Results 41 to 50 of about 1,333 (177)

Solid-state interferometric interrogator and multiplexer for high-speed dynamic and absolute FBG wavelength measurement [PDF]

open access: yes, 2013
We present a solid-state FBG array interrogator and multiplexer capable of determining absolute FBG wavelengths and of providing high-speed, high-resolution static and dynamic measurements.
Perry, Marcus   +7 more
core   +1 more source

High-Resolution Optical Fiber Temperature Sensor Based on Draw Tower Grating Array

open access: yesSensors, 2022
Ocean temperature monitoring is of great significance to marine fishing, aquaculture, and marine operations. Traditional electric sensors lack the potential to multiplex several sensors, and may suffer from electromagnetic interference.
Hanjie Liu   +5 more
doaj   +1 more source

Multiplexing a serial array of tapered optical fibre sensors using coherent optical frequency domain reflectometry [PDF]

open access: yes, 2012
The use of high spatial resolution optical frequency domain reflectometry (OFDR) to facilitate the multiplexing of a serial array of tapered optical fibre sensors is presented.
Tatam, Ralph P.   +3 more
core   +1 more source

Measurement of disruption forces in JET using fiber-optic sensors [PDF]

open access: yes, 2009
Monitoring the forces induced on the vacuum vessel when a disruption occurs is essential for the protection of the machine. Since divertor coils have been installed in JET, during disruptions a significant difference between the forces measured on the ...
Riccardo, V.   +18 more
core   +1 more source

High Efficient Random Laser with Cavity Based on the Erbium-Doped Germanophosphosilicate Artificial Rayleigh Fiber

open access: yesPhotonics, 2023
The Erbium “random” laser, based on the artificial Rayleigh fiber, has been comparatively studied in detail under two different pump conditions: 974.5 and 1485 nm pumping wavelengths.
Sergei Popov   +11 more
doaj   +1 more source

Wide wavelength-tuning of a double-clad Yb3+-doped fiber laser based on a fiber Bragg grating array [PDF]

open access: yes, 2007
We report wide wavelength tuning in a double-clad ytterbium-doped fiber laser. The laser cavity consist of an array of broadband high-reflection fiber. Bragg gratings and a bulk grating as output couples and wavelengt the selection element.
Alvarez-Chavez, J.A.   +5 more
core   +1 more source

Superstructured addressable fiber Bragg structures

open access: yesКомпьютерная оптика
We present results of a theoretical study of capabilities of multi-addressed fiber Bragg structures formed by combining an array of uniform low-reflection fiber Bragg gratings and specially structured discrete phase shifts.
B.I. Valeev   +4 more
doaj   +1 more source

Pretreatment of Ultra-Weak Fiber Bragg Grating Hydrophone Array Based on Cubic Spline Interpolation Using Intensity Compensation

open access: yesSensors, 2022
The demodulation algorithm based on 3 × 3 coupler in a fiber-optic hydrophone array has gained extensive attention in recent years. The traditional method uses a circulator to construct the normal path-match interferometry; however, the problem of ...
Yandong Pang   +5 more
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced 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   +7 more
wiley   +1 more source

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

open access: yesAdvanced 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   +5 more
wiley   +1 more source

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