Matches 101 - 150 out of 325 < 1 2 3 4 5 6 7 >
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6577430 Bi-directional optical switch  
The present invention provides improved optical switches in which no mechanical movement is required to direct optical pathways between plural fiber ports and light transmission is bi-directional....
6570711 Virtual waveplate and optical channel interleaver formed therewith  
A conventional interleaver, based on a stack of waveplates, relies on the orientation and the birefringence of the waveplates to differentiate the polarizations of one set of channels from another,...
6560014 Method and device for controlling the polarization of a beam of light  
An electrooptic waveplate for changing the state of polarization of light passing therethrough is disclosed. The waveplate provides a substantially constant birefringence when the principle...
6552836 High performance polarization controller and polarization sensor  
The invention is an instrument for sensing the state of polarization (SOP), and for transforming the SOP of a beam of light from an incident continuously-varying arbitrary SOP to a desired exit...
6542299 Material for bismuth substituted garnet thick film and a manufacturing method thereof  
A material for a bismuth substituted garnet thick film comprising Gd, Yb, Bi, Fe and Al as the main ingredient grown by a liquid phase growing method on a garnet substrate in which the composition...
6542298 Method for manufacturing a polarization beam splitter  
The invention provides a cutting step of a polarization beam separating material less susceptible to cutting position slipping. In particular, the present invention relates to a method for...
6538815 Bi-directional optical circulator and applications thereof  
A method and apparatus of bi-directional optical circulation are provided wherein, for a plurality of optical input/output ports including a certain logical sequence, light of a first set of lights...
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...
6529324 Optical component and method of manufacturing the same  
In a method of manufacturing an optical component, long-shaped members 2 e , 2 f each for a polarizer, 3 a for a Faraday rotator, 4 a for a compensator are fixed on the substrate 1 by an...
6528993 Magneto-optical microscope magnetometer  
A magneto-optical microscope magnetometer capable of simultaneously measuring a hysteresis loop and activation magnetic moment of a submicrometer-scale local area (about 0.3×0.3 μm). An...
6525848 Switchable interleaved optical channel separator and isolator device and optical systems utilizing same  
The present invention provides an improved switchable interleaved channel separator device. The switchable interleaved channel separator device utilizes a reflective interferometer and one...
6522467 Polarization insensitive liquid crystal tunable filter  
A method and system for filtering an optical signal is disclosed. The method and system comprise providing a polarization beam splitter, first and second rotators, a liquid crystal tunable filter,...
6493139 Optical switch  
The present invention relates to optical switches in which switching occurs by changing the rotation of the plane of polarization by application of an externally applied control signal,...
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 to...
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...
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...
6480636 Optical isolator comprising a faraday rotator  
An optical isolator comprises an optical element assembly ( 10 ) including a Faraday rotator ( 1 ) and a pair of polarizing elements ( 2 ) one of which is arranged on a light-input side of the...
6476966 Continuously variable, wavelength-independent polarization rotator  
A useful optical device to provide continuously variable rotation of polarization of linearly polarized light in a wavelength-independent manner. This device features a cell of twisted nematic...
6476967 Compact optical circulator with three ports  
The invention provides a compact optical circulator with three ports positioning between a dual-core collimator and a single-core collimator. The inventive circulator has a propagation director to...
6462539 Magnetic sensor with faraday element  
Light with a plane of polarization rotated during transmission is converted to parallel light by a collimating lens. The parallel light is transmitted through a first birefringent plate to be...
6462872 Optical isolator  
There is disclosed an optical isolator, wherein one surface of an optical element comprising at least one polarizer and at least one Faraday rotator is bonded and fixed to a substrate in which 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....
6445499 Optical circulators  
An optical circulator having a dual fiber collimator and a single fiber collimator is described. The circulator provides a non-reciprocal functionality that directs input signals from a first fiber...
6437904 Waveplate polarization rotator  
A system ( 10 ) for rotating a polarization state of a beam of electromagnetic energy ( 22 ) of the present invention. The system ( 10 ) includes a first mechanism ( 16 ) for receiving the beam of...
