Strong power absorption in a new microstructured holey fiber-based plasmonic sensor

A new resonant coupling between an analyte-filled core mode and a supermode in a multi-core holey fiber recently designed for sensing of benzene is investigated using a finite element method. The dominant electric field of the fundamental core supermode is in a high degree extended at this resonance from the hexagonal solid cores to the analyte (benzene) layer and vice versa for the analyte-filled fundamental core mode. The full width at half maximum (FWHM) bandwidth for the fundamental supermode is 5.3 nm. When the analyte refractive index is increased by 0.001 RIU, the phase matching point is shifted by 4.5 nm toward longer wavelengths, with a corresponding sensitivity better than 2.2 × 10-5 RIU and a very high value of the signal-to-noise ratio (0.85). The resonance of a fundamental supermode with the first order of surface plasmon resonance mode in the infrared region (λ = 1.33825 μ m ) can be used together with a resonant coupling between a fundamental supermode with an analyte fundamental mode in visible (λ = 0.6415 μ m ) part of the spectrum for increasing the performance of the sensor.

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A VERY HIGH AMPLITUDE SENSITIVITY OF A NEW MULTI-CORE HOLEY FIBER-BASED PLASMONIC SENSOR

Modern Physics Letters B ◽

10.1142/s0217984913500383 ◽

2013 ◽

Vol 27 (06) ◽

pp. 1350038 ◽

Cited By ~ 6

Author(s):

V. A. POPESCU

Keyword(s):

Transmission Loss ◽

Signal To Noise Ratio ◽

Water Layer ◽

High Amplitude ◽

Plasmon Mode ◽

Plasmonic Sensor ◽

Holey Fiber ◽

Resonant Coupling ◽

Group Refractive Index ◽

Better Than

The propagation characteristics in a new multi-core holey fiber-based plasmonic sensor are investigated using a finite element method. The fiber is made by a silica core with a small air hole in the center of the structure, surrounded by six air holes placed at the vertices of a hexagon, two layers of air holes arranged in a hexagonal way that are inserted in the SiO 2 core which is surrounded by a gold layer and a very thick distilled water layer. The structure is designed to have high amplitude sensitivity near the phase matching point corresponding to the maximum of the power fraction for a core guided supermode in the water and gold layers. The maximum of the imaginary part of the group refractive index is located to the same wavelength as the maximum of the amplitude sensitivity. The advantages of our design are a small value of FWHM parameter, a high value of the signal-to-noise ratio, a high value of the amplitude sensitivity (4040.9 RIU-1), a sensor resolution better than 2.5 × 10-6 RIU and a strong transmission loss of a core guided supermode at the resonant coupling due to efficient interaction with a plasmon mode.

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A multi-core holey fiber based plasmonic sensor with large detection range and high linearity

Optics Express ◽

10.1364/oe.20.005974 ◽

2012 ◽

Vol 20 (6) ◽

pp. 5974 ◽

Cited By ~ 145

Author(s):

Binbin Shuai ◽

Li Xia ◽

Yating Zhang ◽

Deming Liu

Keyword(s):

Plasmonic Sensor ◽

Detection Range ◽

Holey Fiber ◽

High Linearity

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Comparison of the performance of oscillating water column devices based on arrangements of water columns

JOURNAL OF MECHANICAL ENGINEERING AND SCIENCES ◽

10.15282/jmes.14.3.2020.10.0555 ◽

2020 ◽

Vol 14 (3) ◽

pp. 7082-7093

Author(s):

Jahirwan Ut Jasron ◽

Sudjito Soeparmani ◽

Lilis Yuliati ◽

Djarot B. Darmadi

Keyword(s):

Wave Propagation ◽

Water Column ◽

Water Depth ◽

Graphical Form ◽

Wave Power ◽

Oscillating Water Column ◽

Power Absorption ◽

Water Columns ◽

Single Column ◽

Parallel Arrangement

The hydrodynamic performance of oscillating water column (OWC) depends on the depth of the water, the size of the water column and its arrangement, which affects the oscillation of the water surface in the column. An experimental method was conducted by testing 4 water depths with wave periods of 1-3 s. All data recorded by the sensor is then processed and presented in graphical form. The research focused on analyzing the difference in wave power absorption capabilities of the three geometric types of OWC based on arrangements of water columns. The OWC devices designed as single water column, the double water column in a series arrangement which was perpendicular to the direction of wave propagation, and double water column in which the arrangement of columns was parallel to the direction of wave propagation. This paper discussed several factors affecting the amount of power absorbed by the device. The factors are the ratio of water depth in its relation to wavelength (kh) and the inlet openings ratio (c/h) of the devices. The test results show that if the water depth increases in the range of kh 0.7 to 0.9, then the performance of the double chamber oscillating water column (DCOWC) device is better than the single chamber oscillating water column (SCOWC) device with maximum efficiency for the parallel arrangement 22,4%, series arrangement 20.8% and single column 20.7%. However, when referring to c/h, the maximum energy absorption efficiency for a single column is 27.7%, double column series arrangement is 23.2%, and double column parallel arrangement is 29.5%. Based on the results of the analysis, DCOWC devices in parallel arrangement showed the ability to absorb better wave power in a broader range of wave frequencies. The best wave of power absorption in the three testing models occurred in the wave period T = 1.3 seconds.

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