Magnetic pulse generation for high-speed magneto-optic switching
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In this article, the magnetic pulse characteristics needed to achieve high-speed magneto-optic (MO) switching are investigated, and a fiber-based, MO, lowvoltage optical switch capable of 200 ns switching is presented, along with the special circuit characteristics for magnetic field generation for high speed switching.Abstract:
In this article, the magnetic pulse characteristics needed to achieve high-speed magneto-optic (MO) switching are investigated. A fiber-based, MO, low-voltage optical switch capable of 200 ns switching is presented, along with the special circuit characteristics for magnetic field generation for high-speed switching. The switch consists of the optical system, the MO material (bismuth substituted iron garnet [(Bi1.1Tb1.9)(Fe4.25Ga0.75)O12]), and a high-speed magnetic field driving circuit. A Faraday rotator is placed within the interferometric loop of a fiber-optic Sagnac interferometer, and interference at the output ports is controlled by the applied field. The fast switching speed is accomplished via the special design of the magnetic pulse generation circuitry. The applied magnetic field overshoots the field necessary to achieve the desired Faraday rotation and then settles to a steady state field. If the duration of the overshoot is less than the time it takes the material to saturate, a fast optical ...read more
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Terahertz-Magnetic-Field Induced Ultrafast Faraday Rotation of Molecular Liquids.
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References
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Journal ArticleDOI
Fabrication and characteristics of one-dimensional magnetophotonic crystals for magneto-optic spatial light phase modulators
TL;DR: In this paper, the reflection type magnetophotonic crystals (R-MPC) were used to enhance the magneto-optic property of magnetooptic spatial light phase modulator (MOSLM).
Journal ArticleDOI
Mach–Zehnder Interferometric Switch Utilizing Faraday Rotation
TL;DR: An all-fiber interferometric switch based on Faraday rotation exhibited by magneto-optic materials in the presence of an external magnetic field is reported in this paper.
Journal ArticleDOI
All-Optical Integrated Switch Utilizing Faraday Rotation
TL;DR: In this paper, a 1 × 1 integrated switch based on the polarization plane rotation of light in Bi-substituted iron garnets is reported using a Mach-Zehnder interferometer to achieve amplitude modulation.
Journal ArticleDOI
Field Coil for Magneto-Optic Switching: Capacitance Considerations
TL;DR: A tractable method for predicting the parasitic capacitance of a field coil as part of an all-fiber Mach-Zehnder interferometric switch based on Faraday rotation is reported in this paper.
Journal ArticleDOI
Imaging Capabilities of Bismuth Iron Garnet Films With Low Growth-Induced Uniaxial Anisotropy
TL;DR: In this paper, the imaging capabilities of the bismuth substituted iron garnet films with low growth-induced uniaxial anisotropy was studied. But the dependence of the film properties and imaging sensitivity on the lattice mismatch and film thickness is discussed.