Matches 1 - 50 out of 243 1 2 3 4 5 >
Match Document Document Title
7443598 Variable focal length lens  
A variable focal length lens ( 12 ) includes a central transparent elastic portion ( 120 ) having a first wall ( 1200 ) and a second wall ( 1202 ) intersecting an optical axis and a peripheral...
7433558 Methods for optical isolation in high power fiber-optic systems  
Methods for optical isolation in high peak power fiber-optic systems prevent damage to a facet within a fiber-optic isolator caused by back-reflected light from, for example, an optical amplifier....
7385393 Magnetic field measuring apparatus capable of measuring at high spatial resolution  
A condenser lens is incorporated into the end portion of a magnetic field measuring apparatus including a magneto-optical crystal. Alternatively, the end portion of the magnetic field measuring...
7365533 Magneto-optic remote sensor for angular rotation, linear displacements, and evaluation of surface deformations  
A system and method to detect angular rotation, linear displacement and/or surface deformations is presented. The method is based on the ability of a linear polarized light to interact with...
7308171 Method and apparatus for optical isolation in high power fiber-optic systems  
Methods and apparatus for optical isolation in high peak power fiber-optic systems prevent damage to a facet within a fiber-optic isolator caused by back-reflected light from, for example, an...
7295781 Polarization mode dispersion compensation  
Methods and systems for PMD compensation in an optical communication system are implemented by transmitting multiple optical signals through a common optical conduit to an optical compensator that...
7242516 Hard magnetic garnet material, faraday rotator, optical device, optical communication system, method of manufacturing faraday rotator and method of manufacturing bismuth-substituted rare earth iron garnet single crystal  
A hard magnetic Bi-substituted rare earth iron garnet material with excellent Faraday rotary moment, temperature property, wavelength property and insertion loss is provided. A Bi-substituted rare...
7224506 Single side band modulation device  
A single side band modulation device includes a first Mach Zehnder interferometer and a second Mach Zehnder interferometer. The first Mach Zehnder interferometer includes at least two output arms,...
7221247 Magnetically actuated microelectromechanical systems actuator  
A microelectrical mechanical system (MEMS) actuator having electrically conductive coils that create first magnetic fields that are opposed by a second magnetic field is disclosed. The actuator...
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...
7187496 Manufacturing method of optical device, optical device, manufacturing method of faraday rotator, and optical communication system  
There are provided a manufacturing method of an optical device excellent in expediency, and a technique for stably manufacturing a high performance optical device. After a single crystal film which...
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,...
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...
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...
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...
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...
7057792 Optical sensor unit for measuring current and voltage of high frequency  
An optical sensor unit, free from electrical noise, includes a sensor case which has both lateral sides having high frequency connectors mounted thereon, and a metallic plate mounted inside the...
7057791 Compact multipass optical isolator  
An optical isolator is disclosed for transmitting light in a first direction and blocking light in a second direction along an optical pathway. The optical isolator includes an input polarizer...
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...
7050216 Variable optical filter  
A variable optical filter comprises a first polarizer, a first phase difference element operable to generate a phase difference, a variable Faraday rotator operable to impart a variable Faraday...
7038834 Optical deflector and method of producing same  
There are provided a small optical deflector that can be driven at a high speed with a low voltage, provides a large angle of deflection, has a low distortion even in high speed operation and has a...
7027201 Optical modulation element and projection apparatus  
An optical modulation element is capable of forming a reflective diffraction grating in which heights of a plurality of elements each having a reflecting surface periodically change. The reflecting...
7027198 Generation and analysis of state of polarization using tunable optical polarization rotators  
This application describes optical monitoring devices and applications in optical systems for monitoring various optical parameters of light, including the signal to noise ratio, the degree of...
7016096 Transmission wavelength characteristics variable optical element, and wavelength characteristics variable apparatus, optical amplifier, and optical transmission system, using same  
An object of the invention is to easily realize an optical element using an etalon type structure, capable of changing a periodic transmission wavelength characteristic in an axial direction of...
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...
6985276 Magnetooptic element exploiting spin chirality  
A magnetooptic element whose size is essentially that of a lattice, namely several angstroms in size of magnetic material and which at the same time has its exhibiting magnetooptic effect...
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...
6947194 Method for compensating polarization mode dispersion, polarization mode dispersion compensator and optical fiber communication system  
An optical signal is introduced into a polarization rotator to control the optical signal so that the output of the optical signal is maximized through the rotation of a plane of polarization of...
