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| Number | Title | Issue Date |
| 7826690 | Waveguide type optical isolator and magnet holder used in waveguide type optical isolator A waveguide type optical isolator comprises a substrate, a waveguiding layer provided with waveguides, a magnetic garnet, magnetic field applying means, and a package substrate, wherein a first magnet and a second magnet is provided as the magnetic field applying me... | 11/02/2010 |
| 7689068 | One-way waveguides using gyrotropic photonic crystals A waveguide structure is provided. The waveguide structure includes a photonic crystal structure comprising gyromagnetic materials arranged in a two-dimensional lattice formation that exhibits a plurality of one-way modes produced as a result of magneto-optic effect... | 03/30/2010 |
| 7444040 | Magneto-optical component The invention relates to a magneto-optical component, such as a variable light attenuator, light modulator or optical switch, having small size, low power consumption and high speed. The magneto-optical component comprises at least one Faraday rotator comprising a m... | 10/28/2008 |
| 7367691 | Omnidirectional one-dimensional photonic crystal and light emitting device made from the same A light emitting device includes a light-generating unit for generating a primary light in a first wavelength range, a wavelength-converting member connected to the light-generating unit for converting a portion of the primary light into a secondary light in a secon... | 05/06/2008 |
| 7259913 | Faraday rotator for high output lasers A Faraday rotator in which the isolation function based on a temperature rise is not deteriorated even when the Faraday rotator is used for a high output laser of not smaller than 1W output at a wavelength of not larger than 1.1 μm includes sapphire crystals or rut... | 08/21/2007 |
| 7254286 | Magneto-optical resonant waveguide sensors A waveguide magneto-optic sensor provides a signal indicative of the value and/or direction of a detected magnetic field by a spectral shift of the characteristic resonant spectral feature of the sensor is disclosed. The sensor does not suffer from vibrations, fiber... | 08/07/2007 |
| 7242821 | Enhanced performance mode converter An optical mode converter comprising a slow wave electrode structure and including Schottky barriers for preventing an accumulation of free carriers in the optical waveguide region of the converter. The Schottky barriers are also used for suppressing higher order mo... | 07/10/2007 |
| 7236668 | Spot-size transformer, method of producing spot-size transformer and waveguide-embedded optical circuit using spot-size transformer The present invention is to provide a spot-size transformer which can transform the beam spot-size in a waveguide separated by a groove and a waveguide-embedded optical circuit using the spot-size transformer. The spot-size transformer according to the present inven... | 06/26/2007 |
| 7224854 | System, method, and computer program product for structured waveguide including polarizer region An apparatus, method, computer program product, and propagated signal for a transport. The transport including: a waveguide including a guiding region and one or more bounding regions for enhancing containment of transmitted radiation within the guiding region, the ... | 05/29/2007 |
| 7221826 | Spot-size transformer, method of producing spot-size transformer and waveguide-embedded optical circuit using spot-size transformer The present invention is to provide a spot-size transformer which can transform the beam spot-size in a waveguide separated by a groove and a waveguide-embedded optical circuit using the spot-size transformer. The spot-size transformer according to the presen... | 05/22/2007 |
| 7183765 | Micro-position sensor using faraday effect A micro-position sensor and sensing system using the Faraday Effect. The sensor uses a permanent magnet to provide a magnetic field, and a magneto-optic material positioned in the magnetic field for rotating the plane of polarization of polarized light transmitted t... | 02/27/2007 |
| 7133582 | Fiber-optic filter with tunable grating A tunable optical fiber has a grating which is attached to an expander responsive to an external control including a temperature or a magnetic field. The expander changes length, and this is coupled to the optical fiber, which changes pitch, thereby accomplishing a ... | 11/07/2006 |
| 7133579 | High-speed magneto-optic modulator A magneto-optic modulator and method are provided. An optical waveguide having a magneto-optic active medium is magnetized by a biasing magnetic field. The magnetization of the magneto-optic active medium is modulated thereby causing a variation in the Faraday effec... | 11/07/2006 |
