Enhancement of Refractive Index Sensitivity in Photonic Crystal Waveguide-Based Sensors by Selective Infiltration

• Authors: F. Bagci , B. Akaoglu
• Languages of publication: EN

Abstracts

EN

We present a liquid refractive index sensor based on a photonic crystal waveguide slab structure. Sensing mechanism employed in this study is based on the shift in cut-off wavelength as the lattice holes are selectively infiltrated. Three-dimensional plane-wave expansion and finite-difference time-domain methods are used to determine the band structure and transmission spectra, respectively. First, the sensitivity of the device is analyzed for the structure where only the first rows of holes adjacent to the line-defect are infiltrated. In addition, this analysis is repeated for a range of hole diameters. Second, the effects of infiltrated holes which are placed in the line-defect are investigated. As these infiltrated central holes are introduced, the proposed device exhibits 5.3 times improved sensitivity.

Keywords

EN

42.70.Qs; 78.67.Pt; 07.07.Df; 42.79.-e

Discipline

• 42.70.Qs: Photonic bandgap materials(for photonic crystal lasers, see 42.55.Tv)
• 78.67.Pt: Multilayers; superlattices; photonic structures; metamaterials(see also 81.05.Xj, Metamaterials for chiral, bianisotropic and other complex media)
• 07.07.Df: Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
• 42.79.-e: Optical elements, devices, and systems(for integrated optics, see 42.82.-m; for fiber optics, see 42.81.-i)

• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 124
• Issue: 1
• Pages: 50-55

Dates

published

2013-07

received

2012-11-02

(unknown)

2013-04-10

Contributors

author

F. Bagci

• Ankara University, Faculty of Engineering, Department of Engineering Physics, 06100 Besevler, Ankara, Turkey

author

B. Akaoglu

• Ankara University, Faculty of Engineering, Department of Engineering Physics, 06100 Besevler, Ankara, Turkey

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Identifiers

DOI

10.12693/APhysPolA.124.50