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| Number | Title | Issue Date |
| 8111439 | Optical switch and optical switch device having the same Provided is an optical switch member including a bi-stable mechanism, and first and second electro-thermal actuators. The bi-stable mechanism includes a curved-beam disposed on a bending portion of a first cantilever, one end of the first cantilever having a driven ... | 02/07/2012 |
| 8103138 | Tunable filter A tunable filter is provided. The tunable filter comprises an input optical fiber for launching an optical signal into the tunable filter; a collimator disposed for collimating light transmitted from the input optical fiber; a grating disposed for dispersing the col... | 01/24/2012 |
| 8094979 | Polarization-based optical switching An optical switch, comprising a plurality of light inputs and a plurality of light outputs. The switch additionally includes a polarization beam splitter, configured to split light beams received through the input carriers into separate first and second polarization... | 01/10/2012 |
| 8094980 | Proof-mass with supporting structure on integrated circuit-MEMS platform and method of fabricating the same Provided is a micro-electromechanical-system (MEMS) device including a substrate; at least one semiconductor layer provided on the substrate; a circuit region including at least one chip containing drive/sense circuitry, the circuit region provided on the at least o... | 01/10/2012 |
| 8090229 | Method and device for providing electronic circuitry on a backplate A MEMS-based display device is described, wherein an array of interferometric modulators are configured to reflect light through a transparent substrate. The transparent substrate is sealed to a backplate and the backplate may contain electronic circuitry fabricated... | 01/03/2012 |
| 8086080 | Multiple function digital optical switch A multiwavelength switch is provided. The switch includes at least one optical input for receiving an optical beam and at least two optical outputs. A dispersion element receives the optical beam from the optical input and spatially separates the optical beam into a... | 12/27/2011 |
| 8078019 | Optical wavelength selective router A fiber-optical, wavelength selective switch, especially for channel routing with equalization and blocking applications. The input signals are converted to light beams having predefined polarizations (41). The beams are then laterally expanded (43), a... | 12/13/2011 |
| 8000568 | Beam steering element and associated methods for mixed manifold fiberoptic switches An optical comprising two or more mixed optical switches co-packaged together comprising discrete sets of fiber ports, each configured as N×1 optical switch or 1×N optical switch, wherein λn from said input fiber ports is focused on λn mirror via the use of shar... | 08/16/2011 |
| 7995881 | Opto-electric hybrid module and manufacturing method thereof An opto-electric hybrid module capable of reducing the propagation loss of light beams, and a manufacturing method thereof. An opto-electric hybrid module in which a light-emitting element and a light-receiving element are mounted on the front surface side of an ele... | 08/09/2011 |
| 7965910 | Beam combination using interleaved optical plates In a system and method, the emitted beams of multiple diode bar array assemblies are combined to achieve an increase in the resulting power density in the combined output beam, while addressing the need for heat distribution in each of the individual assemblies. The... | 06/21/2011 |
| 7961993 | Optical switch and control method of optical switch, and control method of MEMS device A control section of an optical switch calculates information relating to a polarization amount in an insulating film at each predetermined time, to update the information relating to the polarization amount in the insulating film. On the other hand, when a drive vo... | 06/14/2011 |
| 7953306 | Beam steering element with built-in detector and system for use thereof An all-optical cross-connect switching system provides optical switching that may reduce processing requirements by three orders of magnitude over conventional techniques by associating at least one optical detector with an optical beam steering element. In one embo... | 05/31/2011 |
| 7945129 | Hybrid optical switch apparatus The invention relates to a hybrid optical switch, which is composed of a silicon micro-mirror-array and a mini-actuator array mainly. The invention which combines microelectromechanical systems technology and traditional precision machining technology, possesses the... | 05/17/2011 |
| 7933476 | Method and device for providing electronic circuitry on a backplate A MEMS-based display device is described, wherein an array of interferometric modulators are configured to reflect light through a transparent substrate. The transparent substrate is sealed to a backplate and the backplate may contain electronic circuitry fabricated... | 04/26/2011 |
| 7912329 | 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, and outputs the deflection control amount to a driving unit. When an ... | 03/22/2011 |
| 7889957 | Optical selector switch and signal-processing apparatus An optical selector switch contains an optical waveguide that includes a first optical waveguide portion having a first light-transmissivity, a second optical waveguide portion having a second light-transmissivity, reflecting members that reflect light, and a light-... | 02/15/2011 |
| RE42124 | Fault-tolerant fiber-optical beam control modules Fiber-optic beam routing and amplitude control modules based on a unique fault-tolerant scheme using a macro-pixel to control an optical beam are proposed. The unique macro-pixel method involving multiple device pixels per beam inherently provides a robust digital t... | 02/08/2011 |
| 7873246 | Beam steering element and associated methods for manifold fiberoptic switches and monitoring An optical system comprising a combination optical switch and monitoring system based on an array of mirrors, and a moveable reflective element co-packaged together, including discrete sets of fiber ports wherein λn from input fiber ports is focused on λn mirror v... | 01/18/2011 |
| 7826697 | System and method for asymmetrical fiber spacing for wavelength selective switches A system and method of asymmetrical fiber or waveguide spacing comprising, in general, an asymmetrical fiber concentrator array (FCA), wherein an offset in the front face spacing of the output waveguides relative to the input waveguides functions to reduce or elimin... | 11/02/2010 |
