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7626754 |
Light steering using an array of tunable phase delay elements
An apparatus and method for steering a beam of light using an array of tunable optical phase delay elements is presented. The sidelobes of an angular spectrum of light reflected from the array are...
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7623744 |
Methods and apparatus to make substantially uniform losses in optical cross connects
A method for cross connecting optical signals includes using a common beam steerer to direct a set of optical signals from a set of input ports to a set of output ports. The method further includes...
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7616889 |
Byte-wide optical backplane switching method
A byte-wide optical switch and switching method are provided. The optical switch includes a first set of ports for receiving in parallel an optical byte of data, and multiple second sets of ports...
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7609931 |
Planar waveguide structure with tightly curved waveguides
Ridge and buried waveguide structures feature a plurality of trenches disposed proximate the waveguides in order to enhance confinement of an optical signal propagating within the waveguide are...
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7593607 |
Fast optical switch
A fast optical switch is needed to realize an economical and scaleable optical-core network. In the disclosed optical switch, switching is effected by rapid wavelength conversion. Either channel...
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7590316 |
Optical switch
An optical switch, comprises: a plurality of N input ports ( 2 ); a plurality of M output ports ( 24 ); and a plurality of displaceable beam steering arrangements ( 1 ) which, during switching,...
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7574080 |
Technique for photonic switching
A technique for photonic switching is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for photonic switching. The method may comprise receiving at least...
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7574078 |
Reconfigurable optical switch
An optical switch is provided which includes a plurality of input/output ports for receiving one or more wavelength component(s) of an optical signal. The optical switch also includes an optical...
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7574073 |
Optical devices with integral isolators
An isolator assembly, for use internally within a multi-port optical switch, and which operates on a preselected number of input port channels. The assembly incorporates a sequence of a...
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7561799 |
Optical path switching device
An optical path switching device includes compact and unpackaged components; the components are mounted onto a single platform; and the components are coupled by luminous flux. Connection between...
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7559703 |
Optical module and data communication system including the optical module
An optical module includes a fiber array, a laser diode array, a photodiode array and a micro-lens array. The fiber array includes optical fibers which are divided to a transmitter group and a...
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7548669 |
Optical gate array device
An optical gate array device which permits the use of an optical gate array with a pitch smaller than the diameter of optical fibers. The optical gate array has an array of optical gates, and an...
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7546005 |
Optical switch and path switching method
An optical switch not having waveguide crossings, as in a matrix switch, enabling input/output path switching of N×N, and not increasing the optical loss or the size when the number of channels...
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7539371 |
Optical apparatus with reduced effect of mirror edge diffraction
A micromirror for use in an optical apparatus may comprise a reflective portion, configured to be rotatable about a switching axis and an attenuation axis that is different from the switching axis....
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7536068 |
Micro movable element and optical switching device
A micro movable element includes a micro movable substrate, a package base and an electroconductive connector. The micro movable substrate is provided with a micro movable unit that includes a...
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7529454 |
Photonic crystal surface states
A photonic crystal may be configured to support a surface state for logic.
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7529442 |
Polarization-independent electro-optical (EO) switching
In one embodiment, an apparatus includes a passive element including one or more first waveguides and one or more second waveguides. The apparatus also includes an active element integrated into...
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7522789 |
Optical switches and actuators
An optical switch comprises one or more input ports for directing an optical beam into the switch; dispersive means configured to receive said optical beam and which spatially separate the optical...
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7505648 |
Device comprising a polarization-independent micro-resonator
Polarization-diverse optical devices and related methods are disclosed. In some embodiments, these devices and methods are realized by utilizing a four-port, wavelength-dependent optical coupler...
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7499609 |
Optical Switch
A blocking portion is provided at an end of the mirror to prevent a light beam emitted from an input port from being transmitted to or reflected by first and second output ports. The mirror is...
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7499608 |
Apparatus and method for optical switching with liquid crystals and birefringent wedges
An optical switch includes an optical waveguide to route an input optical beam. At least one polarization switch receives the input optical beam from the optical waveguide. At least one...
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7496267 |
Integrated optic devices and photosensitive sol-gel process for producing integrated optic devices
A photosensitive sol-gel film containing an organometallic photosensitizer is deposited on the oxide containing surface layer of a silicon substrate. A pattern of white or ultra violet light...
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7496252 |
Optical switch fabric with redundancy
An optical switch fabric with an input stage, an output stage, and a center stage coupled in a cascaded manner. The center stage includes (1) a minimum number of center switches greater than one...
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7486850 |
Optical switch system
An optical switch system has a plurality of micro mirrors arranged in a plane, and an angle of each of the micro mirrors can be controlled for reflecting an optical signal entered from one or more...
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7483602 |
Planar array optical switch and method
An optical switch device includes a first array ( 20 ) of reflectors ( 22 ), each associated with a separate optical fiber input ( 12 ), and a second array ( 30 ) of reflectors ( 32 ), each...
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7483601 |
Polarization maintaining optical device
A polarization maintaining optical device may include a polarization maintaining optical array. The device may also include a microlens array to receive light from the polarization maintaining...
