Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 8170416 | Optical switching device An optical switching device the size and costs of which are reduced by decreasing the number of switching elements and which can flexibly accommodate the expansion of the number of ports. An optical demultiplexing section has 2n (n=1, 2, 3, . . . ) input ... | 05/01/2012 |
| 8170415 | Physical wiring control device, physical wiring control method, and computer product An optical power information receiving unit receives optical power information transmitted from a power monitor. When it is judged that a new IT apparatus is connected to an optical switch, an optical switch control unit controls the optical switch to connect the IT... | 05/01/2012 |
| 8160445 | Digital cross-connect A digital cross-connect (DXC) (10) comprises: a plurality of ports (30-100) for receiving/outputting signals and switching and switching means (20) for selectively cross-connecting signals applied to one port to one or more other ports. T... | 04/17/2012 |
| 8135277 | Delayed optical router/switch A system, method, and apparatus for delayed optical router based on slow light and nondegenerate four-wave mixing processes are presented, in which three laser pulses interact with a three-level nonlinear optical medium composing two closely spaced ground states and... | 03/13/2012 |
| 8111990 | Apparatus for transferring optical data in optical switching system using time synchronization Provided is an apparatus for transferring optical data in an optical switching system using time synchronization. The apparatus performs time synchronization on optical data to input the optical data at regular intervals through fiber delay line for time synchroniza... | 02/07/2012 |
| 8111989 | Optical switch and optical signal communication system An optical switch including a first reversible optical circulator and a second reversible optical circulator is provided. Each of the first reversible optical circulator and the second reversible optical circulator respectively has four I/O ports, wherein the four I... | 02/07/2012 |
| 8107813 | Drive circuit and optical switch A drive circuit includes a first transistor that is controlled to be in on or off state in response to a control signal, and outputs, in on state, a positive current which is input from a first operational amplifier connected with a drain of the first transistor to ... | 01/31/2012 |
| 8055131 | Route query method in ASON A route inquiry method in ASON for implementing the route inquiry by the network element NE1 which has a protocol controller (PC) and a connection controller (CC) but without a route controller (RC) or routing database (RDB) having no enough information inclu... | 11/08/2011 |
| 8032023 | Reconfigurable DWDM wavelength switch based on complementary bandpass filters Programmable wavelength line switches and routers based on a complementary wavelength switch (CWS) building block are described for switching optical signals of different wavelengths between signal lines, with each carrying multiple wavelengths. The CWS building blo... | 10/04/2011 |
| 7995919 | Optical switch with power equalization An optical intensity control system for use with an optical switch providing individual signal paths between input and output ports. The system has a optical splitters connectable to output multiplexers of the switch and also has variable optical intensity controlle... | 08/09/2011 |
| 7953322 | Optical switch and optical switch control method According to an aspect of embodiment, an optical switch comprises a signal light input unit, a control light input unit, a first polarization controller, a second polarization controller, a coupler, a nonlinear medium, a monitor and a controller. The first po... | 05/31/2011 |
| 7894722 | Packaged optical device stack A packaged stack of optical devices includes two or more WDM optical devices, the stack having a reduced per-channel manufacturing cost and an improved mean time between failure relative to individual optical devices. WDM optical devices, which may be contained in a... | 02/22/2011 |
| 7848647 | Optical switch and optical waveform monitoring device utilizing optical switch The polarization direction of an optical signal is changed by a polarization controller so as to be orthogonal to a main axis of a polarizer. A control pulse generator generates control pulses from control beam with a wavelength which is different from the wavelengt... | 12/07/2010 |
| 7848648 | Optical network equipment and optical network A position in which an optical signal characteristic is compensated in an optical network can be chosen. An optical network equipment measures an optical signal characteristic for each wavelength, and notifies an optical network equipment on a communication path of ... | 12/07/2010 |
| 7840136 | Low-latency switch using optical and electrical proximity communication Embodiments of a switch are described. This switch includes input ports configured to receive signals (which include data) and output ports configured to output the signals. In addition, the switch includes switching elements and a flow-control mechanism, which is c... | 11/23/2010 |
| 7813640 | Optical connection switching apparatus and management control unit thereof An optical connection switching according to the present invention comprises an optical connection switching facility capable of making a connection between any one of optical input ports and any one of optical output ports, one or more optical transmitting/receivin... | 10/12/2010 |
| 7769292 | Automated testing and analysis of dense wave division multiplexing (DWDM) switching devices The introduction of automation of testing configuration and the extensive use of protocol adaptation to provide a consistent user interface for a test apparatus across multiple vendor implementations through the use of programmable adapter modules facilitates system... | 08/03/2010 |
| 7734175 | Network configuring apparatus An optical wiring switching unit includes a first connection interface. A packet switch includes a second connection interface. A resource includes a third connection interface, and is formed with at least one of a server and a storage device. A control device contr... | 06/08/2010 |
| 7720377 | Compute clusters employing photonic interconnections for transmitting optical signals between compute cluster nodes Various embodiments of the present invention are directed to photonic-interconnection-based compute clusters that provide high-speed, high-bandwidth interconnections between compute cluster nodes. In one embodiment of the present invention, the compute cluster inclu... | 05/18/2010 |
