This paper has presented yttrium iron garnet yig and lithium niobate linbo3 which are examined for use as a wideband magnetooptic modulator. Lambeth advanced magnetooptic spatial light modulator device development. We have constructed a magnetooptic modulator using calcium vanadium garnet cavg polycrystal which is easy to work with. Pdf magnetooptical modulator for superconducting digital. The discussion presented in this chapter applies to any electrooptic material, any direction of the applied voltage, and any direction of the wave vector. Magnetooptical recording june 27, 2014 40 the university of alabama. Pdf a gigahertz surface magnetoplasmon optical modulator. A new optical modulator, based on magnetooptic effect and spintronic technology, achieves optical modulation using pure spin current without net.
Recent advances of wide band magnetooptical modulators in. Optic modulator types electrooptic modulator acoustooptic modulator magnetooptic modulator 3. Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. The magneto optic modulator that can be used in this frequency band can overcome all of these deficiencies. Amplitude and phasefrequency characteristics of the magneto. Magnetooptical modulator for superconducting digital interface. Magnetooptic principles, materials and applications. The surface magnetooptic kerr effect smoke has recently been demonstrated to be a powerful in situ characterization. We propose a novel magnetooptical approach for the repetition frequency stabilization of optical frequency combs. This article presents the theoretical calculations of spatial distribution of the amplitude and phase characteristics of the stokes vector for a magneto optical modulator based on the magneto optical crystal in the framework of a bimorph plate of rectangular shape for the fundamental mode of magneto mechanical oscillations.
A magnetooptic modulator modulates signals from a superconducting circuit such as a singlefluxquantum sfq logic system onto a carrier wave light beam. Techniques are described for a device that includes an optical channel configured to transport an optical signal. Spin magnetooptical modulator 20160103 university of. We havedeeply investigated the recent advances of wide band magneto optical. Magneto optic current transformer, ask latest information, magneto optic current transformer abstract,magneto optic current transformer report,magneto optic current transformer presentation pdf,doc,ppt,magneto optic current transformer technology discussion,magneto optic current transformer paper presentation details,magneto optic current transformer, ppt, pdf. We show that effcient conversion can be achieved so long as the product of the optical and microwave cooperativity factors can be made large. A magnetooptic effect is any one of a number of phenomena in which an electromagnetic wave propagates through a medium that has been altered by the presence of a quasistatic magnetic field. Enhanced sensitivity of magnetooptical sensor using. Gaas electro optic modulator the best modulator crystal produced under this program was a gaas crystal incorporated into the modulator shown in figures 1 and 2, which operated in the wave length range from 0. This electrically alterable magneto optic device can be used as a twodimensional spatial light modulator in an optical image processor or a display system.
Weber, and sasha kemmet electrical and computer engineering department. The magnetooptic modulator rotates a polarization of a light incident to a magnetooptic device which. Gallium arsenide, which has the potential to modulate at wave lengths as great as 16. The modulator is formed by depositing a magneto optic material such as euse onto a superconducting ground plane such as that of the circuit. This modulator does not induce mechanical resonances and as such has the. We propose a novel magneto optical approach for the repetition frequency stabilization of optical frequency combs. Pdf we propose an ultrafast magnetooptic mo modulator for the sfqtooptical digital interface. Electrooptic modulators scientists and engineers rely on our optical modulators for exceptional performance, quality, ease of use, broad selection, and excellent value. Magnetooptical modulator for superconducting digital. Recently, slms have received much attention as a light modulator in holographic data storage which requires high speed slms for ensuring the high data transfer rate.
Maldonado department of electrical engineering the uni y ersity of texas at arlington arlington, texas 1 3. We havedeeply investigated the recent advances of wide band magneto optical modulators in advanced high speed optical communication systems over wide range of the affecting operating parameters as shown in table 1. The existence of an interaction between light and sound was discovered by brillouin in the. A gigahertz surface magnetoplasmon optical modulator. Magneto optical sensor can be used for magneto optic modulators and optical switches. The history of magnetooptical effects is first introduced. Twodimensional magnetooptic spatial light modulator for. Dec 09, 2003 a magneto optic modulator modulates signals from a superconducting circuit such as a singlefluxquantum sfq logic system onto a carrier wave light beam. Osa paramagneto and electrooptic microcavities for. The beam may be carried over free space, or propagated through an optical waveguide optical fibre. Finally, basic bulk electrooptic modulators are described in the fourth section, modulator devices including some design considerations and performance criteria. Operating parameters for magneto optical modulators. Magnetooptic modulator for high bandwidth cavity length. Magnetooptical phase modulation in integrated mach.
