Abstract
In this paper, a biosensor based on photonic crystal fiber (PCF) is proposed and designed using Full-Vectorial Finite Element Method (FVFEM). The proposed PCF sensor consists of three concentric circles surrounding the core. The key optical sensor characteristics such as sensitivity, the field profiles and real part of the refractive index of the proposed PCF structure are investigated by employing the FVFEM. The proposed sensor can be deployed for environmental sensing when the PCF active region is filled with either analytes such as liquids or gas. By careful selection of the design parameters such as the radius of the sensing circle, the diameter of air holes in the core region and hole to hole spacing, Λ, the sensitivity analytes is determined. Our simulation results show that, the electric field distribution is primary localized in the third concentric circle with a radius of 16 μm. Effects of PCF bending on the sensitivity is also studied and reported.
Highlights
Photonic crystal fibers (PCFs), called holey fibers or microstructured fibers have, undoubtedly, one of theHow to cite this paper: Haxha, S., Teyeb, A., Malek, F.A., Akowuah, E.K. and Dayoub, I. (2015) Design of Environmental Biosensor Based on Photonic Crystal Fiber with Bends Using Finite Element Method
In this PCF biosensor, from the application point of view, we have examined a range of refractive indexes, in order to investigate the performance of the biosensor for various gas and liquid analyses
It is obvious that when the biosensor interacts with a certain known analytes, and in case if this analytes contains another unknown contaminant/substance the refractive index will change to unknown refractive index, we have taken a range of refractive indexes (e.g. 1.0 - 1.38) in order to test the performance of the biosensor and improve its sensitivity
Summary
Photonic crystal fibers (PCFs), called holey fibers or microstructured fibers have, undoubtedly, one of theHow to cite this paper: Haxha, S., Teyeb, A., Malek, F.A., Akowuah, E.K. and Dayoub, I. (2015) Design of Environmental Biosensor Based on Photonic Crystal Fiber with Bends Using Finite Element Method. Photonic crystal fibers (PCFs), called holey fibers or microstructured fibers have, undoubtedly, one of the. PCFs consist of air holes running parallel to its axis over the whole length. The guidance of light through these fibers is governed by the type of these structures. PCF usually consists of pure silica with an array of air holes in the cladding region. This structure creates band-gaps where propagation at certain optical frequencies is forbidden. The core is usually made by a defect in the periodic structure of the PCF cross-section. In PCFs, light can be guided either by the modified total internal reflection (TIR) or by the photonic band gap (PBG) effect
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
