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| Number | Title | Issue Date |
| 7978394 | Magnetic spin based photonic/plasmonic devices A photonic/plasmonic device is disclosed that uses a ferroelectric material and its magnetization state in order to affect the physical properties of electromagnetic waves. The magnetization state of the ferromagnetic material may either be zero or nonzero. When the... | 07/12/2011 |
| 7965436 | Micron-size optical faraday rotator In an embodiment, micron-size optical Faraday rotator includes a non-magnetic dielectric waveguide. The waveguide includes a plurality of perforations to form a photonic crystal. A magnetic cladding is disposed on at least one side of the waveguide. The Faraday rota... | 06/21/2011 |
| 7551343 | Magneto-optical device and manufacturing method thereof A magneto-optical device is provided with a non-magnetic substrate, a magneto-optical crystal embedded in recessed portions formed in the surface of the non-magnetic substrate at positions where pixels are to be located, and a partitioning wall monolithic with the n... | 06/23/2009 |
| 7505192 | Optical apparatus having a compound tri-state non-reciprocal rotator An optical apparatus and methods for operating on a polarization state of a light beam using a compound tri-state non-reciprocal rotator having two Faraday rotators. A first Faraday rotator rotates the polarization state into one of two partially rotated states at a... | 03/17/2009 |
| 7333261 | Magnetic garnet material, faraday rotator, optical device, bismuth-substituted rare earth-iron-garnet single-crystal film and method for producing the same crucible for producing the same A of producing a magnetic garnet material of which the light absorption characteristics worsen little even though it is produced through LPE. The crucible for LPE is formed of a material containing Au. The amount of Au to be taken in single crystal formed in an Au c... | 02/19/2008 |
| 7304915 | Actuator for optical disk system and apparatus for providing signal for driving the actuator An actuator of an optical disk system and an apparatus producing a signal for driving the actuator, the actuator including a light source, with which information is recorded on or reproduced from an optical disk surface. In the actuator, an inner focusing coil and a... | 12/04/2007 |
| 7230760 | Polarizers and isolators and methods of manufacture A passively aligned optical isolator includes laminated layers of material including two polarizing glass layers sandwiching a Faraday rotator layer. Each polarizing glass layer comprises a glass matrix containing elongated metal particles exhibiting a change in pol... | 06/12/2007 |
| 7204647 | Monitoring a semiconductor laser utilizing an incorporated beam splitter device A method and apparatus for monitoring of a semiconductor light source utilizing a beamsplitter within a photonic package is described, wherein the photonic package comprises a housing, a semiconductor light source disposed within the housing. The semiconductor light... | 04/17/2007 |
| 7206116 | Faraday rotator A Faraday rotator for a Faraday isolator with an input polarizer, with an output polarizer, with a roller-shaped optical crystal that is arranged therebetween and that is arranged symmetrical to its axis of symmetry, with a right hollow cylinder that surrounds this ... | 04/17/2007 |
| 7173762 | Optical isolator with reduced insertion loss and minimized polarization mode dispersion An isolator is disclosed that features a single birefringent correction element. The correction element is configured to eliminate differential group delay and walk-off simultaneously. ... | 02/06/2007 |
| 7170921 | Magneto-optic variable optical attenuator A magneto-optic variable optical attenuator is provided that is used to control the intensity of a light signal. The optical attenuator includes at least one polarizing element having an optical polarization axis, wherein the polarizing element transmits a portion o... | 01/30/2007 |
| 7167295 | Method and apparatus for polarizing electromagnetic radiation According to one aspect of the invention, a method and apparatus for polarizing electromagnetic radiation is provided. The electromagnetic radiation may be divided into first and second portions, substantially all of the first portion may be linearly polarized in a ... | 01/23/2007 |
| 7161452 | Magnet for a Faraday rotator Augmented magic sphere rotator permanent magnetic structures are provided by augmenting a magic sphere augmented with an interior magnet that attains significant decreases in mass, bulk and length of the optically active element. Also provided is a multiple augmente... | 01/09/2007 |
