In this paper, a detailed investigation on the modeling of long-period fiber grating (LPFG) sensors is discussed with the aim of providing a more realistic solution for their use in biosensing. Add-layer sensitivity, i.e., sensitivity of the sensor to an additional layer adhered onto the fiber surface, is quantified and a clear and complete analysis about the influence of the average thickness of the deposited biological sensing layers, as well as the change in refractive index of these layers, on the resonant wavelength of the cladding modes of an LPFG is provided. Add-layer sensitivity of LPFG sensors close to mode transition (MT) and also at turn-around point (TAP) are taken into account. Adsorbed layer thicknesses, as estimated from measured wavelength shifts of the LPFG, are found to have a good match with the values obtained through other measurement techniques.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/AO.56.009846 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Controlled release of bioactive copper (I) acylthiourea complexes through immobilization onto electrospun PCL/lignin nanofibers.
Int J Biol Macromol
December 2024
Institute for Fiber Engineering and Science (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan. Electronic address:
This study presents the first development of Cu (I) acylthiourea complexes (C1-C5) incorporated polycaprolactone/lignin (PCL/Lig) electrospun nanofiber composites (PCL/Lig@Cu(I)). Electrospinning conditions and mass ratios of PCL and lignin were optimized, followed by the incorporation of varying concentrations of Cu(I) complexes. Structural, morphological, and thermal properties were characterized using SEM, TEM, FT-IR, XRD, TGA and WCA analyses.
View Article and Find Full Text PDFOptical fibre long-period grating sensors modified with antifouling bio-functional nano-brushes.
Biomater Sci
December 2024
FZU - Institute of Physics, Czech Academy of Sciences, Na Slovance 2, Prague 182 00, Czechia.
Recent advances in optical sensing technologies underpin the development of high-performance, surface-sensitive analytical tools capable of reliable and precise detection of molecular targets in complex biological media in non-laboratory settings. Optical fibre sensors guide light to and from a region of interest, enabling sensitive measurements of localized environments. This positions optical fibre sensors as a highly promising technology for a wide range of biochemical and healthcare applications.
View Article and Find Full Text PDFSandwich-Structured Fluorinated Polyimide Aerogel/Paraffin Phase-Change Composites Simultaneously Enables Gradient Thermal Protection and Electromagnetic Wave Transmission.
Adv Sci (Weinh)
December 2024
State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China.
Article Synopsis
- A new polyimide aerogel-based sandwich composite is created for both thermal protection and electromagnetic wave transparency.
- The composite consists of three layers: a unidirectional fluorinated PI aerogel at the bottom, a nondirectional conventional PI aerogel in the middle, and a nondirectional fluorinated PI aerogel/paraffin phase-change material on top.
- The innovative design allows for efficient heat management and communication between devices, making it suitable for use in aircraft, spacecraft, radar systems, and satellite communications.
Simultaneous generation of first- to fourth-order OAM modes based on a cascaded preset-twist long-period fiber grating.
Nanophotonics
July 2024
Institute of Modern Optics, Nankai University, Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, Tianjin 300350, China.
We propose and demonstrate the simulation and fabrication of an all-fiber orbital angular momentum (OAM) mode converter capable of generating first- to fourth-order modes simultaneously, which is realized by inscribing a cascaded preset-twist long-period fiber grating (CPT-LPFG) in a six-mode fiber utilizing a CO laser. A new segmented Runge-Kutta method is proposed to simulate the preset-twist long-period fiber gratings. By calculating the twist angle and relative coupling coefficient for each pitch and then solving the coupled mode equations utilizing the Runge-Kutta algorithm.
View Article and Find Full Text PDFRadiofrequency Ablation: Honoring the Pioneers of Modern Therapeutic Innovations.
Cureus
November 2024
Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, USA.
Article Synopsis
- * The technique has significantly advanced over time, improving in safety and effectiveness thanks to ongoing technological developments and research.
- * RFA's growing understanding and application mean it could treat a broader range of chronic pain issues, ultimately enhancing patients' quality of life.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!