Results 81 to 90 of about 247,892 (261)

Advanced fibre Bragg gratings: application to dispersion compensation

open access: yes, 1999
This thesis presents the design and fabrication issues related to advanced fibre Bragg gratings with particular emphasis on realising novel devices with application to dispersion compensation.
Durkin, Michael Kevan
core  

A transverse loading technique to enhance the pressure measurement capability of fibre Bragg gratings [PDF]

open access: yes, 2008
A fibre optic pressure sensor based on the application of a transverse load onto an epoxy-resin material embedded over a sub-section of a fibre Bragg grating (FBG) is presented.
R. Correia   +7 more
core   +1 more source

Suppression of parasitic lasing effects in fiber laser amplifiers using long period gratings

open access: yes, 2022
Paper BW3A.5A concept to mitigate parasitic self lasing effects in mid-IR fiber amplifiers by means of efficient long period fiber gratings is shown. Using tightly confined ultrashort laser pulses at 800 nm the gratings are directly inscribed into the ...
Gauthier, J.-C.   +5 more
core   +1 more source

Laser-frequency locking techniques for high-sensitivity strain measurements by high-birefringence fiber Bragg gratings and resonators [PDF]

open access: yes, 2007
A new approach to simultaneously interrogate orthogonal axes of single Fiber- Bragg-Gratings (FBGs) and FBG-FabryPerot resonator sensors fabricated in linearly highly birefringent (HiBi) fibre is presented.
Ferraro, P.   +13 more
core   +1 more source

Three-Dimensional Chirped High-Contrast Grating Hollow-Core Waveguide

open access: yesIEEE Photonics Journal, 2012
A 3-D chirped high-contrast grating hollow-core waveguide (HCG-HW) exhibits highly efficient 2-D (transverse and lateral) light confinement. Compared with step-index ones, laterally chirped HCG-HWs (graded index) can pronouncedly reduce the propagation ...
Yang Yue   +10 more
doaj   +1 more source

Preliminary Notice of the Results Accomplished in the Manufacture and Theory of Gratings for Optical Purposes

open access: yesNature, 1882
IT is not many years since physicists considered that a spectroscope constructed of a large number of prisms was the best and only instrument for viewing the spectrum, where great power was required.
H. Rowland
semanticscholar   +1 more source

Optimization of neutron diffraction from phase-gratings

open access: yes, 2018
The recent development of phase-grating moir\'e neutron interferometry promises a wide range of impactful experiments from dark-field imaging of material microstructure to precise measurements of fundamental constants.
H. Wen (9002213)   +8 more
core   +1 more source

Optimizing Plasmonic Grating Sensors for Limit of Detection Based on a Cramer–Rao Bound

open access: yesIEEE Photonics Journal, 2010
We explore the impact of the geometrical features such as the period, duty cycle, and thickness on the performance of a metal-dielectric plasmonic grating sensor.
Salman Karbasivalashani, Arash Mafi
doaj   +1 more source

Fibre Bragg gratings for dispersion compensation in optical communications

open access: yes, 1997
The main activities and recent developments towards the implementation of meter-long, high-performance fibre grating dispersion compensators in the Optoelectronics Research Centre, Southampton University are reviewed.
Laming, R.I.   +5 more
core  

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