| 7156927 | Transition flow treatment process and apparatus A method is provided for treating an object. In this method, a treating chemical is introduced to a bath under conditions effective to at least partially envelop the object to be treated in eddy currents of the bath liquid, followed by introducing non-treating liqui... | 01/02/2007 |
| 7158301 | Method and device for modifying the polarization state of light A magnetic, single-axis crystal is used to modify the polarization state of light, whereby light passes through pre-determined areas of the crystal. To change the polarization state of the light, a magnetic field pulse is applied to the crystal with a magnetic field... | 01/02/2007 |
| 7133189 | Magnetic garnet material, faraday rotator, optical device, bismuth-substituted rare earth-iron-garnet single-crystal film and method for producing the same and crucible for producing the same Proposed is a technique of producing a magnetic garnet material of which the light absorption characteristics worsen little even though it is produced through LPE. The crucible for LPE is formed of a material containing Au. The amount of Au to be taken in single cry... | 11/07/2006 |
| 7126583 | Interactive vehicle display system An interactive display system for a vehicle including a heads up display system for projecting text and/or graphics into a field of view of a forward-facing occupant of the vehicle and an occupant-controllable device enabling the occupant to interact with the heads ... | 10/24/2006 |
| 7113339 | Interferometric modulator and display unit The interferometric modulator of the invention includes a transparent substrate (refractive index: n0) 12, an optical thin film (complex index of refraction: N1=n1−i·k1) 13 provided on the transparent subs... | 09/26/2006 |
| 7106512 | Wavelength selective switching device and method for selectively transmitting optical signals based on wavelength A wavelength selective switching device and method for selectively transmitting optical signals based on wavelength utilizes diffraction to spatially separate the optical signals of different wavelengths such that the optical signal of a selected wavelength can be s... | 09/12/2006 |
| 7106105 | High voltage integrated circuit driver with a high voltage PMOS bootstrap diode emulator A high voltage circuit driver includes high and low side driver cells to drive a high and a low side power MOSFET, a bootstrap circuit to energize the high side driver cell, a high voltage PMOS transistor (HVPMOS) between a voltage source and the bootstrap circuit, ... | 09/12/2006 |
| 7072113 | Wavelength selective switching device and method for selectively transmitting optical signals based on wavelength A wavelength selective switching device and method for selectively transmitting optical signals based on wavelength utilizes diffraction to spatially separate the optical signals of different wavelengths such that the optical signal of a selected wavelength can be s... | 07/04/2006 |
| 7072111 | Reflection-type optical device A reflection-type optical device used for an optical communication system, in which an element structure can be simplified and excellent optical characteristics are obtained. The reflection-type optical device includes a birefringent plate, a magnetic domain A of a ... | 07/04/2006 |
| 7071687 | Photomagnetic field sensor A photo magnetic field sensor includes a Faraday rotator made of a paramagnetic material, a polarizer, an analyzer, a light-irradiating element, and a light-sensing element. The Faraday rotator is made of a paramagnetic garnet single crystal including at least Tb an... | 07/04/2006 |
| 7068413 | Near-normal incidence quasi-optical reflective Faraday rotator for high power millimeter wave radars An optical element having characteristics suitable for use in a Faraday rotator has bonded to each of the adjacent radiation-receiving surfaces thereof with a chamber or water conducting conduit affixed therein includes a water cooled Faraday rotator element having:... | 06/27/2006 |
| 7050231 | Faraday rotator with metal reflection film A Faraday rotator of multilayer film type is provided which can achieve excellent optical characteristics with a reduced number of layers. In the Faraday rotator, a metal reflection film, a periodic dielectric multilayer film made of silicon dioxide SiO2 ... | 05/23/2006 |
| 7039274 | Light signal transmitting device and signal processing device In a device of the present invention for allowing signal light to enter a light guide body using an optical fiber, a light guide body, which is constituted by dispersing particles for scattering the signal light in an optical medium, is selected as a light guide pat... | 05/02/2006 |
| 7024073 | Reflective variable light attenuator A reflection-type variable optical attenuator comprises: a main attenuator unit including a first birefringent crystal plate, a Faraday rotational angle varying unit, and a second birefringent crystal plate arranged in this order; an input port and an output port th... | 04/04/2006 |
