Longitudinal field-induced polarized light transmittance of magnetic fluids

Pu, Shengli; Dai, Min; Sun, Guoqing

doi:10.1016/j.optcom.2010.06.028

Cited by 17 publications

(8 citation statements)

References 44 publications

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“…The ferrofluid of valid optical path (the size of light to pass through) is 10 μm order of magnitude. Details about the Faraday measurement were reported [24]. the transverse axis indicates the used magnetic field B, and the longitudinal axis indicates the Faraday rotation angle degree of sample.…”

Section: Preparing Fe-al Oxide Ferrofluid and Faraday Rotation Measurmentioning

confidence: 99%

Synthesis and Faraday Effect of Fe-Al Oxide Composite Ferrofluid

Dai¹,

Pu²

2015

AMPC

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A kind of ferrofluid containing Fe-Al oxide composite nanometer particles was synthesized. The ferrofluid made of Fe-Al oxide composite nanometer particles which ratio was Fe:Al 2 O 3 = 3:1 and thermally treated at 300˚C showed Faraday effect approximate linearity versus the magnetic field B, and a relatively excellent Faraday effect without saturation in varying 0-1.5T magnetic field, which provided a method for synthesizing the ferrofluid of Faraday rotation still continuing in a relatively high magnetic field.

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Section: Preparing Fe-al Oxide Ferrofluid and Faraday Rotation Measurmentioning

confidence: 99%

Synthesis and Faraday Effect of Fe-Al Oxide Composite Ferrofluid

Dai¹,

Pu²

2015

AMPC

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“…For an oil-based ferrite magnetic fluid with saturation magnetization of 100 Oe, viscosity of 9 mPa•s, and average particle diameter of 10 nm, the longitudinal magnetic-fieldinduced transmitted power of polarized light due to hybrid effects of Faraday rotation and geometric shadowing is given by (the polarization direction of the analyzer is set 45 • with 2 Advances in Optical Technologies respect to that of the incident light to obtain the maximum sensitivity) [9]…”

Section: Formulismmentioning

confidence: 99%

“…If the polarized light is applied for the longitudinal magnetic field configuration, Faraday rotation and geometric shadowing effect will happen simultaneously. In our previous work, we have disclosed that several parameters may influence the magnetic-field-dependent optical transmittance of magnetic fluids due to hybrid effects of Faraday rotation and geometric shadowing [9]. But only the thin samples with small values of reduced thickness (d/λ, where d is the thickness of the magnetic fluids and λ is the wavelength of the incident light in vacuum) have been considered in that work.…”

Section: Introductionmentioning

confidence: 99%

Reduced-Thickness-Dependent Polarized Light Transmittance of Magnetic Fluids under Longitudinal Magnetic Field

Bai

Wang

2011

Advances in Optical Technologies

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The polarized light transmittance of magnetic fluids under longitudinal magnetic field (parallels the propagation direction of the incident light) is simulated theoretically. The investigated samples are with different reduced thickness (d/λ) in a wide range. Theoretical simulations reveal that the sample reduced thickness has a significant influence on the polarized light transmittance. The thin and thick samples have distinctly different dependence of polarized light transmittance on magnetic field strength. Based on the reduced-thickness- and magnetic-field-dependent polarized light transmittance, several magnetic-fluid-based photonic devices are proposed and discussed.

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“…The transmittance of the MF can also be modulated by external magnetic field. This phenomenon is referred to as the field dependent transmission property of MF [82][83][84][85][86][87][88][89]. The field dependent transmission property of MF found some applications in the optical devices such as magnetic field sensor, switch and modulator [82,88,90].…”

Section: Field Dependent Transmission Of Magnetic Fluidmentioning

confidence: 99%

“…The field dependent transmission property of MF found some applications in the optical devices such as magnetic field sensor, switch and modulator [82,88,90]. The physical mechanism for the field dependent transmission of MF can be divided into two cases, saying the transverse field transmittance and the longitudinal field transmittance [83].…”

Section: Field Dependent Transmission Of Magnetic Fluidmentioning

confidence: 99%

Investigation of magneto-optical properties of magnetic fluid for fiber optics applications

Zu¹

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Magnetic fluid (MF) is a novel kind of magneto-optical functional material that possesses diverse magneto-optical properties such as tunable refractive index, birefringence effect, dichroism effect, Faraday effect, field dependent transmission property and so on. It can serve as the magnetically sensitive material playing the key role in magnetic field sensors and magneto-optical devices. There were many reported photonic devices based on MF in the literatures. This thesis focuses on investigating the magneto-optical properties of MF for fiber optics applications. The thesis first reviewed the background knowledge including the MF, optical fibers and optical fiber interferometry. The physical origin of refractive index tunability and birefringence effect of MF are detailedly discussed in preparation for the works in the following Chapters. In the thesis, we have presented three kinds of MF-based magnetic field sensors. The first one is based on the birefringence effect of MF. The MF is inserted into an optical fiber Loyt-Sagnac interferometric configuration in the form of MF film. The sensitivity characteristics of this optical fiber Loyt-Sagnac interferometric configuration are theoretically analyzed and experimentally verified. Finally, a sensitivity of 59.2 pm/Oe is achieved by applying the conclusions drawn from the theoretical analysis to the proposed magnetic field sensing configuration. The second one is based on refractive index tunability of MF and the evanescent field of photonic crystal fiber with air-holes collapse. The evanescent light field interacts with the MF and translates the magnetic field strengths into optical signals. A Mach-Zehnder interferometric configuration formed by cascading two sections of v

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Longitudinal field-induced polarized light transmittance of magnetic fluids

Cited by 17 publications

References 44 publications

Synthesis and Faraday Effect of Fe-Al Oxide Composite Ferrofluid

Synthesis and Faraday Effect of Fe-Al Oxide Composite Ferrofluid

Reduced-Thickness-Dependent Polarized Light Transmittance of Magnetic Fluids under Longitudinal Magnetic Field

Investigation of magneto-optical properties of magnetic fluid for fiber optics applications

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