Matches 1 - 50 out of 65 1 2 >


Match Document Document Title
8493657 Light source switching device adapted for a projection system  
A light source switching device for use in a projection system is provided. The light source switching device comprises at least two light guiding devices and at least one phase switching device....
8440989 Method and system for a light source assembly supporting direct coupling to an integrated circuit  
Methods and systems for a light source assembly for coupling to a photonically enabled complementary metal-oxide semiconductor (CMOS) chip are disclosed. The light source assembly may comprise a...
7321463 In-line optical isolator  
In conventional optical isolators, an optical signal is dispersed by polarization or the characteristics are varied by heat generation in a garnet crystal. According to the invention, the crystal...
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...
7180051 Polarization state detecting system, light source, and exposure apparatus  
A polarization state detecting system includes a first dividing device for dividing incident light into two light beams having the same polarization state as that of the incident light, a detector...
7130121 Erbium-doped fiber amplifier and integrated module components  
An EDFA with integrated input and output modules is presented. The integrated input module has a packaged pump laser diode mounted to the metal EDFA package to provide a heat sink for the pump...
7102821 Apparatus and system for a re-configurable channel dropping de-multiplexer  
An improved apparatus and system for a re-configurable optical channel dropping de-multiplexer is herein disclosed. A re-configurable channel dropping de-multiplexer in accordance with the present...
7097315 Polarization conversion and recycling method and apparatus  
A method, apparatus and system for polarization conversion and recycling by using a half-pyramid shaped reflector with multiple reflective surfaces, or said reflector assembly, to obtain a...
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...
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...
7012739 Double-pass polarization-independent signal processor and on-axis processing method  
An apparatus includes a polarization beam splitter, at least two reflectors and first and second polarization rotation devices. The polarization beam splitter and the at least two reflectors are...
7009770 Multi-functional optical device utilizing multiple polarization beam splitters and non-linear interferometers  
The present invention provides a multi-functional separator which may be used as a demultiplexer or as a multiplexer in wavelength division multiplexed optical communication systems. The preferred...
6969177 Polarization recovery system using redirection  
A polarization recovery system includes a polarizing beam splitter transmitting light of a useful polarization in an output direction and reflecting light of a non-useful polarization in a first...
6954307 Four-port PM circulator  
A circulator includes a polarization beam splitter, a first reflector, a first non-reciprocal device, a second non-reciprocal device, and a second reflector. The first reflector is coupled with...
6853487 Multi-functional optical device utilizing multiple polarization beam splitters and non-linear interferometers  
An optical device includes: a first polarization beam splitter (PBS); a first set of optical rotators optically coupled to the first PBS; a second PBS optically coupled to the first set of optical...
6726328 Thin projector  
Projector is suggested, including a light source for emitting beams of lights, a rod lens for receiving the beams of lights from the light source for making a distribution of the beams uniform,...
6697198 Optical interleavers/deinterleavers  
Interleaver/deinterleaver apparatuses for combining/separating optical channels are described. When operating as a deinterleaver, the interleaver/deinterleaver separates an optical signal (e.g....
6678092 Reflection type faraday rotator with multiple reflection structure  
A reflection type Faraday rotator includes first to sixth reflection type sub-rotators. Light is made incident on the first to sixth sub-rotators while repeating reflecting thereat. A Faraday...
6678441 Multireflector fiber optic filter apparatus and method  
A multireflector fiber optic filter apparatus, wherein the transmittance and reflectance spectra are periodic in frequency, the apparatus comprising an etalon with N equally spaced reflectors...
6532316 Bi-directional polarization-independent optical isolator  
A bi-directional polarization independent optical isolator simultaneously transmits two separate signal rays in opposite forward directions and simultaneously suppresses backward transmission of...
6493141 Multi-functional optical device utilizing multiple polarization beam splitters and non-linear interferometers  
The present invention provides a multi-functional separator which may be used as a demultiplexer or as a multiplexer in wavelength division multiplexed optical communication systems. The preferred...
6487014 High isolation optical switch, isolator or circulator having thin film polarizing beam-splitters  
An optical device for controlling the flow of light between ports includes a pair of polarizing devices, which employ frustrated total internal reflection and interference in a thin film coating...
6480331 Reflection-type polarization-independent optical isolator, optical isolator/amplifier/monitor, and optical system  
A variety of polarization independent optical isolators, including a single stage polarization independent optical isolator, a single stage broadband polarization independent optical isolator, a...
6449091 Optical isolator  
Tuning to maximize the isolation provided by an optical isolator to one of a predetermined plurality of wavelengths is achieved by tilting the isolator with respect to an input beam of light....
