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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7616847 | Thermally tunable optical dispersion compensation devices Optical dispersion compensation (ODC) devices are disclosed. In one aspect, an ODC device may include first and second groups of optical resonator devices coupled together to compensate for optical dispersion by collectively delaying light. The first group of optica... | 11/10/2009 |
| 7428362 | Photonic crystal surface states A photonic crystal may be configured to support a surface state for logic. ... | 09/23/2008 |
| 7403690 | Photonic crystal surface states A photonic crystal may be configured to support a surface state for logic. ... | 07/22/2008 |
| 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 of an optical signal branches into two, and reflection diffusing ditc... | 04/22/2008 |
| 7327913 | Coherent optical detector and coherent communication system and method An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A thir... | 02/05/2008 |
| 7302135 | Waveguide bends and devices including waveguide bends Waveguide bends are specially designed according to a matching condition in order to suppress mode distortion and other undesirable effects. The bend is structured having regard to its length and curvature to ensure that at its end the first and second bend modes ar... | 11/27/2007 |
| 7274840 | Clean and test for fluid within a reflection optical switch system Fluid within a reflection optical switch system is purified. Gettering structures are placed within a chamber within the reflection optical switch system. The gettering structures includes heating components which when actuated attract impurities. The heating compon... | 09/25/2007 |
| 7272279 | Waveguide type optical branching device A waveguide type optical branching device having: two input ports; two output ports; optical waveguides extending from the input ports and the output ports respectively; and a coupling portion formed allowing the optical waveguides from the input ports and the outpu... | 09/18/2007 |
| 7266598 | Programmable data center Techniques are disclosed for providing a programmable data center, which includes a plurality of computers, a plurality of computing devices or resources, a programmable service fabric, and an operation controller. The computers act as computing hosts; the resources... | 09/04/2007 |
| 7239770 | Optical device An optical device enabling reducing device scale is constituted by M circulators (11a, 11b), (M being a natural number), a waveguide-type diffraction grating (12) including M first input/output waveguides (121a, 12... | 07/03/2007 |
| 7218799 | External optical modulator An optical modulator structure includes a block that includes electro-optical (EO) materials. A waveguide and electrode structure is formed on a substrate. The block is in close proximity to the waveguide and electrode structure so as to form optical modulation when... | 05/15/2007 |
| 7215853 | Optical module formed on common substrate for branching an optical signal A collimator 111 for an input light, a collimator 112 for an output light, a collimator 113 for a branched light, a collimator 114 for an inserted light and a wavelength selecting filter 115 are provided on a common substrate 13... | 05/08/2007 |
| 7212696 | Fiber optic damage detection system for composite pressure vessels An optical fiber wound onto an exterior surface of a composite structure in a two-dimensional pattern and adhered thereto to detect damage to the structure caused by impacts to or handling of the composite structure. ... | 05/01/2007 |
| 7177498 | Two-by-two optical routing element using two-position MEMS mirrors Retroreflecting elements adapted for use in two-by-two optical routing elements. Each retroreflecting element is configured to selectively retroreflect two optical rays. A first reflective surface, such as may be provided by a mirror, is inclined with respect to a r... | 02/13/2007 |
| 7167609 | Optical switch An optical switch has an input port, output ports, optical waveguides whose output path of an optical signal branch into two. A first stage optical switch section is provided in a branching portion of the optical waveguide, which switches a propagating path of an op... | 01/23/2007 |
| 7164817 | Optical switch and optical add/drop multiplexer using the same As a wavelength selection filter, a filter in which dielectric multilayered films are formed on a substrate, an optical fiber grating in which diffraction grating is formed in an optical fiber, and so on, can be used. As another optical demultiplexer 33, as d... | 01/16/2007 |
| 7164822 | Variable optical gain control device A variable optical gain control device is capable of amplifying an optical signal while controlling its luminous intensity. The device is made up of optical waveguide paths which are formed on a flat face of a substrate and includes an input directional coupler for ... | 01/16/2007 |
| 7149372 | Optical device The optical device comprises a first substrate 10 having a control circuit formed on; optical waveguide layer 40 formed above the first substrate and having a refractive index changed by electro-optic effect; and second substrates 14a, | 12/12/2006 |
| 7130540 | Optical transmission systems, devices, and methods Optical systems and devices for processing spectral groups, and optical methods for forming spectral groups, the optical system including at least one sub-network including at least one spectral group router configurable to route a plurality of optical signal channe... | 10/31/2006 |
| 7103241 | Optical switching device An optical switching device has a plurality of input ports, and a plurality of output ports, that uses only circulators and reflectors to perform optical switching. A plurality of circulators each having a plurality of ports while operating to output an optical sign... | 09/05/2006 |
| 7082233 | Optical switch and method of manufacturing the same An optical switch includes a film consisting of a polymer, a keep plate having a switching through hole and a driver. The film has a core linearly extending therein and a notch extending across a switching portion located halfway in the core. The keep plate holds th... | 07/25/2006 |
