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7315663 Electronically controlled photonic crystal optical switch  
Various embodiments of the present invention are directed to photonic crystal switches. In one embodiment, a photonic crystal switch a photonic crystal switch includes a photonic-crystal-based...
7315668 Optical coupling with a test port  
An optical coupler comprises a first, second, third, and fourth port. The first port is for communicating optical signals with a processor. The second port receives a first optical signal and...
7313295 Method and apparatus for variable optical attenuation for an optical switch  
A controller in an optical switch providing optical coupling of an optical signal between a source port and a target port employs, in at least one axis, gradient control using a feedback loop that...
7310461 Optical routing apparatus and method  
An apparatus and method for routing optical signals in which at least one demultiplexer receives and demultiplexes an incoming wavelength-division-multiplexed optical signal into n individual...
7308161 System and method for wavelength selective switching employing single-element gratings  
A wavelength selective switch device is disclosed that includes an elongated signal communication path extending from a first end of the device to a second end of the device. The signal...
7305160 Tunable wavelength optical transmission module  
Disclosed herein is a tunable wavelength optical transmission module, the wavelength of which can be tuned over the wide wavelength region of a C band and which can be implemented at a low price...
7302128 Fiber optic switch  
A fiber optic switch uses induced periodic variations in a multi-mode optic fiber, to control power loss in the switch and power output.
7302129 Optical transistor with sub-wavelength aperture  
An optical switch has a conductor and one or more sub-wavelength apertures. The switch is activated and periodic perturbations are dynamically formed in proximity to the conductor. Photons are...
7298538 Rotary optical switch  
An apparatus for directing a light path sequentially between multiple positions. A rotary switch rotates a light beam from a prism relative to a plurality of optical elements arranged radially on a...
7295726 Gimbal-less micro-electro-mechanical-system tip-tilt and tip-tilt-piston actuators and a method for forming the same  
Fully monolithic gimbal-less micro-electro-mechanical-system (MEMS) devices with large static optical beam deflection and fabrications methods are disclosed. The devices can achieve high speed of...
7292747 Strictly non-blocking switch core having optimized switching architecture based on reciprocity conditions  
A switch core is set forth that comprises a plurality of duplex switches that are interconnected with a interconnection fabric to implement, for example, strictly non-blocking operation of the...
7292741 Multi-input optical switch  
A multi-input optical switch can include a base plate that carries at least one photo sensor and multiple LEDs which are arranged at positions separated by approximately the same angular interval....
7292746 All-optical flip-flop  
The present invention provides a set-reset flip-flop operating in an all-optical manner. In this invention, a set pulse is inputted from the setting port. In doing so, only oscillation in set mode...
7289728 Use of variable ratio couplers for network protection and recovery  
The disclosure is directed toward an optical transmission system comprising a primary path disposed between a first end and a second end. The primary path is configured to transmit optical signals...
7289695 Optical switching device and optical member unit  
The present invention relates to an optical switching device capable of reducing the number of members such as a movable mirror for reflecting light beams to a relatively small number and...
7286730 Optical switch having angle tuning elements and multiple-fiber collimators  
An optical switch with a compact form factor includes a multiple-fiber collimator and an angle tuning element for deflecting an optical beam from an input fiber into one of at least two output...
7283698 Bending element light switch  
A BENDING ELEMENT LIGHT SWITCH will be used to turn on or off the light signal in one of two adjacent fiber optic channels by the action of the electric field of the light passing through the...
7283696 Microfluidic control for waveguide optical switches, variable attenuators, and other optical devices  
Devices utilize elements carried by a fluid in a microchannel to switch, attenuate, shutter, filter, or phase shift optical signals. In certain embodiments, a microchannel carries a gaseous or...
7280720 Apparatus, system and method for a tunable optical filter and channel dropping de-multiplexer  
A tunable optical filter comprises an optical switch having a single first optical port and a plurality of second optical ports; a plurality of band pass filters, each one of the band pass filters...
7273683 Fiber optic devices having volume bragg grating elements  
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...
7274843 Optical fiber including a diffuser portion and continuous sleeve for the transmission of light  
A novel optical fiber, and a method for its production, having a diffuser portion and continuous unitarily-constructed outer sleeve, which is adapted for the transmission of light to a treatment...
7274451 Optical beam translation device and method utilizing a pivoting optical fiber  
An alignment device and method for delivering a light beam to an optical application, such as an optical trap having a pair of lenses with overlapping focal regions for trapping a particle therein....
7272272 Optical deflector based on photonic bandgap structure  
An optical deflector comprises a photonic crystal section, a light lead-in means for leading in light having a specific wavelength to the photonic crystal section and an external force application...
7269305 Optical switch  
In order to provide a low-loss optical switch that is low in power consumption by providing the same as a self-holding type, and high speed and highly practicable, an optical switch of the present...
7266297 Optical cross-connect  
A bit-rate-transparent electrical space-division switching matrix is employed in an optical cross-connect and the input/output stage is constructed from simple, broadband optical receivers and...
7263250 Optical switch using polarization beam splitters  
A polarization based optical switch capable of redirecting light signals to a plurality of different output locations. The optical switch utilizes polarization beam splitters to separate each...
