Fiber grating sensors

Kersey, Alan D.; Davis, M. E.; Patrick, Heather J.; LeBlanc, Michel; Koo, K.P.; Askins, Charles G.; Putnam, Martin A.; Friebele, E. J.

doi:10.1109/50.618377

Cited by 3,326 publications

(1,723 citation statements)

References 79 publications

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“…Fiber gratings, firstly demonstrated in 1970s [19], have been extensively investigated from the fundamental theory to applications in optical communication [20], nonlinear signal processing [21], various types of sensors and lasers [22], [23]. With its inherent fiber format, the fiber grating devices have been intensively applied as reflection mirrors of fiber laser cavity [24].…”

Section: Introductionmentioning

confidence: 99%

Mode-Locked Erbium-Doped Fiber Lasers Using 45° Tilted Fiber Grating

Wang

Yan

Huang

et al. 2018

IEEE J. Select. Topics Quantum Electron.

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Abstract-We have systematically studied the 45° tilted fiber grating (45TFG) as a functional device for Erbium doped fiber laser (EDFL) mode locking. A number of 45TFGs with different polarization dependent loss (PDL) have been fabricated. Mode locked Erbium doped fiber laser using these devices have been characterized in terms of threshold, pulse duration, signal to noise ratio (SNR), and spectral width. Our results show that a 45TFG with higher PDL could achieve better laser results. By using a 45TFG with 24dB PDL, the mode locked laser has 8.1% conversion efficiency and a threshold of 200mW.

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Section: Introductionmentioning

confidence: 99%

Mode-Locked Erbium-Doped Fiber Lasers Using 45° Tilted Fiber Grating

Wang

Yan

Huang

et al. 2018

IEEE J. Select. Topics Quantum Electron.

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“…As is well known, the reflected wavelength (λ B ) of the FBG has correlation with its effective refractive index (n eff ) and grating pitch (Λ).The equation can be expressed as [44]:…”

Section: Optical Fiber Magnetic Filed Sensor Developmentmentioning

confidence: 99%

“…In order to prepare hydrogen sensor with good performance, novel hydrogen sensor combined with SP-FBG and Pd/Ag composite films, WO 3 A Lambda Physik excimer laser (COMPex-150T) operating at 248 nm was used as laser source to write FBG in SMF-28 by the phase mask method [20][21]. The optical cladding of the FBG fiber was mechanically ground by a motor-driven polishing wheel [22] and polished to about several micro-meters of minimal residual thickness near the fiber core.…”

Section: Introductionmentioning

confidence: 99%

Review on optical fiber sensors with sensitive thin films

Yang

Dai

2011

Photonic Sens

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Abstract:The combination of fiber optics with nano-structure technologies and sensitive thin films offers great potential for the realization of novel sensor concepts. Miniatured optical fiber sensors with thin films as sensitive elements could open new fields for optical fiber sensor applications. Thin films work as sensitive elements and transducer to get response and feedback from environments, in which optical fibers are employed to work as signal carrier. This article presents some research work conducted at the National Engineering Laboratory for Optical Fiber Sensing Technologies in recent years. Concrete examples are: Pd/WO 3 co-sputtered coating as sensing material for optical hydrogen sensors shows robust mechanical stability and meanwhile good sensing performance; TbDyFe magnetostrictive coating directly deposited on fiber Bragg grating (FBG) demonstrates its possibility of miniature optical magnetic field/current sensors, and 40-pm shift of the FBG wavelength happens at a magnetic field order of 50 mT.

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“…It is a non-destructive technique. Optical fibre long period grating based sensing methods offer other advantages of electromagnetic interference immunity, compactness, ease of fabrication and multiplexing [16].…”

Section: Introductionmentioning

confidence: 99%

Metglas thin film based magnetostrictive transducers for use in long period fibre grating sensors

Thomas

Mathew

Radhakrishnan

et al. 2010

Sensors and Actuators A: Physical

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a b s t r a c tMetallic glass alloy Metglas 2826 MB based amorphous magnetic thin films were fabricated by the thermal evaporation technique. Transmission electron micrographs and electron diffraction pattern showed the amorphous nature of the films. Composition of the films was analyzed employing X-ray photoelectron spectroscopy and energy dispersive X-ray spectroscopy techniques. The film was integrated to a long period fibre grating. It was observed that the resonance wavelength of the fibre grating decreased with an increase in the magnetic field. Change in the resonance wavelength was minimal at higher magnetic fields. Field dependent magnetostriction values revealed the potential application of these films in magnetostrictive sensor devices.

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Fiber grating sensors

Cited by 3,326 publications

References 79 publications

Mode-Locked Erbium-Doped Fiber Lasers Using 45° Tilted Fiber Grating

Mode-Locked Erbium-Doped Fiber Lasers Using 45° Tilted Fiber Grating

Review on optical fiber sensors with sensitive thin films

Metglas thin film based magnetostrictive transducers for use in long period fibre grating sensors

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