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6947627 |
Compact optical switches
Systems and methods to provide compact, scalable, low loss optical switches. An optical switch of this invention includes two or more directing elements, each directing element having two or more...
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6947623 |
Signals and methods for increasing reliability in optical network equipment
Methods, apparatus and systems for regenerating, monitoring and bridging optical signals through an optical cross-connect switch to provide increased reliability. A self testing method, apparatus...
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6947625 |
Optical deflector and optical switch
The optical deflector comprises: an optical waveguide 12 of a dielectric material having electrooptical effect; and a pair of electrodes 10, 14 opposed to each other across the optical...
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6947632 |
METHOD OF IMPLEMENTING THE KERR EFFECT IN AN INTEGRATED RING RESONATOR (THE KERR INTEGRATED OPTICAL RING FILTER) TO ACHIEVE ALL-OPTICAL WAVELENGTH SWITCHING, AS WELL AS ALL-OPTICAL TUNABLE FILTERING, ADD-AND -DROP MULTIPLEXING, SPACE SWITCHING AND OPTICAL INTENSITY MODULATION
The present invention relates to an integrated optical ring resonator waveguide surrounded by an upper bus and a lower bus waveguide. A first resonant and intense optical wave is coupled into the...
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6947624 |
MEMS optical latching switch
An optical micro-electro-mechanical system (MEMS) switch is disclosed. In a preferred embodiment the optical MEMS switch is used as an M×N optical signal switching system. The optical MEMS switch...
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6947204 |
Compact wavelength selective switching and/or routing system
Compact systems with reduced insertion loss, and increased switch isolation and switching speed. The switching and/or routing devices utilize a separating sub-system, a switching and/or routing...
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6944361 |
Electrically controllable integrated optical cross-connect
An integrated optical cross-connect device and associated methods are described, the cross-connect device comprising a plurality M of input waveguides formed in a first material layer of an...
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6944364 |
Method and apparatus for regenerating optical signals in an all-optical cross-connect switch
Methods, apparatus and systems for regenerating, monitoring and bridging optical signals through an optical cross-connect switch to provide increased reliability. A self testing method, apparatus...
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6944363 |
Miniature magneto-optic fiber optical switch
An optical switch uses a walk-off crystal together with a Wollaston prism, a Faraday rotator, and a halfwave plate pair and a single collimating lens of one multiple-fiber pigtail for both input...
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6944192 |
Planar laser
An optical device ( 10 ) includes a broad area laser ( 72 ) for lasing at a first wavelength ( 64 ), a multimode active-doped tapered waveguide laser ( 6 ); and a multimode passive planar mode...
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6941036 |
Microstructure relay switches
A micro relay switch ( 300 ) having a main body ( 13 ), a first electrical contact ( 302 ) positioned on a moveable relay switching element ( 17 ), and a second electrical contact positioned on the...
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6937804 |
Non-linear photonic switch and method of making the same
A photonic switch according to the present invention may be formed using one of a selected group of non-linear optical materials. Each of the materials within this group has a refractive index that...
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6937782 |
Polarization-stabilized all-optical switch
Described is an all-optical switch that is significantly insensitive to polarization instabilities. The optical switch can be configured as an ultrafast logic gate, a switch for ultrafast...
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6934436 |
Thermo-optical switch using coated microsphere resonators
An all-optical switch includes a microsphere optical resonator coated with a conjugated polymer. A signal light beam propagating along a first SPARROW waveguide defining a throughput channel is...
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6934438 |
Closed loop alignment system for fiber optic cross-connect switches
A closed loop alignment system for cross-connect switches in optical telecommunications systems. Arrays of small tiltable mirrors within the switch direct the signal beams between optical fiber...
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6934439 |
Piano MEMs micromirror
A micro-electro-mechanical (MEMs) mirror device for use in an optical switch is disclosed. A “piano”-style MEMs device includes an elongated platform pivotally mounted proximate the middle...
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6934440 |
Optical switch and optical switch device
An optical switch has at least first, second, and third optical fibers disposed generally parallel to each other and spaced at non-equal intervals in a direction substantially perpendicular to an...
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6934435 |
Microfluidic pump system for chemical or biological agents
In one form, one or more micropumps and optical micro-detectors are on a substrate, ideally many per square centimeter, each detecting fluid moved by its pump. A second form has many waveguides...
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6934432 |
Switch for the optical switching of a light path
A switch for the optical switching of a light path, particularly for switching the entering of light into a fiber-optical light guide is provided. The switch dial has at least one mirror surface...
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6934431 |
Variable optical delay lines and methods for making same
In accordance with the invention, a high-resolution variable optical delay line comprises an optical switch, such as an optical micromechanical mirror switch, and an array of delay fiber paths....
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6934437 |
Optically-controlled switch and optically-controlled optical switching method using dispersion curve shifting
Optical switches and optical switching methods are provided. One such optical switch includes a waveguide located in a substrate that is at least partially of a non-linear optical material, the...
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6934434 |
Circuit for switching optical paths
First to sixth optical switches 17 to 22 are provided: in event of failure on the part of a third input/output port 33 , only the first and second optical switches 17 and 18 turn ON; in...
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6931169 |
Optical switch with reversible electroplating mirrors
The present invention discloses an optical switching element that uses reversible electroplating mirrors includes a trench with transparent sidewalls located at the intersection of two waveguides A...
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6931172 |
Optical switch, optical add/drop apparatus, optical transmission system, and method of producing optical switch
An optical switch 1 has a plane waveguide 2 provided with optical waveguide 3 , and an actuator structure 5 including a beamlike member 6 supported in a doubly supported manner on the...
