Matches 101 - 150 out of 1710 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
Match Document Document Title
7426346 System and method for preventing signal loss in an optical communications network  
A redundant optical signal transmission and reception system is disclosed to enable information exchange via an optical communications network without data loss in the event of optical transmitter...
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...
7423564 Optical signal processing device for A/D converter including optical encoders with nonlinear loop mirrors  
An optically sampling device optically samples an optical analog signal using a sampled signal having a predetermined sampling frequency, and outputs control light having a pulse train of an...
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...
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...
7418167 Optical switching using optical fiber connector  
An optical switching device, comprises an optical switch and an optical connector receiving means mateable with a connector., means for effectuating switching by engaging a connector in said...
7415174 Dual optical channel monitor assembly and associated methods of manufacture and use  
An optical channel monitor assembly for simultaneously measuring the optical power levels of multiple series of dense wavelength division multiplexed channels or the like traveling on separate...
7415173 Position sensor  
A hinge position sensor comprises first and second members connected together to provide a hinge, and an optical fiber or wave-guide connected between the first and second members to provide a...
7406246 Optical switch alignment mechanism  
An apparatus for aligning an optical element of an optical actuator. The optical actuator moves a guide between a retracted and an extended position relative to an actuator body. The actuator body...
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...
7394598 Electrowetting optical switch  
A switchable optical element having a first discrete state and a different, second discrete state. The element comprises a fluid system including a first fluid ( 44 ) and a different, second fluid...
7386201 Mems mirror array and controls  
A MEMS mirror array in which the MEMS mirrors are driven in two axes by vertical comb drive actuators. Tortional elements with conductive comb fingers are utilized to provide the two axis...
7382947 Remote monitoring of undersea cable systems  
A method and system are provided for remotely monitoring undersea cable systems. Upon receiving a fault alert message, an optical cross-connect is set up between the subject cable station and a...
7376300 Variable optical dispersion compensating module  
The present invention provides a variable optical dispersion compensating module comprised of (a) an optical dispersion compensating unit having an input optical switch, an optical dispersion...
7376296 Optical multiplexer  
The invention provides an optical multiplexing device comprising: a plurality of optical sources with integrated collimators ( 31 - 37 ) whose output beams are combined by mirrors ( 41 - 47 ) or...
7373036 Switching device and method  
A rocker styled switch includes an arm member moveable into and out of a beam path transmitting light between an optical transmitter and an optical receiver for blocking and allowing light to reach...
7373049 Optical deflection array  
An optical deflection matrix including at least two optical deflection modules each for providing, from an incoming beam having a given direction of propagation, an output beam having a direction...
7373053 Optical fiber array and manufacturing method thereof  
The present invention provides a high-density and high-precision optical fiber array which can stably be manufactured with excellent operability and which can maintain excellent characteristics...
7373037 Compact wavelength-selective optical crossconnect  
A system and method of optically routing wavelength channels from within a plurality of optical inputs to any of a plurality of optical outputs. An optical wavelength-selective cross connect (WSXC)...
7373035 Heat transfer structures  
A switching element includes a bubble chamber, a heater and a heat conductor. The bubble chamber holds fluid. The bubble chamber includes a trench within a planar light circuit and includes a...
7366413 Modular cross connect system with 3D-MEMS for optical telecommunication networks  
A modular cross connect system for optical telecommunication networks has the optical unit divided in at least two main bodies with one section for connection comprising the collimators and a main...
7366417 Delivering multicast services on a wavelength division multiplexed network using a configurable four-port wavelength selective crossbar switch  
A method and a system in which selected wavelengths of a wavelength division multiplexed (WDM) signal are modulated with multicast data for multicasting data services on an optical network. The WDM...
7362929 Optical switch  
An optical switch changes over transmission paths of an optical signal by a refractive index change. The optical switch has an optical waveguide layer having an optical waveguide whose output path...
7362925 Control method and control apparatus of optical device  
The present invention aims at providing a control method and a control apparatus for controlling the operation setting of an optical device with high accuracy, so as to reliably obtain...
7362926 Optical connector  
An optical connector includes: a board having a first signal-light propagation medium with a first optical signal end; and a chassis disposed on the board. The chassis includes: an...
7362928 Optical switch and gate apparatus and method  
Some exemplary embodiments of one version of the present invention provide an optical switch including: a splitting device having first, second, third and fourth terminals; a nonlinear element; an...
7359587 Photonic interconnections that include optical transmission paths for transmitting optical signals  
Various embodiments of the present invention are directed to photonic interconnection architectures that provide high-speed interconnections of microscale or nanoscale devices. In one embodiment of...
