Matches 101 - 150 out of 245 < 1 2 3 4 5 >


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6545795 Magneto-optical member and optical isolator using the same  
The present invention provides a magneto-optical member capable of ensuring an excellent light transmittance and an optical isolator using the same. A first one-dimensional magnetic photonic...
6542647 Optical signal transmission system and magneto-optical modulator designed to establish modulation over wide range for use in the same  
An optical signal transmission system equipped with a magneto-optical modulator is provided. The magneto-optical modulator works to modulate an optical beam emitted from a light source and...
6538799 Magnetically actuated torsional micro-mechanical mirror system  
A torsional micro-mechanical mirror system includes a mirror assembly rotatably supported by a torsional mirror support assembly for rotational movement over and within a cavity in a base. The...
6534977 Methods and apparatus for optically measuring polarization rotation of optical wavefronts using rare earth iron garnets  
Described are the design of a rare earth iron garnet sensor element, optical methods of interrogating the sensor element, methods of coupling the optical sensor element to a waveguide, and an...
6535318 Integrated optoelectronic devices having pop-up mirrors therein and methods of forming and operating same  
Integrated optoelectronic devices include a substrate having an opening therein that extends at least partially therethrough and a ledge extending inwardly from a sidewall of the opening. A pop-up...
6529309 Production method of light wavelength converting element  
A light wavelength converting element having a periodic polarization inversion structure is produced in the following manner: a comb-shaped electrode and a plate electrode are attached to both...
6515789 Compact optical assembly systems and devices for use in optical communication networks  
The present invention is directed to an optical assembly with a substrate. A non-latching optical component is attached to the substrate and includes a non-latching garnet and a permanent magnet...
6491842 Anticorrosive magnetic nanocolloids protected by precious metals  
The invention relates to new single- or multi-metallic magnetic colloid particles (for example, Fe, Co, Ni, Fe/Co) having a size of up to 20 nm, the surface of which is protected against corrosion...
6483645 Garnet crystal for Faraday rotator and optical isolator having the same  
An optical isolator comprsing at least two parts of a Faraday rotator obtained from a garnet crystal and an analyzer, which is small in size, can be mounted directly to a semiconductor laser. The...
6476956 Fast optical modulator  
A short pulse of radiation is generated by shining radiation through a magneto-optical material. The material is excited twice to rapidly change a property of the wave, such as the direction of...
6462856 Method and apparatus for modulating an optical signal using polarization  
A low-rate data transmission system and method are disclosed that use the Faraday effect to modulate the polarization state of light traveling in an optical fiber. The resulting change in...
6462857 Optical modulator and optical modulation method  
An optical modulator includes a magnetic ferrite single crystal, an optical source, a photoreceptor system and an analyzer. The magnetic ferrite single crystal has a transducer mounted and...
6441944 Optical attenuator using isolator and optical communications system including the same  
An optical attenuator using an isolator, and an optical communications system including the same, function to control the intensity of an input optical signal. The isolator comprises a Faraday...
6437885 Semiconductor sensor for optically measuring polarization rotation of optical wavefronts using rare earth iron garnets  
Described are the design of a rare earth iron garnet sensor element, optical methods of interrogating the sensor element, methods of coupling the optical sensor element to a waveguide, and an...
6433543 Smart fiber optic magnetometer  
A smart magnetometer which includes at least one cantilevered magnetostrictive/optical fiber structural bonded composite in a vibrationally isolated housing allowing an optical signal to be...
6429961 Methods for retrofitting windows with switchable and non-switchable window enhancements  
A method for retrofitting a window by combining the window with a switchable or non-switchable window enhancement. The method includes providing a window comprising at least one relatively...
6430323 Polarization maintaining optical isolators  
Optical isolators for use in fiber optic networks utilizing a birefringent wedge set with a Faraday rotator disposed between the birefringent wedges. In a first embodiment a polarization...
6404190 Optical magnetic field sensor probe  
An optical magnetic field sensor probe for detecting a magnetic field to be measured as an output light intensity, by disposing a polarizer, a magneto-optical device, and an analyzer mutually...
6384957 Variable optical attenuator utilizing Faraday effect  
The present invention aims at providing a variable optical attenuator to achieve the reduction of the wavelength-dependency of the entire device, by optimizing the magneto-optical system of the...
6370287 Compact fiber optical circulator  
This invention discloses an optical circulator. The optical circulator includes a first set of optical components having a birefringent crystal, a pair of half wave plates and the Faraday rotator...
6366075 Fiber optic, current measuring devices and method  
The present invention relates to a device for measuring a current in a magnetic field which includes a glass article wherein the glass may be an oxyfluoride glass or a bismuth oxide glass having a...
6351331 Faraday rotator and magneto-optical element using the same  
A Faraday rotator whose Faraday's rotational angle has low temperature-dependency; a method for efficiently preparing the same; a magneto-optical element which makes use of the Faraday rotator and...
6348165 Semiconductor magneto-optical material  
A semiconductor magneto-optical material includes a semiconductor dispersed with fine magnetic material particles and is characterized by exibiting magneto-optical optical effect at ordinary room...
6345142 Optical attenuation device having different type magneto-optical optical attenuation elements cascaded together  
An optical attenuation device to attenuate the intensity of incident light, comprising an optical attenuation unit including at least two different type magneto-optical optical attenuation...