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6931171 |
Micromirror actuator and manufacturing method thereof
An actuator which can be actively driven so as to precisely control a driving angle of a micromirror, and a manufacturing method thereof are provided. The micromirror actuator includes a substrate,...
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6931168 |
Optical switch and optical switch module
An optical switch is arranged to have so simple a structure that the switch may be reduced in size. The optical switch includes an input waveguide for accepting an optical signal inputted from the...
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6931173 |
MEMS optical switches with guaranteed switching status
Techniques for controlling and monitoring MEMS optical switches are disclosed. In one embodiment, an electronic feedback loop is employed to determine a control signal to a MEMS switch actuator in...
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6928210 |
Apparatus for demultiplexing optical signals at a large number of wavelengths
An apparatus for demultiplexing optical signals at a large number of wavelengths using at least one wavelength-selective filter includes at least two wavelength-selective filters in each case for...
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6928207 |
Apparatus for selectively blocking WDM channels
An apparatus for selective blocking WDM channels comprises a light modulator, a diffraction grating, and a transform lens. The light modulator comprises an array of pixels. Each pixel of the light...
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6928209 |
Optical add and drop multiplexer using ring resonators
An optical add/drop multiplexer may be formed using ring resonators. In some embodiments, ring resonators may be used instead of Bragg gratings in a Mach-Zehnder interferometer configuration. One...
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6928206 |
Wavelength division multiplex optical switch
The invention provides an optical switch that consumes a less power, excels in a high-speed response, and possesses a structure suitable for a miniaturization and multi-channel switching. The...
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6925223 |
Pressure actuated optical latching relay
A pressure actuated optical relay containing a transparent mirror housing, located at the intersection of two optical paths. A liquid metal slug is moved within a channel passing through the...
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6925214 |
Connecting method of optical function devices, and optical apparatus
The present invention aims at providing a connecting method capable of suppressing an influence of stray light for a plurality of optical function devices formed on the same substrate, and an...
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6925217 |
Optical waveguide device, variable optical attenuator, and optical switch
An optical waveguide device used as, for example, a variable optical attenuator or an optical switch includes: a substrate; a Mach-Zehnder interferometer that is provided on the substrate and that...
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6925052 |
Multi-channel network monitoring apparatus, signal replicating device, and systems including such apparatus and devices, and enclosure for multi-processor equipment
A multi-channel network monitoring apparatus has input connectors for network signals to be monitored and four channel processors in a rack-mountable chassis/enclosure for receiving and processing...
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6925218 |
Control techniques and devices for an optical switch array
Techniques and systems for controlling an optical switch array based on local and global optical monitoring and feedback controls. Each optical switch element includes a local optical monitoring...
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6925224 |
Polysilicon optical router having rotor
An optical router comprises a substantially planar substrate, a stator fixed to and projecting from an upper surface of the substrate, and a rotor surrounding the stator so as to be rotatable about...
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6925219 |
Device for a passive optical network
Passive optical networks are generally built from a central office and a plurality of passive optical nodes. Over a main path, optical signals are transmitted to the nodes. When a fault, e.g. a...
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6920258 |
Optical switch
An optical switch ( 10 ) in accordance with the present invention includes a first PBS ( 101 ), a second PBS ( 104 ), two reflective elements ( 102, 105 ) and two liquid crystal elements ( 103, 106...
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6920259 |
Longitudinal electromagnetic latching optical relay
An electromagnetic optical relay is disclosed in which a solid slug moves within a switching channel formed in relay housing. An optical path passing through the switching channel is blocked or...
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6920260 |
Bistable molecular mechanical devices with a middle rotating segment activated by an electric field for electronic switching, gating, and memory applications
A molecular system is provided for electric field activated switches, such as a crossed-wire device or a pair of electrodes to which the molecular system is linked by linking moieties. The...
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6915046 |
Optical systems comprising curved MEMs mirrors and methods for making same
A MEMs mirror device comprises a mirror layer, a frame structure, and an actuator layer. At least one mirror is movably coupled to the frame. The actuator layer includes at least one conductive...
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6915031 |
Switch using electrooptic polarization splitter and combiner
An optical switch includes a polarization splitter/combiner that is made of a material that changes its refractive index in response to voltage. The polarization splitter divides an input beam into...
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6915061 |
Variable optical attenuator with MEMS devices
A variable optical attenuator includes a first lens, a MEMS device, a second lens, and a wedge. The first lens is configured to collimate an input light received on a first port and focus an output...
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6915038 |
Optical corner coupler system and method
An optical coupling system and method for transmitting optical signals around sharp bends or curves without the use of prisms, mirrors or other conventional reflecting elements. The coupling system...
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6912340 |
Optical ring interconnect
Optical interconnects and methods for wavelength management are provided to interconnect optical rings while overcoming color-blocking and allowing for wavelength re-use within optical rings. The...
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6911913 |
Piezo-resistive sensing of mirror position in an optical switch
An integrated piezo-resistive sensor for determining mirror position in an optical switch. One or more piezo-resistive layers may be formed in silicon springs supporting a movable mirror in the...
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6912338 |
Optical signal noise reduction device and method of reducing optical signal noise
An optical signal noise reduction device and method, where optical control signals are input into a first ring optical fiber, so that optical signals propagates clockwise and counter-clockwise in...
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6912336 |
Optical switch device
An optical switch device includes at least an optical switch element and driving control circuit. In the optical switch element, a fixed electrode portion is arranged, via a dielectric layer, on a...
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6912091 |
Method of designing collimator array device and collimator array device manufactured thereby
According to the present invention, there is provided a method of designing a collimator array device which enables reduction of the insertion loss because of the variation of the optical length....
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