| 7023618 | Dual-stage optical isolator minimized polarization mode dispersion and simplified fabrication process An optical isolator includes a first stage configured to refract a light ray applied in a forward direction into a first ray and a second ray. A second stage rotated 90° with respect to the first is configured to refract said first and second rays in a substantiall... | 04/04/2006 |
| 7006289 | Magnetooptical isolator material An optical isolator is provided. The optical isolator includes a substrate and a thin film is formed comprising of iron oxide or magnetic persovskite-type material having a high Faraday rotation. ... | 02/28/2006 |
| 7006273 | Faraday rotation device and optical device using same Optical devices including a Faraday rotation devices improved in wavelength and temperature characteristics and an optical attenuator reduced in wavelength dependence and temperature-dependent loss. The Faraday rotation device has permanent magnets magnetized in an ... | 02/28/2006 |
| 7002732 | Magneto-optical devices The invention provides small-sized, power-saving and easily-producible magneto-optical devices. The magneto-optical device comprises a Faraday rotator having nearly parallel surfaces and a Z-direction magnetic easy axis; a total reflection film formed partly on one ... | 02/21/2006 |
| 7002742 | Polarizing function element, optical isolator, laser diode module and method of producing polarizing function element This invention has the polarizing function of polarizing an input beam and a non-reflecting function of suppressing reflection of the input beam, wherein at least one side of a light-transmissive substrate 1 has a polarizing portion 4 with a striped st... | 02/21/2006 |
| 6977763 | Free-space optical isolator with integrated quarter-wave plate The present invention provides low cost methods and apparatuses for filtering out polarized light reflections in a free-space optical isolator. In one embodiment, a laser directs a non-polarized optical signal through a series of polarizers and rotators in order to ... | 12/20/2005 |
| 6927909 | Integrated magneto-optical modulator with optical isolator, method of manufacturing the same and optical communication system using the same The integrated magneto-optical modulator with optical isolator of the present invention comprises an optical isolator unit, a magneto-optical modulator unit, an impedance adjuster. The optical isolator unit rotates a polarization of an incident light from a light so... | 08/09/2005 |
| 6906843 | Ferrule attachment type optical isolator, and manufacturing method thereof An optical isolator comprising a combination of an optical isolator main body and a holder holding the optical isolator main body, the optical isolator main body including a Faraday rotator element, a polarizer and an analyzer disposed at the front and back of the F... | 06/14/2005 |
| 6876481 | Spatial light modulator A spatial light modulator includes: a magnetic layer that is made of a magneto-optic material and includes a plurality of pixels in each of which a magnetization direction is independently set and each of which has a function of causing a rotation of a polarization ... | 04/05/2005 |
| 6876480 | Farady rotation device and optical device comprising it Optical devices including a Faraday rotation devices improved in wavelength and temperature characteristics and an optical attenuator reduced in wavelength dependence and temperature-dependent loss. The Faraday rotation device has permanent magnets magnetized in an ... | 04/05/2005 |
| 6813077 | Method for fabricating an integrated optical isolator and a novel wire grid structure A method for fabricating an integrated optical isolator includes depositing a wire grid material on a magneto-optical substrate and depositing a resist film on the wire grid material. The method further includes bringing a mold with a wire grid pattern on contact wi... | 11/02/2004 |
| 6813076 | Faraday rotator, optical isolator, polarizer, and diamond-like carbon thin film New material useful in miniature, low-cost Faraday rotators, polarizers (analyzers) and magnetic substances; in Faraday rotators and optical isolators that can handle a plurality of wavelengths; and in miniaturizing, and reducing the cost and enhancing the performan... | 11/02/2004 |
| 6806990 | Optical device and method for producing optical device There is provided A method for producing an optical device by bonding optical elements each other without using adhesive wherein the optical elements are bonded each other by using optical elements in which the relation between linear expansion coefficients α1 and ... | 10/19/2004 |