6438278 Fiber optical circulator  
A fiber optical circulator in which is a light beam is fed from a fiber of a first port in a dual core glass capillary, then collimated before being passed to a birefringent crystal wherein the...
6421176 Optical isolator  
An optical isolator having a constitution in which a Faraday rotator is sandwiched by two polarizers, which can be more easily produced at a reduced cost. An optical isolator is constituted so...
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...
6301045 Three-port optical circulator  
A circulator (10) includes a first collimating device (12) and a second collimating device (16) with three external optic fibers (14), (18) & (20) thereon wherein the first fiber (18) and the...
6275336 Optical isolator  
Herein provided is an optical isolator which permits the reduction of the production cost and which is excellent in the thermal shock resistance.The optical isolator of the present invention is...
6252708 Temperature compensator for faraday rotator  
A micro-fabrication method of manufacturing optical assemblies and a temperature compensated optical isolator. The manufacturing method employs a lamination procedure to create an array of...
6246518 Reflection type optical isolator  
The isolator core having a walk-off crystal, a non-reciprocal rotator coupled to the walk-off crystal, and a reciprocal rotator coupled to the walk-off crystal.
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,...
6049425 Multiple-stage optical isolator  
The present multiple-stage optical isolator has low polarization-dependency and low polarization-mode dispersion but does not require a long time for the assembly. It is constructed of a first...
5872878 Partial optical circulators  
A partial optical coupler of the present invention comprises first, second and third walk-off devices having a non-reciprocal polarization interchanger unit positioned between the first and second...
5835270 Optical isolator device  
An optical isolator device is provided which is free from polarization dispersion. The optical isolator device presents an optical path which is equidistant for both an ordinary ray and an...
5768005 Multi-stage optical isolator  
This invention relates to a reflective optical isolating device having at least two stages. In one embodiment a polarization independent optical isolating device has an input/output end and a...
5715080 Compact uniform field Faraday isolator  
A compact Faraday rotator and isolator featuring a uniform magnetic field for isolating a light source from light which is directed back towards the light source. The isolator comprises a Faraday...
5689360 Polarization independent optical isolator  
A polarization independent optical isolator for transmitting a signal ray in a forward direction and suppressing backward transmission comprises: a first and second optical isolation unit for...
5581403 Beam shaping and beam splitting device and optical head comprising the same  
A beam shaping and beam splitting device for converting a cross sectional shape of a polarized parallel incident light beam into a light beam having a corrected cross sectional shape, emanating...
5574595 Optical isolator  
A polarization independent optical isolator for use in optical communication systems is provided. This optical isolator functions to provide dual-way optical isolation wherein an input optical...
5122905 Relective polymeric body  
A multilayered reflective body which is thermoformable and capable of being fabricated into relatively thick parts while maintaining a uniform reflective appearance is provided. The reflective...
5115340 High average power Faraday isolator  
A reflective Faraday isolator for handling high average powers. The Faraday isolator includes a Faraday medium, one or more magnets, and pole pieces to concentrate the magnetic field produced by...
5089786 Optical amplifier  
In an optical amplifier, light incident on a first port of a port separator is emitted out of a third port, and is input into and amplified in a semiconductor laser. Amplified light receives the...
5076675 Polarizing separating device and optical isolator employing the same  
A device which includes a polarizer wherein one of a pair of transmission faces of a transparent substrate by a light beam on which a polarizing separating film is not formed is formed in an...
4991938 Quasi-achromatic optical isolators and circulators using prisms with total internal fresnel reflection  
A quasi-achromatic configuration of two nonreciprocal optical rotators coupled by linear retardation elements based on total internal Fresnel reflection, such that wavelength or temperature...
4974944 Optical nonreciprocal device  
An optical non-reciprocal device is disclosed for passing light in the forward direction and for reducing light passing in the reverse direction. Three anisotropic crystal members are arranged in...
4909612 Optical isolator employing multipass faraday rotation  
An optical Faraday isolator includes a slab of Faraday rotator medium coated to define input and output faces and internal reflective surfaces for causing the beam to travel between the input and...
4863246 Optical system and components for optical disk reader  
A flat plate polarization separator assembly and a flat plate beam splitter and partial polarizer are disclosed, along with an optical system for an optical disk reader which utilizes these flat...
4844593 Optical feedback isolator  
Method and apparatus for isolating optical feedback in a laser interferometer having a laser light source from which a linear polarized outgoing laser beam of certain polarization orientation is...
4804256 Faraday rotators using a movable optical element  
A Faraday rotator comprising an optical element having an optical axis, a means for generating a magnetic field along the optical axis of the optical element in order to rotate a plane of...

Matches 1 - 50 out of 65 1 2 >