Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8019219 | Optical packet switching apparatus and method therefor An optical switch section that switches the path of an optical packet transmitted thereto and outputs the optical packet, and a control section that generates multiple switch control signals in accordance with the destination of an optical packet transmitted thereto... | 09/13/2011 |
| 7853146 | Optical transmission apparatus An optical transmission apparatus that improves the reliability of system operation by efficiently limiting the line speed of a signal sent from a user with a guard mechanism. An optical branching section makes an optical signal branch in two directions. A through b... | 12/14/2010 |
| 7738788 | Address recognition apparatus An address recognition apparatus may include a first normalizing unit, a second normalizing unit and an address determination unit. The first normalizing unit normalizes a first electric signal and generates a first normalized signal, wherein the first electric sign... | 06/15/2010 |
| 7512339 | Optical packet processing apparatus In an optical packet processing apparatus, an optical coupler joins optical packets transmitted through a plurality of input side optical transmission lines and outputs the joined optical packets to an output side optical transmission line. The optical packet proces... | 03/31/2009 |
| 7499650 | Optical burst switching node with internal speedup A multiple-plane OBS node comprises N input ports, N 1×N switches, N switching planes, N2 FDLs, N optical couplers, and N output ports, each input port is connected with the input of a corresponding 1×N switches, the N outputs of each 1×N switch are co... | 03/03/2009 |
| 7415002 | Circuit synchronization over asynchronous links A device that synchronizes circuits over asynchronous links is disclosed. Some embodiments of the invention include a device that comprises a plurality of circuits. One of the plurality of circuits is designated as a “master” circuit. The master circuit is confi... | 08/19/2008 |
| 7409114 | Optical modulator An optical modulator using a thin plate including a portion having 20 μm or less thickness, capable of selecting a specific polarized wave from a light wave which propagates in an optical waveguide in the modulator without reduced productivity. The modulator includ... | 08/05/2008 |
| 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 commutation section with MEMS devices. The first section is a fixed p... | 04/29/2008 |
| 7366414 | Method and apparatus utilizing tunable differential group delay A method and apparatus for utilizing tunable differential group delay with at least a component of a fiber optic transmission system includes providing a tunable differential group delay system that is optically connected to a component of the fiber optic transmissi... | 04/29/2008 |
| 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 optical-electrical-optical (OEO) core switching nodes to allow for future upgrade o... | 04/08/2008 |
| 7332234 | Optoelectronic device capable of participating in in-band traffic An optoelectronic device that has a network address (e.g., IF address) and participates in in-band traffic for purposes of performing functions (e.g., network diagnostics, network control, network provisioning, fault isolation, etc.) that are traditionally performed... | 02/19/2008 |
| 7310479 | Multi-wavelength optical packet switch system with shared output buffer A multi-wavelength optical packet switch system with shared output buffer is disclosed, which includes N input fibers, N output fibers, an input device, a wavelength converter, a wavelength router, an output buffer, a wavelength classifier and a control device. The ... | 12/18/2007 |
| 7277636 | Optical communication apparatus and methods using pulses having modified propagation speeds An improved apparatus and method for enhancing the performance of optical transmission and network systems (such as SONET or SDH). A magnetically trapped atomic cloud chamber is provided which selectively alters the group velocity of light waves propagating through ... | 10/02/2007 |
| 7272312 | Optical router An optical router for selecting optical paths for optical signals and outputting the optical signals. The optical router includes an optical delay device to delay the optical signals containing routing information in a header. An optical switch having input ports' a... | 09/18/2007 |
| 7272324 | Equalization of optical signals Methods for performing time-domain equalization of an information signal represented by an optical signal are provided. A representative method includes: receiving the optical signal; optically splitting the optical signal into beams; optically delaying at least one... | 09/18/2007 |
| 7266295 | Modular reconfigurable multi-server system and method for high-speed networking within photonic burst-switched network A modular reconfigurable multi-server system with hybrid optical and electrical switching fabrics for high-speed networking within a wavelength-division-multiplexed based photonic burst-switched (PBS) network with variable time slot provisioning. An optical high-spe... | 09/04/2007 |
| 7254329 | Method and system for multi-initiator support to streaming devices in a fibre channel network A method and system are disclosed for processing multiple commands to a streaming target device through a SCSI router in a Fibre Channel network provisioned with one or more Fiber Channel hosts. The system and method are implemented in the SCSI router and include cr... | 08/07/2007 |
| 7239775 | High repetition rate, linear, true time optical delay line An optical delay line for use with an optical source including input/output optics optically coupled to the optical source and a curved mirror with a reflective surface that is centered about an evolute curve of the delay line to retro-reflect light traveling along ... | 07/03/2007 |
| 7233720 | Devices based on optical waveguides with adjustable Bragg gratings A system for filtering light propagating in a waveguide is described. The system utilizes an adjustable periodic grating which induces mode coupling of predetermined frequencies of light propagating in the waveguide. ... | 06/19/2007 |
| 7224900 | Actively stabilized time multiplexer An optical time multiplexer for generating an N Gbits/s output signal (36) from n data modulated input pulse streams (21, 22) with a pulse frequency of N/n GHz, where nεIN and n≧2, with a combiner device for passively interleaving the n input pulse ... | 05/29/2007 |
| 7218859 | System and method for an optical signal monitor Techniques and systems for monitoring of optical signals are described. Each of a plurality of optical signals is supplied to an optical port. A port signal is generated based on each of the optical signals and each of the port signals is subjected to a time delay t... | 05/15/2007 |