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7477818 |
Bragg grating elements for optical devices
Fiber optic devices including volume Bragg grating (VBG) elements are disclosed. A fiber optic device may include one or more optical inputs, one or more VBG elements, and one or more optical...
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7477813 |
Multi-beam light source, method for manufacturing the same, light scanning unit using the same, and image forming apparatus using the same
The invention provides a multi-beam light source including a light guide array by which the yield can be improved. An array pitch P 2 of entrance surfaces of light guide pattern is 1/N as wide as...
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7469080 |
Modular all-optical cross-connect
An all-optical, optical cross-connect includes first and second pluralities of multiport optical devices. Each of the first plurality of multiport optical devices have at least one input port for...
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7466924 |
Reconfigurable data communications system with a removable optical backplane connector
The present invention is directed to a reconfigurable data communications system. The system includes a removable optical backplane connector with a first end and a second end, a first data...
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7466890 |
Cabinet access sensor
A cabinet tamper detection device is disclosed. The tamper detection device includes a first portion and a second portion. The first portion includes a housing and a first magnet movable relative...
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7463797 |
Wavelength multiplexed light source and wavelength multiplexed light source system
A wavelength multiplexed light source using multimode interference is provided. The light source includes an input unit for inputting a plurality of incident lights, input waveguides for...
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7462812 |
Optical switch apparatus and optical switching system
An optical switching system having a transmission node. The transmission node includes a bit pattern processing unit for processing a bit pattern of transmitted data to stabilize optical power of a...
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7457494 |
Dispersion compensator, optical transmission system and optical transmission method
A variable dispersion slope compensator with a high-accuracy and a low-cost structure for compensating the dispersion slope compensation error accompanying variations in the zero-dispersion...
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7454100 |
Single-pole optical wavelength selector
A fiber-optical, wavelength selective switch, especially for channel blocking applications. The input signal is converted to light beams having predefined polarizations relative to the plane in...
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7450796 |
Radiation switch
An apparatus and system includes a radiation generation device for generating radiation and a radiation detection device. A first radiation channel is optically-coupled on a first end to the...
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7450795 |
Signal interconnect incorporating multiple modular units
An interconnect element incorporates a plurality of smaller, substantially identical, interconnect modules. Multiple identical elements can in turn be combined to form larger interconnect networks....
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7447399 |
Optical switch, and apparatus and method for controlling optical switch
In an optical switch comprising a wavelength spatially dispersive optical element for spatially dispersing a wavelength-multiplexed beam according to wavelengths, a plurality of output ports and a...
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7447398 |
Optical crossconnect apparatus
In working path setting, a backup path is previously prepared assuming a link failure, and a demultiplexer of a bypass link is connected to a wavelength conversion repeater through an optical...
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7447397 |
Optical switch matrix
An optical switch matrix is described herein. In one embodiment, an exemplary optical switch matrix includes, but is not limited to, multiple input waveguides, multiple output waveguides, for each...
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7437032 |
Optical switch and method of controlling optical switch
An optical switch of the present invention includes at least one input optical fiber, output optical fibers, at least one movable mirror for directing a light beam from the input optical fiber...
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7430347 |
Methods, systems, and apparatuses for optically generating time delays in signals
Methods, systems, and apparatuses for producing time delays in optical signals are provided. The methods, systems, and apparatuses allow the time it takes for an individual light beam to travel an...
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7430346 |
Non-blocking cyclic AWG-based node architectures
An optical switching architecture utilizing a multiple stage configuration of wavelength division multiplexed (WDM) component wavelength converters and cyclic arrayed waveguide grating (AWG) router.
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7428353 |
MEMS device control with filtered voltage signal shaping
A MEMS system is disclosed. The system includes a MEMS device having including a gimbal-less device mount supported by two or more bi-axial linkages. Each bi-axial linkage is mechanically coupled...
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7426347 |
Shared optical performance monitoring
An apparatus for shared optical performance monitoring (OPM) is provided. A wavelength sensitive device receives light at an input port and routes it wavelength selectively to a set of output...
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7424181 |
Hitless switch for high-density integrated optics
An optical device includes a first and a second splitting device. Each of the first and second splitting devices have respective first and second input ports, respective first and second output...
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7421203 |
Method for transmitting packet in wireless access network based on wavelength identification code scheme
A method for transmitting a packet in a wireless access network based on a wavelength identification code scheme. The method comprises the steps of connecting n number of RNCs (Radio Network...
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7421168 |
Integrated optical channelizer
A signal channelizer ( 10 ) includes an input waveguide ( 14 ) carrying an inputted signal ( 20 ) having a plurality of wavelengths. The input waveguide ( 14 ) has an input port ( 22 ) for...
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7408639 |
Tunable optical routing systems
An optical spectral detection device utilizing free space optical beam propagation is provided. The device includes at least one optical fiber input, at least one opto-electronic detection device,...
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7403712 |
Matrix time division multiplex (MTDM) interrogation
Embodiments of present system encompass: a plurality of laser sources that produce a plurality of respectively different optical wavelengths; a matrix switch having a plurality of inputs...
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