetrical dual D-shape photonic crystal fibers for surface plasmon resonance sensing

Liu

et al. 2018

Opt. Express

223

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“…In many of these later fiber SPR sensing configurations, the cladding of the fiber is removed (sensing area) to allow for the deposition of a thin metallic (mostly Au or Ag) layer that supports the excitation of SPR and their interaction with optical waveguide modes of the fiber [4,5]. These configurations include the modified fiber end [6][7][8], tapered fiber [9], Dshaped fiber [4,[10][11][12][13][14][15][16], fiber grating [17], and photonic crystal fiber [18]. According to the control ability of coupling between optical fiber core modes and surface plasmon waves, more and more attention is being paid to the surface plasmon resonance sensor based on Dshaped photonic crystal fiber recent years.…”

Section: Introductionmentioning

confidence: 99%

Surface plasmon resonance biosensor based on gold-coated side-polished hexagonal structure photonic crystal fiber

et al. 2017

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The refractive index sensing characteristics of the side-polished photonic crystal fiber (PCF) surface plasmon resonance (SPR) sensor are detailed investigated in this paper. We used the finite element method (FEM) to study the influences of the side-polished depth, air hole size, lattice constant, and the refractive index (RI) of the PCF material on sensing performance. The simulation results show that the side-polished depth, air hole size, lattice pitch have significant influence on the coupling strength between core mode and surface plasmon polaritons (SPPs), but have little influence on sensitivity; the coupling strength and sensitivity will significant increase with the decrease of RI of the PCF material. The sensitivity of the D-shaped PCF sensor is obtained to be as high as 21700 nm/RIU in the refractive index environment of 1.33-1.34, when the RI of the PCF material is controlled at 1.36. It revealed a new method of making ultra-high sensitivity SPR fiber sensor. Then we experimental demonstrated a SPR refractive sensor based on the side-polished single mode PCF and investigated the sensing performance. The experimental results of the plasmon resonance wavelength sensitivity agree well with the theoretical results. The presented gold-coated D-shaped PCF SPR sensor could be used as a simple, cost-effective, high sensitivity device in bio-chemical detection.

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“…Nanocoated D-shaped optical fibers have great potential in the domain of sensors. Two main groups can be distinguished: surface plasmon resonance (SPR)- [1,2], and lossy-mode resonance (LMR)-based devices [3][4][5][6][7]. Regarding the latter group, some researchers classify LMR as guided mode resonance [8] or transverse electric (TE) and transverse magnetic (TM) resonances [3].…”

Section: Introductionmentioning

confidence: 99%

Optimization in nanocoated D-shaped optical fiber sensors

Villar¹,

Zubiate²,

Zamarreño³

et al. 2017

Opt. Express

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Nanocoated D-shaped optical fibers have been proven as effective sensors. Here, we show that the full width at half minimum (FWHM) of lossy mode resonance can be reduced by optimizing the nanocoating width, thickness and refractive index. As a counterpart, several resonances are observed in the optical spectrum for specific conditions. These resonances are caused by multiple modes guided in the nanocoating. By optimizing the width of the coating and the imaginary part of its refractive index, it is possible to isolate one of these resonances, which allows one to reduce the full width at half minimum of the device and, hence, to increase the figure of merit. Moreover, it is even possible to avoid the need of a polarizer by designing a device where the resonance bands for TE and TM polarization are centered at the same wavelength. This is interesting for the development of optical filters and sensors with a high figure of merit.

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Graphene-Based Conducting Metal Oxide Coated D-Shaped Optical Fiber SPR Sensor

Cited by 121 publications

References 20 publications

Symmetrical dual D-shape photonic crystal fibers for surface plasmon resonance sensing

Symmetrical dual D-shape photonic crystal fibers for surface plasmon resonance sensing

Surface plasmon resonance biosensor based on gold-coated side-polished hexagonal structure photonic crystal fiber

Optimization in nanocoated D-shaped optical fiber sensors

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