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 that...
6417952 Faraday rotation angle varying device  
There is provided a Faraday rotation angle varying device in which external magnetic fields are applied from at least two directions to a garnet single crystal having a Faraday effect and a...
6407861 Adjustable optical circulator  
Optical circulators can be formed with one or more adjustable components to facilitate the optimization of light coupling into the ports of the circulator. In particular, an optical circulator...
6402994 Thermally stable molecules with large dipole moments and polarizabilities and applications thereof  
Disclosed are fused ring bridge, ring-locked dyes that form thermally stable photorefractive compositions. The fused ring bridge structures are π-conjugated bonds in benzene-, naphthalene- or...
6404549 Optical circulator  
The invention provides an optical circulator that comprises three ports with the property that light entered through the nth port is output through the (n+1)th port. It can be applied to optical...
6404536 Polarization independent tunable acousto-optical filter and the method of the same  
The present invention pertains to a polarization independent tunable acousto-optical filter and the corresponding method. The filter diffracts an input light beam into a first input light beam...
6392784 Faraday rotator  
An object of the invention is to provide a small size Faraday rotator which is easy to produce and enables reliable reduction of temperature dependence of the Faraday rotation angle, by defining...
6377720 Inline optical circulators  
Inline optical circulators utilizing birefringent displacers to split an incoming beam into two orthogonally polarized beams and thereafter to recombine the beams. The birefringent displacers are...
6370286 Tunable periodic filter  
A polarization-interferometry based tunable periodic filter includes polarization defining components such as polarizing beam splitters or polarizing beam displacers located on the input and output...
6366402 Method and system for providing an in-line optical circulator  
A method and system for providing an optical circulator is disclosed. The optical circulator includes, a first port, a second port, a third port and means for establishing a first optical path and...
6366390 Pulse interleaver  
A pulse interleaver splits an input pulse train into at least two optical branches ( 20,22 ). A first one of the branches ( 20 ) carries a first signal, and is terminated with a mirror ( 24 ) and a...
6359722 Optical isolator with a compact dimension  
The present invention provides a compact optical isolator. A polarizer 2 A and/or an analyzer 2 B of an optical isolator 1 are/is formed of a cobalt magnetic substance minute particle cluster...
6333816 Apparatus capable of operating as interleaver/deinterleavers or filters  
An apparatus capable of operating as an interleaver, a deinterleaver, a filter, or some combination thereof is described. An optical device that can be configured to multiple different optical...
6331912 Optical circulator  
An improved optical circulator transfers light from a first optical port to a second optical port, and from the second port to a third port. The circulator has non-reciprocal polarization rotators,...
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...
6304380 Reducing polarization dependency of optical apparatus  
Polarization dependencies exhibited by components of optical apparatus, such as equalizers having chromatically variable transmissivity, are reduced by splitting the incoming light stream to be...
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 third...
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...
6289156 Low cost fiber optic circulator  
Improved optical devices, systems, and methods for selectively directing optical signals generally based on a Mach-Zehnder interferometer. Through accurate control of the phase relationship, the...
6288826 Multi-stage optical isolator  
This invention discloses to a multi-stage optical isolator having a large centrally disposed birefringent crystal and two smaller crystals sized to separate in a polarization dependent manner into...
6278547 Polarization insensitive faraday attenuator  
A polarization insensitive optical attenuator is disclosed. Three birefringent wedges are disposed along an optical path with their respective optical axes aligned. The apex angle of the second...
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...
6246807 Optical circulator  
An optical circulator has a single focusing element to couple light between the circulator components and two optical fibers. The optical elements The input face of the first birefringent element...
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.
6239900 Reflective fiber-optic isolator  
In a device having a fiber-optic cables, one that is normally an input and one that is normally an out output for light transmission through the device, a first polarization sensitive deflector...
Matches 101 - 150 out of 325 < 1 2 3 4 5 6 7 >