Results 31 to 40 of about 7,750 (233)

High-Quality Fiber Bragg Gratings Inscribed by Femtosecond Laser Point-by-Point Technology

Micromachines, 2022
We experimentally studied the inscription of fiber Bragg gratings by using femtosecond (fs) laser point-by-point (PbP) technology. The effects of the focusing geometry, grating order, laser energy and grating length on the spectral characteristics of the
Runxiao Chen, Jun He, Xizhen Xu, Jiafeng Wu, Ying Wang, Yiping Wang   +5 more
doaj   +1 more source

Temperature monitoring system using fiber Bragg grating (FBG) approach [PDF]

AIP Conference Proceedings, 2020
In this paper, a temperature monitoring system is proposed by using fiber Bragg Grating (FBG) approach. This system can be done by using OptiSystem simulation and hardware implementation. FBG was employed as it allows a reflected wavelength of light that shifts in response to variations in temperature and/or strain. Generally, FBG sensors offer ease of
N. A. Rosman, C. B. M. Rashidi, S. A. Aljunid, R. Endut   +3 more
openaire   +1 more source

A simple and wavelength-flexible procedure for fabricating phase-shifted fibre Bragg gratings [PDF]

, 2010
A simple procedure for fabricating phase-shifted fibre Bragg gratings (PSFBGs) that does not require the use of a phase-shifted phase mask is presented.
Tatam, Ralph P., Stephen W James, Chehura, Edmon, James, Stephen W., Ralph P Tatam, Edmon Chehura   +5 more
core   +1 more source

Fiber Optic Fabry-Perot Current Sensor Integrated with Magnetic Fluid Using a Fiber Bragg Grating Demodulation

Sensors, 2015
An optical fiber current sensor based on Fabry-Perot interferometer using a fiber Bragg grating demodulation is proposed. Magnetic fluid is used as a sensitive medium in fiber optical Fabry-Perot (F-P) cavity for the optical characteristic of magnetic ...
Ji Xia, Qi Wang, Xu Liu, Hong Luo
doaj   +1 more source

A Hybrid Optical Fiber and FSO System for Bidirectional Communications Used in Bridges [PDF]

, 2015
In this paper, a 10-Gb/s hybrid optical fiber (OF) and free-space optics (FSO) link as part of a bidirectional long-haul OF transmission for application in outdoor environments such as bridges is proposed.
Ghassemlooy, Zabih, Yu, Yi-Lin, Liaw, Shien-Kuei, Chou, Hsi-Hsir, Le Minh, Hoa   +4 more
core   +1 more source

Hybrid Grating in Reduced-Diameter Fiber for Temperature-Calibrated High-Sensitivity Refractive Index Sensing

Applied Sciences, 2019
We propose and experimentally demonstrate a hybrid grating, in which an excessively tilted fiber grating (Ex-TFG) and a fiber Bragg grating (FBG) were co-inscribed in a reduced-diameter fiber (RDF).
Biqiang Jiang, Zhen Hao, Dingyi Feng, Kaiming Zhou, Lin Zhang, Jianlin Zhao   +5 more
doaj   +1 more source

Flexible protection architectures using distributed optical sensors [PDF]

, 2012
In this paper we describe recent developments in flexible protection schemes that make use of passive fibre Bragg grating (FBG) based transducers for the distributed measurement of voltage and current.
Nishida, Tomonori, Niewczas, Pawel, F. Kawano, P. Beaumont, Fusiek, Grzegorz, Booth, Campbell, Orr, Philip, C.D. Booth, P. Niewczas, Kawano, Fumio, A. Dysko, T. Nishida, Beaumont, Phil, P. Orr, G. Fusiek, Dysko, Adam   +15 more
core   +1 more source

Using a Fiber Loop and Fiber Bragg Grating as a Fiber Optic Sensor to Simultaneously Measure Temperature and Displacement

Sensors, 2013
This study integrated a fiber loop manufactured by using commercial fiber (SMF-28, Corning) and a fiber Bragg grating (FBG) to form a fiber optic sensor that could simultaneously measure displacement and temperature.
Hsu-Chih Cheng, Yue-Shiun Wu, Chih-Ta Yen, Yao-Tang Chang   +3 more
doaj   +1 more source

Bragg grating based integrated photonic Hilbert transformers [PDF]

, 2013
Planar Bragg grating based photonic Hilbert transformers are experimentally demonstrated in this work. Planar Bragg gratings are utilized to implement a general Hilbert transform, a fractional order Hilbert transform and terahertz bandwidth Hilbert ...
Smith, P.G.R., Sima, C., J. C. Gates, Chaotan Sima, M. N. Zervas, Gates, J.C., P. G. R. Smith, Zervas, M.N.   +7 more
core   +1 more source

Optical Fiber Bragg Grating Temperature Sensor

Diyala Journal of Engineering Sciences, 2014
In this work, uniform Fiber Bragg Grating (FBG) temperature sensor system were implemented and investigated due to measurement of the Bragg wavelength shift.
Marwan L. Yousf, Ihssan A. Kadham , Tahreer S. Mansour, Khalil I. Hajim   +3 more
doaj   +1 more source