7356221 Coupled optical waveguide resonators with heaters for thermo-optic control of wavelength and compound filter shape  
An integrated optical device is disclosed comprising a substrate, optical waveguide, and compound optical resonator having a temperature sensor, at least two coupled optical resonators, and a...
7356259 Optical bypass upgrade configuration  
Optical bypass node upgrade configurations are disclosed: (1) a configuration where optical taps are pre-positioned in wavelength division multiplex (WDM) line systems terminating at...
7356216 Optical cross-connect  
An optical cross-connect is provided. The optical cross-connect includes a glass wedge, having a front end and a back end, positioned between a first one-dimensional collimator array and a second...
7356215 Methods and apparatus for selectively coupling optical paths  
An optical cross connect includes first and second planar layers having m and n optical path(s), respectively. An optical switch array comprising a plurality of optical switches is disposed to...
7352927 Optical add-drop multiplexer architecture with reduced effect of mirror edge diffraction  
Effects of diffraction of a spectral beam from an edge of the micromirrors are reduced in order to optimize the passband in a wavelength selective switch. The effects of diffraction on the pass...
7349594 Bidirectional wavelength cross connect architectures using wavelength routing elements  
Bidirectional wavelength cross connects include a plurality of ports, each configured to receive an input optical signals, each input optical signal having a plurality of spectral bands. At least...
7349628 MMI based device  
A device and method for multiplexing or demultiplexing M optical signals, each having a different wavelength λ m . An MMI waveguide has a length such that each optical signal that propagates into...
7346234 Reduction of MEMS mirror edge diffraction in a wavelength selective switch using servo-based multi-axes rotation  
Effects of diffraction of a spectral beam from an edge of the micromirrors are reduced in order to optimize the passband in a wavelength selective switch. The effects of diffraction on the pass...
7343064 Optical switch and optical add/drop multiplexer  
To provide a wavelength-selection optical switch able to select a light with a certain wavelength and an optical add/drop multiplexer using the same. An optical switch comprising: a silicon...
7343063 Light signal switching apparatus  
A light signal switching apparatus has an input port and output ports, and outputs an output light from a desired output port. The apparatus has a splitter polarizing an input light into first and...
7340175 Non-uniform optical waveband aggregator and deaggregator and hierarchical hybrid optical cross-connect system  
Hierarchical hybrid optical networking is based on balancing cost and performance of optical networks by providing transparent (optical) switching of subsets of wavelengths in addition to opaque...
7340123 Optical multiplexer and demultiplexer systems and methods using interference filters  
Multiple channel multiplexing and demultiplexing systems and methods are provided for use in optical communication systems. In one embodiment, an optical multiplexer/demultiplexer system comprises...
7340125 Optical switches and switching methods  
A device and method for collecting subject responses, particularly during magnetic imaging experiments and testing using a method such as functional MRI. The device comprises a non-metallic input...
7340124 Optical switch using rare earth doped glass  
The present invention provides an optical switch including a loss element having a signal loss, and a rare earth doped gain element optically connected in series with the loss element. The rare...
7336865 Optical switch  
An optical switch for switching the connection of one or more movable optical fibers to one or more stationary optical fibers, comprising a movable soft magnetic block connected to an end portion...
7333690 Evanescent waveguide couplers  
A multi-port planar evanescent coupler having N inputs and M outputs, where both N and M are each no less than three, formed of combinations of at least one of at least one planar evanescent 2×2...
7333687 Dual-filter architecture for reduced dispersion  
Chromatic dispersion of thin-film based mux/demux and add/drop modules can be reduced. Thin-film devices can be arranged in a specific order in the module. Multiple kinds of filters are used to...
7333685 Variable optical attenuator systems  
Low loss, reliable variable optical attenuators and 1×2 switches and polarization insensitive low loss, reliable variable optical attenuators and 1×2 optical switches are described. In one...
7330617 Wavelength selective optical switch, and optical device provided with spectroscopic function  
A wavelength selective optical switch of the present invention separates a WDM light emitted from an input port of an input and output optical system, according to wavelengths, by a diffraction...
7321704 Wavelength cross connect with per port performance characteristics  
A wavelength cross connect is provided in which there is a dispersive arrangement per port for each input port and each output port. Some of the dispersive arrangements have differing...
7321705 Method and device for optical switching and variable optical attenuation  
An optical switching device for switching M input signals into N output signals, wherein M and N are each equal to or greater than one, including a mode division multiplexer to join the M input...
7317850 Optical switch  
An optical switch includes an input optical fiber, an output optical fiber, a grating which performs spectral separation of an optical signal to a plurality of optical signals having different...
7315673 Optical multiplexer/demultiplexer and method of manufacturing the same  
An optical multiplexer/demultiplexer is provided, which is easy to assemble and which can be manufactured with high productivity and a low cost. An optical multiplexer/demultiplxer includes a...
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