| 7715711 | Wavelength selective switch design configurations for mesh light-trails In accordance with the teachings of the present invention, wavelength selective switch (WSS) design configurations for mesh light-trails are provided. In a particular embodiment, a node included in an optical network comprises a first light access unit operable to a... | 05/11/2010 |
| 7706685 | Data communication network using optical power averaged multiplexing An optical network system, including multiple nodes, an optical switch, and a switch controller, is configured to achieve communication in the optical domain. Each node is configured to receive both high frequency and low frequency inputs, generally utilized for han... | 04/27/2010 |
| 7676153 | Digital delay device A digitally controlled optical delay apparatus providing optical signal delays electrically selectable in the picosecond to nanosecond range by way of selectable signal path lengths. Path lengths are incremented in physical length and path delay time according to di... | 03/09/2010 |
| 7672585 | Optical switch system Each of a plurality of semiconductor optical amplifiers operates as an optical gate switch and selects an optical signal indicated by a gate control signal from an optical gate switch control unit. A plurality of photodetectors monitor the power of an optical signal... | 03/02/2010 |
| 7639945 | Optical switch device and optical switching method In an optical switch device, an optical control pulse is inputted into a nonlinear optical fiber in phase with each optical pulse of signal light which is to be outputted, so that the polarization directions of the optical control pulse and the signal light form a p... | 12/29/2009 |
| 7620321 | Optical transmitting apparatus, method of increasing the number of paths of the apparatus, and optical switch module for increasing the number of paths of the apparatus An optical transmitting apparatus is configured such that K pieces of output ports of optical path switching units whose input port is connected to k-th input transmission path are connected to first to K-th output transmission paths except for the k-th output trans... | 11/17/2009 |
| 7620320 | Fibre selective control switch system The present invention is directed to a Fiber Selective Control Switch system for simulating human intervention during a test process for fiber network environments. The Fiber Selective Control Switch system may comprise a MCU, and at least one FSCS module mounted on... | 11/17/2009 |
| 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 each capable of outputting in parallel the optical byte of data. An ar... | 11/10/2009 |
| 7613394 | Optical switching device In the present optical switching device, a reference light of a wavelength same as or in the vicinity of a wavelength of a signal light, is given from a wavelength-variable light source via each output side optical circulator to each pertinent output light path, and... | 11/03/2009 |
| 7593637 | Optical transport system architecture for remote terminal connectivity The invention pertains to optical fiber transmission systems, and is particularly relevant to transmission of high volume of data and voice traffic among different locations. In particular, the improvement teaches the use of a single optical transport system for bot... | 09/22/2009 |
| 7577357 | Optical switch The present invention provides an optical switch in which a switching operation is not affected even when the polarization state of a control light varies. The optical switch comprises a loop-form optical waveguide loop circuit formed from an optical nonlinear mediu... | 08/18/2009 |
| 7570886 | Network with optical bandwidth on demand A network arrangement where traffic elements of network nodes are programmable. A traffic element comprises electrically controllable transceiver pool having one or more ports that are coupled to an electrically controllable optical director that has all-optical inf... | 08/04/2009 |
| 7567756 | Method of automatic adjustment of dither amplitude of MEMS mirror arrays Methods for adjusting dither amplitude for MEMS mirrors in optical switches and optical switches employing such a method are disclosed. A dither amplitude of one or more MEMS mirrors may be adjusted in an optical switch having an input port, and an array of one or m... | 07/28/2009 |
| 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 optical fibers is negated. In particular the optical path switching de... | 07/14/2009 |
| 7542675 | Optical switch with power equalization An optical intensity control system for use with an optical switch providing individual signal paths between input and output ports. The system has a optical splitters connectable to output multiplexers of the switch and also has variable optical intensity controlle... | 06/02/2009 |
| 7542676 | Fibre channel transparent switch for mixed switch fabrics A method and a Fibre Channel switch element are provided that allows communication between a host system and a target device attached to a proprietary switch fabric in a network. The Fibre Channel switch element includes a first port that communicates with the targe... | 06/02/2009 |
| 7457539 | 2×2 optical switch A 2×2 optical switch routs each light signal received from input ports to selected output. The optical switch has an adjustable light signal steering element, a fixed light signal steering element, and a steering element actuator. The adjustable light signal steeri... | 11/25/2008 |
| 7437071 | Distributive optical switching control system A localized and distributive optical switching control system is separated into three localized systems: a sensor system, a processor system, and a position driver system. The sensor system detects the light transmission efficiency from the input port to the output ... | 10/14/2008 |
| 7437075 | Integrated reconfigurable optical add/drop multiplexer An integrated reconfigurable planar lightwave add-drop (RPLAD) multiplexer for use in a WDM optical communication system is arranged such that each drop port can receive any wavelength channel and each add port can transmit on any wavelength channel. Drop port recon... | 10/14/2008 |
| 7434249 | FTTH PON that O/E converts 1310 nm for output to transmitters for E/O as 1550 nm A fiber to the home (FTTH) system based on a passive optical network (PON) includes an optical line terminal (OLT) block, an optical network terminal (ONT) block, and an optical distribution network (ODN). The ONT block includes a video-optical line terminal (V-OLT)... | 10/07/2008 |
| 7433597 | Deflection routing address method for all-optical packet-switched networks with arbitrary topologies A method of deflection routing a packet in an all-optical communication network is described. Routing and destination information is contained in the address header of the packet and is generated by the originating node while still in the electrical domain before co... | 10/07/2008 |