The device is based on an erbium doped crystal placed in both an optical and microwave resonator. Advanced magnetooptic spatial light modulator device development. A magneto optic modulator modulates signals from a superconducting circuit such as a singlefluxquantum sfq logic system onto a carrier wave light beam. In this field, the application of a magneto optic slm moslm is highly expected because of extremely fast pixel switching speed. Complete magnetooptic modulation of lateral and angular shifts in. Magnetooptical modulator article about magnetooptical. This electrically alterable magnetooptic device can be used as a twodimensional spatial light modulator in an optical image processor or a display system. Magneto optic current transformer, ask latest information, magneto optic current transformer abstract,magneto optic current transformer report,magneto optic current transformer presentation pdf,doc,ppt,magneto optic current transformer technology discussion,magneto optic current transformer paper presentation details,magneto optic current transformer, ppt, pdf, report, presentation, source. The magneto optic modulator according to claim 11, wherein said distributed constant line is a strip line, coplanar line, or coaxial line. Sep 08, 2012 issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. This chapter describes the basic principles of magneto. Magneto optical modulation technology has become key component in many optical information systems. This article presents the theoretical calculations of spatial distribution of the amplitude and phase characteristics of the stokes vector for a magnetooptical modulator based on the magneto.
A new optical modulator, based on magneto optic effect and spintronic technology, achieves optical modulation using pure spin current without net charge current. Magnetooptic modulator for high bandwidth cavity length stabilization. What is electrooptic modulator an electrooptic modulator eom is a. Low power field generation for magnetooptic fiberbased. However, due to the abstract theoretical knowledge, many textbooks do not introduce the properties of circular anisotropy, so it is difficult for most students to understand the polarization properties of light accurately and in depth. Theoretical simulation and preparation of magnetooptical. The research activities on the phenomenon of magnetooptic effects has recently promulgated due to its versatile use in magnetooptic recordings for high density magnetic data storage, magnetic field. We propose an ultrafast magneto optic mo modulator for the sfqtooptical digital interface. Advanced magnetooptic spatial light modulator device. The mpmeo are composed of paramagnetic garnet and electro optic films sandwiched between two bragg mirrors. In this section we experimentally demonstrate the proposed magneto optical infiber modulator. We have constructed a magnetooptic modulator using calcium vanadium garnet cavg.
Magnetooptic definition of magnetooptic by merriamwebster. Recent advances of wide band magnetooptical modulators. A thin magnetic garnet film is epitaxially deposited. A wideband yig modulator has recently been developed which represents a great improvement over other magneto optic modulators. The device further includes a magnetic material with low optical absorption through which a portion of the optical signal is configured to flow. Ultrafast broadband tunablebandwidth magnetooptic modulator. We report on microcavities comprising paramagnetic garnet and electro optic films mpmeo for modulation of the polarization rotation angle of light at nearuv wavelengths with a slight intensity change, with applying a low voltage. The magneto optic modulator according to 11, wherein a characteristic impedance of said distributed constant line is greater than or equal to 5 ohms and smaller than or equal to 45 ohms. Alloptical atomic magnetometers based on nonlinear magneto. Then the types of magneto optical effects are described, which include the varieties of the interactions of electromagnetic waves with magnetization or spins in solids.
Find out information about magnetooptical modulator. However, due to the abstract theoretical knowledge, many textbooks do not. We propose a device for the reversible and quiet conversion of microwave photons to optical sideband photons, that can reach 100%. Magnetooptical phase modulation in integrated machzehnder. Jul 01, 2009 optic modulator types electrooptic modulator acoustooptic modulator magnetooptic modulator 3. Pdf a magnetooptical spatial light modulator driven by spin. The magnetic material is configured to receive an electrical signal that sets a magnetization state of the magnetic material. Magneto optic definition is of, relating to, or utilizing the influence of a magnetic field upon light. A magnetooptic modulator with unit quantum effciency. Download the seminar report for magneto optic current transformer.
Electrooptic and magnetooptic modulators ntrs nasa. Acoustooptical effects principles and applications. Download the seminar report for magneto optic current. We propose a kind of magnetic photonic crystal mpc slab waveguide made from magneto optical material, namely bismuth iron garnet. Magnetooptical imaging of thin magnetic films using spins. Depending on the parameter of a light beam which is manipulated, modulators may be categorized into amplitude modulators, phase modulators, polarization modulators etc. Materials for magnetooptic modulators springerlink. Our mo modulator is based on the faraday effect and consists of a microwave microstrip line msl. Simulation of magnetooptical properties of magnetic. A thin magnetic garnet film is epitaxially deposited on a transparent nonmagnetic garnet substrate, in the manner of magnetic bubble memory films. Measurement of magneto optic kerr effect using piezobirefringent modulator j. Magneto optic current transformer technology moct doi. The magnetooptic modulator that can be used in this frequency band can overcome all of these deficiencies. If the modulator is not driven at or close to its resonant frequency, most of the rf drive power will be reflected, which could cause damage to the driver.
