Magnetic field sensor using tilted fiber grating interacting with magnetic fluid

Zheng, Jie; Dong, Xinyong; Zu, Peng; Shao, Liyang; Chan, Chi Chiu; Cui, Ying; Shum, Ping

doi:10.1364/oe.21.017863

Cited by 94 publications

(27 citation statements)

References 24 publications

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“…0 -tilted fiber grating has been proposed to be used as in-fiber polarizer for mode-locking [23,24]. LA-TFG, which is a type of tilted grating with tilted angle larger than 45 0 , has been employed previously as fiber sensors for strain, twist, loading, refractive index (RI) and liquid level [25][26][27][28][29]. Our used LA-TFG was inscribed in H 2 -loaded standard telecom fiber (SMF-28) by use of a frequency-doubled Ar + laser and the scanning mask technique.…”

Section: Experiments Setup and Resultsmentioning

confidence: 99%

Orthogonally polarized bright–dark pulse pair generation in mode-locked fiber laser with a large-angle tilted fiber grating

et al. 2016

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Abstract:We report on the generation of orthogonally polarized bright-dark pulse pair in a passively mode-locked fiber laser with a large-angle tilted fiber grating (LA-TFG). The unique polarization properties of the LA-TFG, i.e. polarization-dependent loss and polarization-mode splitting, enable dual-wavelength mode-locking operation. Besides dual-wavelength bright pulses with uniform polarization at two different wavelengths, the bright-dark pulse pair has also been achieved. It is found that the bright-dark pulse pair is formed due to the nonlinear couplings between lights with two orthogonal polarizations and two different wavelengths. Furthermore, harmonic mode-locking of bright-dark pulse pair has been observed. The obtained bright-dark pulse pair could find potential use in secure communication system. It also paves the way to manipulate the generation of dark pulse in terms of wavelength and polarization, using specially designed fiber grating for mode-locking.

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Section: Experiments Setup and Resultsmentioning

confidence: 99%

Orthogonally polarized bright–dark pulse pair generation in mode-locked fiber laser with a large-angle tilted fiber grating

et al. 2016

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“…MF is one kind of magnetic field-sensitive material and has many attractive magneto-optic properties, for example, birefringence property, Faraday property, and magnetic-induced RI tunability [19][20][21][22]. It becomes one subject of numerous studies to combine MF with optical fiber for the measurement of external magnetic field [23,24] and MF birefringence [25]. The magnetic field devices can be constructed by immersing MF as the cladding of a long-period fiber grating [26,27], by controlling MF coated on subwavelength fiber to realized optical modulator [28], and by using MF as a sensitive medium in fiber optic F-P cavity [29].…”

Section: Introductionmentioning

confidence: 99%

Multidimensional microstructured photonic device based on all-solid waveguide array fiber and magnetic fluid

Miao

et al. 2016

Nanophotonics

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An all-solid waveguide array fiber (WAF) is one kind of special microstructured optical fiber in which the higher-index rods are periodically distributed in a lowindex silica host to form the transverse two-dimensional photonic crystal. In this paper, one kind of multidimensional microstructured optical fiber photonic device is proposed by using electric arc discharge method to fabricate periodic tapers along the fiber axis. By tuning the applied magnetic field intensity, the propagation characteristics of the all-solid WAF integrated with magnetic fluid are periodically modulated in both radial and axial directions. Experimental results show that the wavelength changes little while the transmission loss increases for an applied magnetic field intensity range from 0 to 500 Oe. The magnetic field sensitivity is 0.055 dB/Oe within the linear range from 50 to 300 Oe. Meanwhile, the all-solid WAF has very similar thermal expansion coefficient for both high-and low-refractive index glasses, and thermal drifts have a little effect on the mode profile. The results show that the temperatureinduced transmission loss is < 0.3 dB from 26°C to 44°C. Further tuning coherent coupling of waveguides and controlling light propagation, the all-solid WAF would be found great potential applications to develop new micro-nano photonic devices for optical communications and optical sensing applications.

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“…In recent years, much effort has been put on the development of magnetic-field-tuned photonic devices based on the combination of optical fibers and MF due to their distinguished advantages such as high sensitivity, linear response, and compact size. To exploit the special characteristics of the MF, including tunable refractive index, magneto-optical effects, thermal lens-effects, birefringence, magneto-chromatics and nonlinear optical effect [18], the magnetic field devices can be constructed by MF-filled photonic crystal fibers (PCFs) [19], MF cylinder immersed into air-gap [20], immersing MF as the cladding of a long-period fiber grating [21], using the magneticfield-tuned tilted fiber grating [22], and a bare fiber core immersed in the MF [23]. According to present related reports, the microstructure and mode field property of optical fibers, as a key supporter of MF, have also an impact on the physical property of the MF.…”

Section: Introductionmentioning

confidence: 99%

Magnetic field tunability of square tapered no-core fibers

Miao

Lin

et al. 2014

SPIE Proceedings

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A magnetic-field-tuned photonics device based on magnetic fluid (MF) and a square tapered no-core fiber (NCF) sandwiched between two single-mode fibers (SMFs) has been proposed. The enhanced evanescent field effect in the NCF is achieved by tapering the square NCF utilizing a fusion splicer. The spectral dependence of the proposed device on the applied magnetic-field intensity has been investigated. The results indicate that a maximal sensitivity of -18.7pm/Oe is obtained for a magnetic field strength ranging from 25Oe to 450Oe. The proposed tunable device has several advantages, including low cost, ease of fabrication, compact structure, and high sensitivity.

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Magnetic field sensor using tilted fiber grating interacting with magnetic fluid

Cited by 94 publications

References 24 publications

Orthogonally polarized bright–dark pulse pair generation in mode-locked fiber laser with a large-angle tilted fiber grating

Orthogonally polarized bright–dark pulse pair generation in mode-locked fiber laser with a large-angle tilted fiber grating

Multidimensional microstructured photonic device based on all-solid waveguide array fiber and magnetic fluid

Magnetic field tunability of square tapered no-core fibers

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