| 7130494 | Magnetically active semiconductor waveguides for optoelectronic integration A magneto-optical device includes a waveguide structure that has at least one cladding region and core region. The cladding region and core region comprise semiconductor alloy materials. Either the at least one cladding region or the core region is doped with ferrom... | 10/31/2006 |
| 7106918 | Structurally chiral materials exhibiting magneto-gyrotropy A structured material is disclosed with magneto-gyrotropic characteristics including at least one continuous structurally-chiral material. The structured material has an electric permittivity and a magnetic permeability at least one of which varies within the struct... | 09/12/2006 |
| 7068864 | Waveguide-embedded optical circuit and optical functional element used therein The present invention is to provide an arrayed waveguide-embedded optical circuit with reduced loss at a groove and an optical functional element using for the arrayed waveguide-embedded optical circuit. The arrayed waveguide-embedded optical circuit accordin... | 06/27/2006 |
| 7065264 | Optic system for light attenuation An optic system including an integrated variable optical attenuating device for attenuating an input optical signal, the integrated optical variable attenuating device including a first electrically controllable attenuating element and a second electrically controll... | 06/20/2006 |
| 7039266 | Nonmetallic input device for magnetic imaging and other magnetic field applications A device and method for collecting subject responses, particularly during magnetic imaging experiments and testing using a method such as functional MRI. The device comprises a non-metallic input device which is coupled via fiber optic cables to a computer or other ... | 05/02/2006 |
| 7020361 | Optical data transfer system with scattering centers A data transfer system for the optical transmission of data using an optical waveguide. The emitter and/or the receiver is adapted to be displaced along the optical waveguide or positioned at different sites. The optical data transfer system allows light to be coupl... | 03/28/2006 |
| 6999647 | Fast pivot mechanism A method and apparatuses are provided for switching an optical element into and out of an optical path. The apparatus comprises an arm assembly having an axis, first and second arms, first and second latch mechanisms, a stop element, and a solenoid. The first and se... | 02/14/2006 |
| 6983097 | Magneto-optical switching backplane for processor interconnection A system and method are disclosed for an optical backplane in an electronic processor that comprises of a plurality of processing units. The backplane is comprising of a network of optical waveguides which can guide polarized light. Furthermore, the backplane has ma... | 01/03/2006 |
| 6959124 | Liquid crystal-based electro-optical device forming, in particular, a switch The present invention provides an electro-optical device, characterized in that it comprises two plane optical substrates (100) each having at least one optical waveguide (110), and a nematic liquid crystal (200) inserted between them, in which ... | 10/25/2005 |
| 6952300 | Magneto-photonic crystal isolators A magneto-optical isolator (20) for an optical circuit. The isolator includes a substrate, and an optical channel (350) disposed next to the substrate. The optical channel and substrate are configured to transmit optical radiation within the optical ch... | 10/04/2005 |
| 6940637 | Multi-barrier photonic heterostructures An optical heterostructure is provided comprising a matrix and first and second bandgap regions defined in the matrix. The second bandgap region is characterized by a periodic arrangement of inclusions in the matrix. The inclusions have an index of refraction substa... | 09/06/2005 |
| 6924894 | Temperature compensated interferometer A system for controlling a relative length a first optical fiber and a second optical fiber includes a first heater coupled to the first optical fiber, a second heater coupled to the second optical fiber, and a controller coupled to the first heater and the second h... | 08/02/2005 |
| 6920161 | High-speed TO-can optoelectronic packages Various methods and apparatuses extend the useful operation speed of TO-can optoelectronic packages up to speeds of 10 Gbps and beyond. ... | 07/19/2005 |
| 6912080 | Magneto-optic modulator and optical communication system using the same The magneto-optic modulator rotates a polarization of a light incident to a magneto-optic device which causes Faraday effect under such a magnetic field arrangement that the RF magnetic field has a component perpendicular to a light propagation direction and the RF ... | 06/28/2005 |
| 6891982 | Optical modulation device having excellent electric characteristics by effectively restricting heat drift An optical waveguide for guided an incident light is formed on a substrate having an electro-optic effect. A first buffer layer is formed to cover an upper surface of the substrate. A conductive film is formed above the first buffer layer. A center electrode and a g... | 05/10/2005 |
| 6819833 | In-fiber continuously chirped gain flattening filters and method The present invention seeks to provide a GFF with a technique amenable to manufacturing in large volume and having a filter with a more precise control of the spectral response. ... | 11/16/2004 |
| 6819816 | Actuator, optical fiber moving apparatus, and optical switch A moving body (10) is composed of a main body (11), piezoelectric elements (13), (13′) secured to the sides of the main body in the traveling direction thereof, and coils (12), (12′) secured to the piezoelectric elements... | 11/16/2004 |
| 6819809 | Optical switch using micro-electromechanical system Provided is a 2×2 optical switch includes a substrate, a first input fiber and a first output fiber, a second input fiber and a second output fiber, a rotating mirror, torsion bars, and an electrostatic force generating part. The first input fiber and a first outpu... | 11/16/2004 |
| 6816637 | Magneto-optical switching backplane for processor interconnection A system and method are disclosed for an optical backplane in an electronic processor that comprises of a plurality of processing units. The backplane is comprising of a network of optical waveguides which can guide polarized light. Furthermore, the backplane has ma... | 11/09/2004 |
| 6792192 | Optical variable attenuator An optical variable attenuator is provided including polarizers for extracting a predetermined polarized wave component from an input optical signal, an array of Faraday rotators formed of a ferromagnetic material and arranged in series for rotating the plane of pol... | 09/14/2004 |
| 6785431 | Miniature circulator array devices and methods for making the same Miniature optical devices, including circulator array devices, are fabricated using thin film coating technology. A typical optical device according to the present invention includes a spatial walkoff plate (SWP) coupled on opposite ends to first and second polariza... | 08/31/2004 |
| 6757097 | Wavelength dependent isolator A wavelength dependent optical device comprising: at least two optical Ports (21, 22); a first series of polarisation modifying optical components (23, 25, 27, 28) placed between the two Ports and a first dielectric mirror (29); the first dielec... | 06/29/2004 |
| 6661935 | Optical signal processing apparatus and method An optical signal processing apparatus includes a YIG monocrystal serving as a magnetic body. A microstrip is provided on one main face of the YIG monocrystal, and microwaves are input to the microstrip. In order to input a laser beam into the YIG monocry... | 12/09/2003 |
| 6577779 | Ferrule connection type optical isolator with optical fiber A ferrule connection optical isolator with an optical fiber, wherein the optical isolator includes a ferrule with at least one processed end surface. The optical fiber consists of two kinds of materials and has a concentric level difference between the ma... | 06/10/2003 |
| 6560396 | Variable optical attenuator This invention is related to method for assembling an optical attenuator to attenuate an optical beam. The method includes a step of a) collimating the optical beam from an input optical waveguide into a substantially collimated beam comprising an upper s... | 05/06/2003 |
| 6556726 | Electric optical fiber grating filter with switchable central wavelength An electric optical fiber grating has a central wavelength. The central wavelength of an optical fiber grating can be adjusted under strain. The filter includes a bimetal plate, an elastic structure and an solenoid to achieve the goal of switching the cen... | 04/29/2003 |
| 6553161 | Magnetic fluid-based positioning apparatus and method An apparatus and method for controlling a coordinate position and/or orientation of a stylus. The apparatus functions by positioning an armature coupled to the stylus, which is disposed within a magnetic fluid. The magnetic fluid is contained within a cav... | 04/22/2003 |
