Results 51 to 60 of about 651 (179)

Light Polarization-Assisted Sensing with Tilted Fiber Bragg Gratings [PDF]

The Open Optics Journal, 2013
Tilted fiber Bragg gratings (TFBGs) are short-period gratings for which the refractive index modulation of the fiber core is angled by a few degrees with respect to the perpendicular to the propagation axis. They induce two kinds of light coupling: the self-backward coupling of the core mode at the Bragg wavelength and the backward coupling between the
openaire   +1 more source

A buoyancy-based fiber Bragg grating tilt sensor [PDF]

SPIE Proceedings, 2017
In this paper, a novel design of fiber Bragg grating tilt sensor is proposed. This tilt sensor exhibits high angle sensitivity and resolution. The presented tilt sensor works on the principle of the force of buoyancy in a liquid. It has certain advantages over the other designs of tilt sensors.
Maheshwari, Muneesh, Yang, Yaowen, Chaturvedi, Tanmay   +2 more
openaire   +2 more sources

Region-Selective Corrosion for the Fabrication of Tilted Microfiber Bragg Gratings: A Candidate for the Monitoring of Buildings’ Health

Applied Sciences
Optical fiber gratings can be appropriately packaged and integrated for the real-time monitoring of the structural health of buildings or composite-material films. In this work, a tilted fiber Bragg grating at the micron scale was proposed, designed, and
Yufei Que, Jin Li
doaj   +1 more source

Fiber guided mode dispersion spectroscopy via control of spatial dimensions [PDF]

APL Photonics
The development of next-generation optical fiber grating devices is strongly influenced by intricate grating design, which must effectively capture guided mode dispersion.
Fu Liu, Dingyi Feng, Biqiang Jiang, Tuan Guo, Jianlin Zhao, Jacques Albert   +5 more
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Excitation of Surface Plasmons Using Tilted Planar-Waveguide Bragg Gratings

IEEE Photonics Journal, 2011
We present a planar-integrated optical surface plasmon refractometer. The fabricated device operates by grating-matched coupling between a core waveguide mode and a set of hybrid plasmon-dielectric modes of a much wider integrated structure.
C. Holmes, K. R. Daly, I. J. G. Sparrow, J. C. Gates, G. D'Alessandro, P. G. R. Smith   +5 more
doaj   +1 more source

Localized Temperature Monitoring in Mouse Brain during Light Delivery via a Non‐Planar Tapered Fiber‐Integrated µRTD Sensor

Advanced Materials, EarlyView.
We report a multifunctional tapered optical fiber integrating a conformal micro‐resistance temperature detector (µRTD) for local, real‐time thermometry during optical stimulation. The platform combines light‐delivery and temperature sensing within a minimally invasive footprint, enabling detection of sub‐degree cortical heating under representative ...
Antonio Balena, Marco Bianco, Barbara Spagnolo, Muhammad Fayyaz Kashif, Alberto Bramati, Massimo De Vittorio, Ferruccio Pisanello   +6 more
wiley   +1 more source

Single-Mode versus Multimode Fiber Bragg Grating Temperature Sensors: A Theoretical Study

Results in Optics
This paper aims to enhance understanding regarding the impact of the geometrical parameters of the grating on the transmission spectrum of single-mode and multimode fiber Bragg grating sensors and to compare the performance of both sensors for ...
Paul Stone Macheso, Mohssin Zekriti
doaj   +1 more source

Near‐Unity Chiral Lasing Enabled by Quasi‐Bound States in the Continuum

Advanced Materials, EarlyView.
Nanoimprinted chiral array that supports bound states in the continuum is doped with an efficient non‐chiral molecule (Rhodamine‐B) acting as gain medium to produce fully circularly polarized lasing emission. The chiral lasing wavelength can be tuned across the emission band of Rhodamine‐B by adjusting the coating thickness of the TiO2 high refractive ...
Jose Mendoza‐Carreño, Luis A. Pérez, Carlota Ruiz De Galarreta, Théo Rouanet, M. Isabel Alonso, Agustín Mihi   +5 more
wiley   +1 more source

Biosensing with optical fiber gratings

Nanophotonics, 2017
Optical fiber gratings (OFGs), especially long-period gratings (LPGs) and etched or tilted fiber Bragg gratings (FBGs), are playing an increasing role in the chemical and biochemical sensing based on the measurement of a surface refractive index (RI ...
Chiavaioli Francesco, Baldini Francesco, Tombelli Sara, Trono Cosimo, Giannetti Ambra   +4 more
doaj   +1 more source