| 7059778 | Optical fiber bundle, light source device using the optical fiber bundle, and method for manufacturing the light source device An optical fiber bundle includes a plurality of optical fibers bundled on an input terminal side and on an output terminal side. The optical fiber bundle receives light from the input terminal side, and outputs the light to the output terminal side. The optical fibe... | 06/13/2006 |
| 7054519 | Reconfigurable optical add drop multiplexers with integrated power equalization Described are various optical, opto-electrical and electrical components and subsystems. Some embodiments include input and output waveguides supporting opposing facets separated by a gap. The degree to which the opposing facets are aligned with respect to one anoth... | 05/30/2006 |
| 7046872 | Optical switch, optical add-drop module, and optical communication system This two input two output type optical switch includes four one input two output type optical switches which are arranged to oppose one another, each of these one input two output type optical switches including a Y branch portion in which one optical waveguide is b... | 05/16/2006 |
| 7043098 | Optical device The optical device comprises a first substrate 10 having a control circuit formed on; optical waveguide layer 40 formed above the first substrate and having a refractive index changed by electro-optic effect; and second substrates 14a, | 05/09/2006 |
| 7035500 | Multi-mode interference waveguide based switch The present invention relates to device for space selective switching of an optical signal from an input access waveguide to a first selected output access waveguide. Said device comprising a multi-mode interference (MMI) waveguide having at a first side a number, N... | 04/25/2006 |
| 7031574 | Plug-in module for providing bi-directional data transmission A plug in communications module for achieving bi-directional communication along a single fiber-optic cable in a fiber-optic network. The plug in module is made such that it plugs directly into fiber-optic communication equipment of standard form factors. Bi-directi... | 04/18/2006 |
| 7027680 | Switch/variable optical attenuator (SVOA) A Switch/Variable Optical Attenuator (SVOA) includes a die including at least one 2×2 optical switch and a respective integral variable optical attenuator for each of the at least one 2×2 optical switch. Each of the at least one 2×2 optical switches includes an I... | 04/11/2006 |
| 7027683 | Optical devices with fluidic systems Fluidic systems, including microfluidic systems, are used to manipulate light by light-fluid interaction so as to affect reflection, refraction, absorption, optical filtering, or scattering of the beam. One or more fluids may be provided to a channel or chamber and ... | 04/11/2006 |
| 7020168 | High power multi-frequency laser A high power multi-frequency laser includes a laser cavity defined by reflective elements, a frequency routing device in the cavity comprising a plurality of frequency selective pathways, a first set of optical amplifiers optically coupled to a first end of the freq... | 03/28/2006 |
| 7013061 | 2×2 optical switching apparatus using photonic crystal structures A 2×2 optical switching apparatus using photonic crystal structures has a compact, simple structure and includes an optical-guide module having first, second, third and fourth waveguides, the first and second waveguides guiding a first optical signal of a first inp... | 03/14/2006 |
| 6993219 | Waveguide/MEMS switch A waveguide/MEMS switch adapted to redirect optical signals between output ports based on a phase shift change generated by motion of one or more movable MEMS mirrors incorporated therein. Advantageously, such a switch has a relatively high switching speed and low p... | 01/31/2006 |
| 6990267 | Moving fiber optical switch A moving fiber optical switch of the type having two opposed supports carrying optical fibers with a gap between the fiber ends, with at least one of the supports being flexibly mounted for pivotal movement relative to the other support, and in which: (1) an ... | 01/24/2006 |
| 6973238 | Optical switch and optical communication system A directional coupler type optical modulator with traveling-wave electrodes includes a first directional coupler region, a waveguide wave coupling region, a second directional coupler region, and a set of noncrossing traveling-wave electrodes disposed along the outs... | 12/06/2005 |
| 6968099 | Optical switch An optical switch (10) includes a housing (3), an input port (4), an output port (5), a switching element (6), a holder (7), and a driver (63). The holder holds the input and output ports in alignment with one another... | 11/22/2005 |
| 6968100 | MEMS waveguide shuttle 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 comprises a plurality of optical waveguides formed on a shuttle for s... | 11/22/2005 |
| 6956984 | Light driven, integrated optical device A fully light-controllable integrated optical switch applicable in a slab geometry configuration includes a waveguide and an ad-medium in contact with the waveguide. The the ad-medium comprises a photochromic protein as a material of non-linear optical property, whe... | 10/18/2005 |
| 6947220 | Devices for information processing in optical communications Devices and methods for information processing in optical communications are provided. In its simplest embodiments, collimated light (1) passes through a non-grating diffractive structure (2) and a lens (3). The light is spatially processed in t... | 09/20/2005 |
| 6937788 | Adjustable dispersion compensator with few mode fibers and switchable mode converters The specification describes dispersion compensators that are adjustable based on selection of mode propagation properties of two or more modes. The fundamental device structure comprises two or more sections of optical fiber that support the fundamental mode as well... | 08/30/2005 |
| 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 plane waveguide 2. A mirror 10 for... | 08/16/2005 |