6333809 Magneto-optical element  
A magneto-optical device using a rare earth iron garnet material, wherein the rare earth garnet material is expressed in the following formula: (Bix Gdy Rz Y3-x-y-z)(Fe5-w Gaw)O12,wherein x is...
6317250 Optical isolator using multiple core fibers  
A method and apparatus for optically isolating multiple core optical fibers while at the same time substantially reducing polarization mode dispersion, is disclosed. A multiple core fiber is...
6313937 Electrically actuated magnetic micro-shutters  
A spatial light modulation device is formed by creating forming an electromagnetic field within a substrate with at least one movable element, fixedly attached to the substrate at a first end,...
6309557 Magnetic garnet material and faraday rotator using the same  
An object is to provide a magnetic garnet material, even if a thickness of an element is made thin, in which a sufficient Faraday rotation capacity can be obtained, a magnetic field for saturation...
6295156 Methods for making integrated micro-optical systems  
An integrated micro-optical system includes at least two wafers with at least two optical elements provided on respective surfaces of the at least two wafers. An active element having a...
6288827 Faraday rotator  
Disclosed is a Faraday rotator capable of reducing the temperature dependence on a Faraday rotation angle, thereby enhancing the temperature characteristic, particularly, in a service environment...
6275323 Optical attenuator  
A specific polarized light component out of a light wave passed through a magneto-optic crystal (for example YIG) is extracted by a polarizer. The intensity of the light beam output from the...
6243193 Magneto-optical light modulator  
A magneto-optical light modulator includes a first polarizer, a transparent magneto-optical component including a magneto-optical film deposited on a surface of a substrate, and a second...
6226115 Optical circulator or switch having a birefringent wedge positioned between faraday rotators  
An optical device, such an as optical circulator or switch, which includes a birefringent tapered element, such as a birefringent wedge, positioned between first and second Faraday rotators. Light...
6141140 Optical modulator using isolator and optical transmitter including the same  
An optical modulator using an isolator, and an optical transmitter including the same are provided. The optical modulator modulates a carrier wave generated by an optical source according to a...
6141139 Method of making a bistable micromagnetic light modulator  
A method of fabricating a modulator for modulating an incident beam of light includes a substrate having a cavity formed therein and a plurality of spaced-apart deformable elements formed in the...
6120917 Hybrid magnetic substrate and method for producing the same  
According to the present invention, a hybrid magnetic substrate is provided, which includes: a magnetic substrate; and a holding substrate directly bonded to the magnetic substrate through at...
6094293 Optical switching apparatus for use in an optical communication system  
An optical switch includes a light emitter for emitting light and light receivers. A reflector is used for changing a path of light emitted from the light emitter. The reflector is held by a...
6088148 Micromagnetic light modulator  
A modulator for modulating an incident beam of light uses a substantially planar light reflection surface formed by a light reflection layer associated with a plurality of deformable elements and...
6064522 Miniature mass producible non-reciprocal devices  
An n by m array of lenses layer where n is greater than 1 and m is greater than 1 is disposed on a combination of layers comprised of a first walk-off layer, a first non-reciprocal rotator layer,...
6049412 Reflective Faraday-based optical devices including an optical monitoring tap  
A reflective Faraday-based optical system is formed to include a partially transmissive optical reflector so that a portion of the optical signal propagating through the system will not be...
6034522 Fibre optic transducer incorporating an extraneous factor compensation referencing system  
The fiber optic transducer may take the form of a current sensor, and includes a first light path which is defined by a light transmitting element (19) and a second light path which is defined by...
6031652 Bistable light modulator  
A modulator for modulating an incident beam of light includes a substrate having a cavity formed therein and a plurality of spaced-apart deformable elements formed in the cavity. The deformable...
6031654 Low magnet-saturation bismuth-substituted rare-earth iron garnet single crystal film  
A low magnetic saturation type bismuth-substituted rare-earth iron garnet crystal film of the invention is grown on a substrate of (111) garnet single crystal (GdCa)3(GaMgZr)5O12 by using a liquid...
6018411 Optical device utilizing magneto-optical effect  
The present invention provides an optical device making use of a magneto-optical effect. The optical device comprises: a reflector for reflecting an input beam as a reflected beam; a...
5999305 Optical device which makes use of magneto-optical effect  
An optical device which can be used as a Faraday rotator which can provide an arbitrary Faraday rotation angle in accordance with a positional condition. The optical device includes first and...
5985472 Magnetostatic wave device  
There is provided a magnetostatic wave device which operates even with a substitution R, A:YIG having a small film thickness and which has a wider operational frequency band. A magnetostatic wave...
5969849 Optical device of enhanced optical isolation at various wavelengths  
An optical isolator comprises two polarizers arranged before and after an optical rotator and a magnet surrounds the optical rotator. The magnet may generate a magnet field with a direction in...
5948321 Magnetic fluid thin film displays, monochromatic light switch and tunable wavelength filter  
Methods for preparing homogeneous magnetic fluid compositions capable of forming ordered one dimensional structures or two dimensional lattices in response to externally applied magnetic fields...
5946127 Image pickup apparatus capable of automatically tracking object  
An image pickup apparatus includes an image pickup unit in the form of a hollow ball having an image sensor inside thereof and a lens for focusing an optical image onto the image sensor, a first...
5943156 Polarizing plate and method of manufacturing polarizing plate  
A polarizing plate includes a polarizing layer for controlling a light and producing a polarized light, the polarizing layer having a particle dispersing medium with a property of light...

Matches 101 - 150 out of 245 < 1 2 3 4 5 >