| 7212739 | Protection switching arrangement for an optical switching system A protection arrangement for an optical switching system includes protection switching for switch planes in the optical core and for ports in the tributary cards. For a multiple layer switch core protection is also provided between layers. A first layer is for switc... | 05/01/2007 |
| 7212705 | All optical decoding systems for decoding optical encoded data symbols across multiple decoding layers The present invention provides an optical system for decoding, switching, demultiplexing, and routing of optical encoded data signals, including: at least first and second layers, each layer including at least one demultiplexing system having an input and a pluralit... | 05/01/2007 |
| 7206509 | Method and apparatus for temporally shifting one or more packets using wavelength selective delays A method and apparatus are disclosed for temporally shifting one or more packets using wavelength selective delays. The header information associated with each packet, together with a routing algorithm, routing topology information and internal OPTR state, is used t... | 04/17/2007 |
| 7190858 | Optical time delay apparatus incorporating diffractive element sets An optical time delay apparatus comprises: a multi-wavelength optical source; a diffractive element set imparting a wavelength-dependent delay on signals routed from the source to a 1×N optical switch; and N diffractive element sets routing signals from the 1×N sw... | 03/13/2007 |
| 7177544 | Photonic network packet routing method and packet router for photonic network A photonic network packet routing method includes the steps of optically encoding destination address information attached to an IP packet using light attributes, discriminating the encoded address information of the IP packet by optical correlation processing, swit... | 02/13/2007 |
| 7177500 | Symbology for encoding energy stream An optical coding protocol includes a first information channel having a first information bit slot and a first control bit slot, and a second information channel having a second information bit slot and a second control bit slot, wherein the first and second inform... | 02/13/2007 |
| 7162122 | Symbology for encoding energy stream An optical coding protocol includes a first information channel having a first information bit slot and a first control bit slot, and a second information channel having a second information bit slot and a second control bit slot, wherein the first and second inform... | 01/09/2007 |
| 7149432 | Method and apparatus for equalization across plural data channels Optical equalization across N (an integer, N>1) channels of a multi-channel link of a communications network, is accomplished by averaging effects of optical performance variations within each of the M (an integer, M>1) parallel data signals. At a transmitting end n... | 12/12/2006 |
| 7136587 | System and method for providing simulated hardware-in-the-loop testing of wireless communications networks A system and method for efficiently and effectively simulating hardware-in-the-loop testing of a wireless communications network. The system and method employs an optical matrix-vector multiplier (MVM) for performing optical signal processing to simulate radio frequ... | 11/14/2006 |
| 7133613 | Address determination circuit and optical communication system An address determination circuit makes an address determination of an optical packet to which a destination address and a source address are assigned on a bit-by-bit basis. The address determination circuit has an optical branching section which divides the optical ... | 11/07/2006 |
| 7126675 | Pulse shifted array A laser-radar receiver comprising an array of optical fibers, wherein the opposite ends of the optical fibers are connected to at least one electromagnetic radiation detector, each of the optical fibers having differing physical characteristics which result in known... | 10/24/2006 |
| 7113701 | Optical packet routing network system based on optical label switching technique An optical communication equipment comprises shared optical sources 88a–88d to be shared by communication nodes 100a–100d, the wavelengths of optical signals 76a–76d are conver... | 09/26/2006 |
| 7113665 | Optical router An optical router capable of efficiently allocating optimum optical paths to optical signals at optimum timings is provided in accordance with the present invention. The optical router is capable of delaying a plurality of the optical signals containing routing info... | 09/26/2006 |
| 7099587 | Apparatus and method for delaying optical signals for optical buffering and optical storage applications A delayed optical signal is generated from an inputted optical signal by cyclically transmitting the inputted optical signal between at least two ends of an optical medium and outputting the inputted optical signal from one of the ends of the optical medium after at... | 08/29/2006 |
| 7088495 | Method and apparatus for time-division multiplexing to improve the performance of multi-channel non-linear optical systems The present invention generally provides systems and methods for distribution of radiation among a plurality of optical channels, each of which can include a non-linear optical element. An optical system of the invention can include a source for generating radiation... | 08/08/2006 |
| 7085438 | Optical multi/demultiplexing circuit equipped with phase generating device An optical multi/demultiplexing circuit includes at least one phase generating optical coupler and an optical delay line coupled to the phase generating optical coupler. The phase generating optical coupler consists of at least one input and at least two outputs. At... | 08/01/2006 |
| 7085499 | Agile RF-lightwave waveform synthesis and an optical multi-tone amplitude modulator A waveform synthesizer comprising for synthesizing RF lightwave waveforms in the optical domain. These waveforms are constructed by generating their constituent Fourier frequency components or tones and then adjusting the amplitudes of those frequency components or ... | 08/01/2006 |
| 7068936 | Methods and apparatus for optical switching Methods and apparatus for providing a time slot switch which performs switching in the optical domain without the need for O-E-O conversion is described. The time slot switching device of the present invention may be part of a large switching device capable of perfo... | 06/27/2006 |
| 7054557 | Technique for routing data within an optical network A technique for routing data within an optical network having a plurality of network nodes is disclosed. In one embodiment, the technique is realized by receiving data at a first network node via a first optical signal having a first wavelength. The first wavelength... | 05/30/2006 |