Acoustooptics is a phenomenon which deals with the interaction of light optics and sound acoustics. Magnetooptic modulator and optical communication system. What is electrooptic modulator an electrooptic modulator eom is a device which can be used for controlling the power, phase or polarization of a laser beam with an electrical control signal. Osa magnetooptic modulator for high bandwidth cavity. Read ultrafast broadband tunablebandwidth magneto optic modulator, proceedings of spie on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Magnetooptic definition is of, relating to, or utilizing the influence of a magnetic field upon light. Low power field generation for magneto optic fiberbased interferometric switches john pritchard,a mani mina, robert j. Nasa technical note electrooptic and magnetooptic modulators by e. Herein, we report an effective method for the generation of radiofrequency rf sidebands in an electrooptic modulator for the simultaneous magnetooptical trapping of two isotopes.
Nasa technical note electro optic and magneto optic modulators by e. Pdf magnetooptical modulator for superconducting digital output. A factor of 4 improvement in pixel switching sensitivity. Magnetooptic spatial light modulators with magnetophotonic. Design, fabrication, switching, and optical characteristics. Then the types of magnetooptical effects are described, which include the varieties of the interactions of electromagnetic waves with magnetization. A magneto optic effect is any one of a number of phenomena in which an electromagnetic wave propagates through a medium that has been altered by the presence of a quasistatic magnetic field. The optic and magneto optic effects of the magnetic liquids can be theoretically studied using a selfconsistent effective medium formalism, providing the nanoparticles are much smaller than the light wavelength. A significant advantage of this spin magneto optical modulator is its low energy consumption. The modulator achieved a depth of modulation over 50 percent for an rms modula. Imaging the fields of magnetic materials provides crucial insight into the physical and chemical processes surrounding magnetism and has been a key ingredient in the spectacular.
Magnetooptic infiber micro modulator sciencedirect. The intrinsic spinorbit coupling in the 2d staggered monolayer semiconductors is very large as compared to graphene. Keywordsmagnetooptic modulation, faraday rotation effect, linbo3, yig, and ultra fast magnetic field. Hirschmann godddrd space greenbelt, md flight center national aeronautics and space administration washington, d. The history of magneto optical effects is first introduced. Low power field generation for magnetooptic fiberbased interferometric switches john pritchard,a mani mina, robert j. Version download1667 stock0 total files1 file size461. Weber, and sasha kemmet electrical and computer engineering department, iowa state university, ames, iowa 50011, usa.
To prevent damaging the electrooptic crystal, do not exceed the modulators maximum rf drive power see table 1 on page 16 and table 2 on page 17 for maximum rf power. The microcavity states in mpmeo are split and yield. Moslm has been developed for miniature optical correlators and computers. Sensitivity and resolution are found to be 186 pmmt and 0. A wideband yig modulator has recently been developed.
An arrangement for modulating a beam of light by passing it through a single crystal of yttrium iron. Effective multiple sideband generation using an electro. Magnetooptical devices the optics encyclopedia castera. Magneto optical sensor has been designed using linbo3 nanomaterial.
Magnetooptic modulator and optical communication system using. We propose a device for the reversible and quiet conversion of microwave photons to optical sideband photons, that can reach 100% quantum effciency. The physical origin of the magneto optical effects is phenomenologically discussed. The magnetooptic modulator rotates a polarization of a light incident to a magnetooptic device which causes faraday effect under such a magnetic field arrangement that the rf magnetic. Osa paramagneto and electrooptic microcavities for blue. We report on microcavities comprising paramagnetic garnet and electrooptic films mpmeo for modulation of the polarization rotation angle of light at nearuv wavelengths with a slight intensity. Pdf we propose an ultrafast magnetooptic mo modulator for the sfqto optical digital interface. Ultrafast broadband tunablebandwidth magneto optic modulator proceedings of spie november 12 1999 subscribe to digital library. Magnetooptical modulation technology has become key component in many optical information systems. Lambeth advanced magnetooptic spatial light modulator device development, proc. An optical modulator is a device which is used to modulate a beam of light. The device further includes a magnetic material with low optical absorption through which a. Read ultrafast broadband tunablebandwidth magnetooptic modulator, proceedings of spie on deepdyve, the largest online rental service for scholarly research with thousands of academic.
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