7263251 Optical switch having photonic crystal structure  
The present invention provides an optical switch having a photonic crystal structure. An optical switch of the invention has a slab optical waveguide structure whose core ( 35 ) has a...
7263254 Optical switch and control method therefor  
The present invention provides an optical switch for restricting a reduction in an optical coupling efficiency to an output optical path, which comprises a first spectral unit, a second spectral...
7257307 MEMS switch  
A MEMS (micro electro mechanical system) switch, which includes a substrate; a fixed electrode formed on an upper side of the substrate; a signal line formed on both sides of the fixed electrode; a...
7257284 Optical switching using light bullets  
A method and apparatus for optical switching using light bullets is presented. In one embodiment, the invention is a switch. The switch is a multi-channel, optical switch to use light bullets as...
7254287 Apparatus, method, and computer program product for transverse waveguided display system  
An apparatus and method for a switch for a radiation signal, the switch including a first waveguiding channel having a guiding region and one or more bounding regions coupled to the guiding region,...
7251395 Systems and methods for a continuously variable optical delay line  
The present invention provides systems and methods that employ a continuously variable optical delay line to introduce a delay into a transmitted optical signal. The delay line comprises a holey...
7251392 Reduction of driving voltage in a switchable element  
A switchable element is described, which comprises a fluid chamber ( 111 ) containing a polar ( 101 ) and a non-polar ( 102 ) liquid, which are immiscible. The element is further provided with two...
7248759 Optical signal switching apparatus, and controller and method for control of optical switch  
In controlling an optical switch that includes an incoming light deflection section to deflect incoming light from a predetermined input port in an arbitrary direction, and an outgoing light...
7248799 Method and an improved device for controlling the power delivered at the output of a node of an optical network that switches bands of wavelengths  
A device (D) is dedicated to controlling the power of optical signals in a transparent switching node of an optical communication network that switches bands of wavelengths. The device includes,...
7248758 Hitless tunable filter  
A method for implementing a truly hitless tunable filter for use in adding and/or dropping channels in a wavelength division multiplexed (WDM) network is disclosed. An exemplary method for...
7245798 Apparatus for redirecting optical signals in free space  
Apparatus for redirecting a plurality of optical beams emanating from a respective plurality of optical transmitters arranged in a pattern along a first dimension and a second dimension. The...
7242825 Cantilever beam MEMS variable optical attenuator  
An improved cantilever beam optical switch design which provides the function of a variable optical attenuator (VOA). A small degree of intentional misalignment of the waveguide will create...
7242827 Weak coupling bridge for optical fiber cores  
A bridge for weakly coupling optical cores in a multicore fiber. An inner cladding surrounds each of the cores. A plurality of bridges laterally connects each of the cores to adjacent cores. The...
7242860 Optical protection switching using 2 by 2 switching functions  
A network is protected against interruption of service while one or more faulty switches or optical fiber transmission lines are repaired or replaced, by an interconnecting configuration of small...
7242826 Optical fiber lateral scanner for a miniature optical fiber probe  
The present invention relates to an optical fiber magnetic scanning arrangement for a miniature optical fiber probe and can be applied for optical beam delivery in various optical imaging...
7239771 Method and system for controlling an optical switch using dynamic compensation  
A free space optical switch that uses both an open loop control mode and a closed loop control mode. The open loop control mode is used to transition to a state where at least some light is sensed...
7239769 Nanowire optoelectric switching device and method  
A nanowire switching device and method. The device has a nanowire structure comprising an elongated member having a cross-sectional area ranging from about 1 nanometers but less than about 500...
7239770 Optical device  
An optical device enabling reducing device scale is constituted by M circulators ( 11 a, 11 b ), (M being a natural number), a waveguide-type diffraction grating ( 12 ) including M first...
7239773 Optical-switch testing apparatus, optical-signal switching apparatus, optical-switch testing method, and control method for optical-signal switching  
A light source supplies optical signal to an optical switch and a detector detects light receiving level. A control unit changes a deflection control amount for changing an angle of a tilt mirror,...
7236657 Optical switch and optical add/drop multiplexer using the same  
An optical switch easy to adjust optical parts without using a catoptric system and an optical add/drop multiplexer using the optical switch are provided. Between an input light outputting...
7236660 Reconfigurable optical add-drop module, system and method  
An apparatus, system, and method for all-optical wavelength add-drop switching are provided. A number of optical ports, including at least one input port and at least one output port, are each...
7236658 Optical switch  
A first light reflection surface ( 51 ) and a second light reflection surface ( 52 ) are formed on a lower half of a mirror block ( 50 ) in a state that these light reflection surfaces ( 51 ), ( 52...
7233715 Optical switch and optical switch system  
A small-size thin-bodied 3-dimensional matrix switch using a micro mirror array, comprises a collimator array with a plurality of collimators coupled to optical fibers, a mirror array with a...
7230228 Tunable temporal dispersion and compensated angular dispersion in optical switching systems  
Methods for utilizing optical systems in order to introduce digitally tunable amounts of temporal dispersion into optical signals and methods and systems for providing angular dispersion...
Matches 151 - 200 out of 1710 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >