Results 41 to 50 of about 40,614 (314)

Overwrite fabrication and tuning of long period gratings [PDF]

open access: yes, 2016
The central wavelengths of the resonance bands are critical aspect of the performance of long period gratings (LPGs) as sensors, particularly for devices designed to operate near the phase matching turning point (PMTP), where the sensitivity to ...
Barrington, James   +3 more
core   +1 more source

Miniature High-Sensitivity High-Temperature Fiber Sensor with a Dispersion Compensation Fiber-Based Interferometer [PDF]

open access: yes, 2009
A miniature high-sensitivity, high-temperature fiber sensor with an interferometer based on a bare small-core-diameter dispersion compensation fiber (DCF) is reported.
Dong, Bo, Wei, Li, Zhou, Da-Peng
core   +2 more sources

Design of a new method for detection of occupancy in the smart home using an FBG sensor [PDF]

open access: yes, 2020
This article introduces a new way of using a fibre Bragg grating (FBG) sensor for detecting the presence and number of occupants in the monitored space in a smart home (SH).
Fajkus, Marcel   +3 more
core   +1 more source

Influence of the waist diameters on transmission characteristics and strain sensitivity of microtapered long-period fiber gratings [PDF]

open access: yes, 2013
Transmission characteristics of microtapered long-period fiber gratings (MTLPGs) and their strain and temperature sensitivities with variations in the waist diameters are investigated theoretically and experimentally.
Han, Young-Geun   +3 more
core   +1 more source

Properties of length-apodized phase-shifted lpgs operating at the phase matching turning point

open access: yes, 2012
The characteristics of length-apodized phase-shifted fiber optic long period gratings with full and partial nanostructured coatings have been explored theoretically and experimentally.
James, Stephen W.   +2 more
core   +1 more source

Analytical method for designing grating compensated dispersion-managed soliton systems [PDF]

open access: yes, 2004
This paper was published in Journal of Optical Society of America B and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/abstract.cfm?URI ...
Kaliyaperumal, Nakkeeran   +2 more
core   +1 more source

Novel Fabrication Technique of Superimposed LPG with Different Grating Pitches for the Simultaneous Detection of Refractive Index and Temperature

open access: yesProceedings, 2019
Optical fiber sensors based on in-fiber Long Period Gratings (LPG) have attracted considerableinterest in the context of environmental, chemical and biochemical sensing. [...]
Cosimo Trono   +2 more
doaj   +1 more source

Chirped gratings in integrated optics [PDF]

open access: yes, 1977
Gratings with variable periods (chirped gratings) have been fabricated by recording the interference pattern of a collimated laser beam with a converging beam generated by a cylindrical lens.
Katzir, A.   +3 more
core   +1 more source

Dissimilar-fiber long-period fiber gratings: concept and demonstration

open access: yesApplied Optics, 2017
A new type of long-period fiber grating structure that contains dissimilar fiber types is proposed. This dissimilar-fiber long-period fiber grating (DF-LPFG) structure is fabricated by splicing together subperiod sections of dissimilar fiber types. Due to the large index differences that can exist between various fiber types, the resulting DF-LPFGs can
Pengfei, Wang, Thomas K, Gaylord
openaire   +2 more sources

Rapid characterization of the ultraviolet induced fiber Bragg grating complex coupling coefficient as a function of irradiance and exposure time [PDF]

open access: yes, 2007
We report the application of optical frequency domain reflectometry and a discrete-layer-peeling inverse scattering algorithm to the spatial characterization of the UV induced complex coupling coefficient during fiber Bragg grating growth.
Cranch, Geoffrey A.   +2 more
core   +1 more source

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