| 7822303 | Optical wavelength selective router A fiber-optical, wavelength selective switch, especially for channel routing with equalization and blocking applications. The input signals are converted to light beams having predefined polarizations (41). The beams are then laterally expanded (43), a... | 10/26/2010 |
| 7792399 | Optical device The present invention seeks to realize an optical device that is capable of preventing stray light from entering light input and output means such as optical fibers and that excels in return loss characteristics. The optical device has a free space at least having a... | 09/07/2010 |
| 7787721 | Mirror, mirror unit, and optical switch The MEMS mirror, which has a reflective surface whose angle is variably changed, is provided with a portion whose reflectance is lowered than that of a center portion. The portion is provided in at least part of ends on a predetermined side of the MEMS mirror. As a ... | 08/31/2010 |
| 7769255 | High port count instantiated wavelength selective switch A high port count instantiated wavelength selective switch comprising two or more discrete sets, or instances, of m fiber ports totaling N fiber ports co-packaged together, one or more shared optical elements and dispersive elements, and one or more steering element... | 08/03/2010 |
| 7756368 | Flex spectrum WSS Switching optical signals containing a plurality of spectral channels characterized by a predetermined channel spacing is described. A selected beam deflector array may be selected from among a plurality of available beam deflector arrays configured to accommodate s... | 07/13/2010 |
| 7734128 | Optical component, fiber collimator array and wavelength selective switch The invention provides a fiber collimator array including a fiber array in which a plurality of optical fibers is arrayed and a microlens array in which microlenses are arrayed on positions corresponding to the plurality of optical fibers on a transparent substrate.... | 06/08/2010 |
| 7720329 | Segmented prism element and associated methods for manifold fiberoptic switches A fiber optic switch utilizing a segmented prism element, comprising a fiber optic switch used in multi-channel optical communications networks and having one or more arrays of micro electromechanical system (MEMS) mirrors, wherein at least a first array of MEMS mir... | 05/18/2010 |
| 7702194 | Beam steering element and associated methods for manifold fiberoptic switches An optical system comprising two or more optical switches co-packaged together comprising discrete sets of input fiber ports (N per set) and an output fiber port (1 per set), wherein λn from said set of multiple input fiber ports (N) is focused on λn mirrors via t... | 04/20/2010 |
| 7676125 | Method and apparatus to provide multi-channel bulk fiber optical power detection An apparatus is described to provide multi-channel bulk optical power detection. The apparatus has a plurality of optical splitters coupled to respective fiber-optic lines of a plurality of fiber-optic lines. An optimal time-division multiplexer has an input coupled... | 03/09/2010 |
| 7676126 | Optical device with non-equally spaced output ports The invention relates to multiport routing devices for routing optical signals which also provide beam attenuation by imparting a controllable offset between an optical beam and a selected optical port. A multiport optical routing device of the present invention has... | 03/09/2010 |
| 7664348 | Optical switch with reconfigurable broadcasting and combining capabilities An optical switch provides the ability to broadcast one input signal to multiple output channels and to combine multiple input signals into single output channel. The signal broadcast pattern is reconfigurable. One or more diffractive optical elements are used in th... | 02/16/2010 |
| 7664349 | Beam steering element with built-in detector and system for use thereof An all-optical cross-connect switching system provides optical switching that may reduce processing requirements by three orders of magnitude over conventional techniques by associating at least one optical detector with an optical beam steering element. In one embo... | 02/16/2010 |
| 7653273 | Optical switch The optical switch includes: a spectroscopic device which separates wavelength division multiplexed (WDM) light into its component wavelengths; and a plurality of movable reflectors, arranged in a spectral direction at different intervals, for reflecting light of an... | 01/26/2010 |
| 7636503 | Wavelength selective switch A wavelength selective switch of the present invention angularly disperses lights output from a plurality of input ports of an input and output optical system, to an X-direction, according to wavelength, by a diffraction grating to supply the dispersed lights to a c... | 12/22/2009 |
| 7630599 | Wavelength dispersive device with temperature compensation The invention relates to fiber-optic wavelength dispersive devices incorporating a wavelength dispersive reflector that provides auto-compensation of variations of output spectral characteristic with temperature and includes a transmissive dispersion that is followe... | 12/08/2009 |
| 7630598 | Apparatus and method for providing an optical cross-connect An optical cross-connect for shifting the location of one or more light beams in and array of light beams is provided. An exemplary embodiment of an optical cross connect includes an input array for inputting an array of light beams; at least a portion of a spherica... | 12/08/2009 |
| 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 adjusting a curvature of the common beam steerer so that paths of th... | 11/24/2009 |
| 7613370 | Optical switch and method of adjusting optical switch An optical switch includes an input port into which a multiplexed optical signal is input; a dispersing unit that, according to wavelength, disperses the multiplexed optical signal into a plurality of optical signals that are each dispersed in a unique direction; a ... | 11/03/2009 |
| 7599587 | Wavelength selective switch In a wavelength selective switch according to the present invention, an isolator is disposed between a lens array and a first lens. The isolator includes an isolator element and a transmitting means. The isolator is disposed so that the isolator element is on light ... | 10/06/2009 |
| 7596290 | 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, and outputs the deflection control amount to a driving unit. When an ... | 09/29/2009 |
| 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, displace; N being greater or equal to 3 while M is greate... | 09/15/2009 |