6943932 Waveguide mach-zehnder optical isolator utilizing transverse magneto-optical phase shift  
A device and method for optical isolation for use in optical systems is disclosed. The device provides for a waveguide optical isolator fabricated using two arms, made of optical waveguides...
6934068 Magnetic field and electrical current visualization system  
Magnetic field and/or electrical current imaging systems utilizing magneto-optical indicator films (MOIF) based on magneto-optical material with in-plane single easy axis type of magnetic...
6919989 Integrated optical isolator and polarization beam combiner  
A device functions as a polarization beam combiner and an isolator. When light is transmitted in a first propagation direction, a second beam is displaced towards a first beam. The second beam has...
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...
6900925 Optical deflector and method of producing same  
There are provided a small optical deflector that can be driven at a high speed with a low voltage, provides a large angle of deflection, has a low distortion even in high speed operation and has a...
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...
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...
6867895 Faraday rotator  
A Faraday rotator which is improved in temperature-dependent Faraday rotation angle characteristic and thus in quality. Faraday rotation is caused by a first magnetic field applied to a...
6862126 TRANSMISSION WAVELENGTH CHARACTERISTICS VARIABLE OPTICAL ELEMENT, AND WAVELENGTH CHARACTERISTICS VARIABLE APPARATUS, OPTICAL AMPLIFIER, OPTICAL TRANSMISSION SYSTEM, AND CONTROL METHOD OF TRANSMISSION WAVELENGTH CHARACTERISTICS, USING SAME  
The present invention aims at providing a transmission wavelength characteristics variable optical element which can actively equalize changes of the wavelength characteristics due to temperature...
6859298 Optical module of optical isolator structure  
Disclosed is an optical module of an isolator structure including a semiconductor laser, a polarizer, and a Faraday rotator. The laser outputs a first linearly-polarized beam of a predetermined...
6853473 Faraday rotator and optical device comprising the same, and antireflection film and optical device comprising the same  
The invention relates to an optical device for polarizing light by changing its Faraday rotation angle, such as optical attenuators, optical switches or polarization controllers; and its object is...
6833941 Magneto-optic optical device  
To provide a magneto-optic optical device, such as a variable optical attenuator, an optical modulator or an optical switch, that is small, has a low power consumption and has high speed. The above...
6829076 Actuator apparatus  
An actuator apparatus, comprising a rotating shaft supported in a freely rotating condition, a rotor magnet consisting of a permanent magnet which is polarized at two poles and is fastened to the...
6816300 Optical apparatus  
An optical device includes a Faraday rotator made of a bismuth substituted rare earth iron garnet single crystal (BIG) having a Faraday rotation of 45 degrees, and permanent magnets arranged beside...
6813056 High amplitude fast optical modulator  
A short intense pulse of radiation is generated by shining radiation through a magneto-optical material and providing multiple stimulations to the material. The material is excited multiple times...
6788448 Spatial light modulator  
A spatial light modulator includes a device portion and a bias field applying coil disposed around the device portion. The device portion includes a magnetic layer and two types of conductor...
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...
6785037 Faraday rotator  
A Faraday rotator of multilayer film type is provided in which satisfactory optical characteristics are obtained with a small number of layers. In the Faraday rotator, a first periodic dielectric...
6775052 HARD MAGNETIC GARNET MATERIAL, FARADAY ROTATOR, OPTICAL DEVICE, OPTICAL COMMUNICATION SYSTEM, METHOD OF MANUFACTURING FARADAY ROTATOR AND METHOD OF MANUFACTURING BISMUTH-SUBSTITUTED RARE EARTH IRON GARNET SINGLE CRYSTAL  
A hard magnetic Bi-substituted rare earth iron garnet material with excellent Faraday rotary moment, temperature property, wavelength property and insertion loss is provided. A Bi-substituted rare...
6770223 Article comprising a faraday rotator that does not require a bias magnet  
Faraday rotator garnet thick films have improved specific Faraday rotations without requiring a bias magnet. Films of nominal composition Bi X (Eu Z Ho 1-Z ) 3-X Fe 5-Y Ga Y O 12 are grown lattice...
6757101 None-mechanical dual stage optical switches  
The present invention provides improved optical switches in which no mechanical movement is required to direct optical pathways between plural fiber ports. Advantageously, the inventive switches...
6757093 MEMS reflectors having tail portions that extend inside a recess and head portions that extend outside the recess and methods of forming same  
A MEMs structure can include a recess in a substrate, the recess having a side wall and a floor. A tail portion of a moveable reflector is on the substrate and extends beyond the side wall of the...
Matches 1 - 50 out of 243 1 2 3 4 5 >