Class 398/55 - space

Subclass of Class 398 - Optical communications
Definition: Subject matter wherein multiple information beams are
No. of patents: 166
Last issue date: 10/21/2008

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Number	Title	Issue Date
7440512	Electrical signal regenerator An electrical signal regenerator including an equalizer and a clock data recovery circuit is provided. The clock data recovery circuit is selected when an input signal of a higher bitrate multiplex level is detected, but the clock data recovery circuit is bypassed w...	10/21/2008
7398019	Control apparatus and control method of optical signal exchanger An object of the invention is to provide a control apparatus and a control method having a simple constitution, which can stably perform switching of optical path in an optical signal exchanger, while suppressing an influence on a control due to the mechanical reson...	07/08/2008
7398018	Optical transmission equipment An optical transmission equipment having a switchover control function of optical transmission lines enables to reduce a required space in a common equipment supervision and control portion. The optical transmission equipment includes a pair of a work interface unit...	07/08/2008
7369773	Methods and systems for polarization control and polarization mode dispersion compensation for wideband optical signals An optical processing method includes: receiving an optical signal from an optical system, wherein the optical signal is distorted by frequency-dependent polarization effects in the optical system; spatially dispersing frequency components of the distorted optical s...	05/06/2008
7362976	Generating of high rate modulated pulse streams The present invention provides an all optical system for generating high rate modulated signals including: a generator for generating a first periodic signal at a first rate; an optical chopping device arranged to receive the first periodic signal for producing a se...	04/22/2008
7352747	System and method of network traffic assignment on multiple parallel links between IP/MPLS routers In the operation of an MPLS network or the like, a network node receives a plurality of packets assigned to a label switched path (LSP) which exits the node on a link bundle. The node forwards the received packets such that packets assigned to the LSP are distribute...	04/01/2008
7353362	Multiprocessor subsystem in SoC with bridge between processor clusters interconnetion and SoC system bus A System-on-Chip (SoC) component comprising a single independent multiprocessor subsystem core including a plurality of multiple processors, each multiple processor having a local memory associated therewith forming a processor cluster; and a switch fabric means con...	04/01/2008
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
7317873	Optical packet switching system An optical packet switching system in which transmission quality, reliability, and system management in optical packet switching control are improved. An optical packet switch section includes semiconductor optical amplifiers as gate switches multistage-connected on...	01/08/2008
7315517	Non-blocking WDM optical networks A system is disclosed for implementing WDM optical networks, without blocking, and without the need for wavelength converters. The method is based on a hypercube topology for connecting the nodes, and a novel algorithm for constructing a routing tree such that block...	01/01/2008
7310683	Message relaying scheme based on switching in units of flows A message relay device suitable for contructing a ultra-high-speed message relaying system is disclosed. In the message relay device, a flow is detected by a prescribed condition, while a bypass channel capable of transferring messages with an amount of calculations...	12/18/2007
7298972	Optical switch and a control method thereof An optical switch for switching communication light beams propagating through a plurality of optical fibers. The switch includes a plurality of input-side lenses, a plurality of moving mirrors, a plurality of output-side lenses, light emitting units, and light recei...	11/20/2007
7295777	Optical/radio local access network A communication system includes a plurality of nodes and a plurality of point-to-point links that interconnect the plurality of nodes into a network. Each node includes an optical switch to controllably route a plurality of in-ports of the optical switch into a plur...	11/13/2007
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 switch core for reciprocal traffic. In one embodiment, an N-way reciproca...	11/06/2007
7286770	Fiber optic transmission lines on an SOC Disclosed is an integrated circuit comprising a plurality of cores attached to at least one transmitter and receiver, an optical transmission network embedded within the wire levels of the integrated circuit, and wherein the transmitter and receivers send and receiv...	10/23/2007
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 optically coupled to a respective second optical port; and an optical...	10/09/2007
7274877	Optical/radio local access network A communication system includes a plurality of nodes and a plurality of point-to-point links that interconnect the plurality of nodes into a network. Each node includes an optical switch to controllably route a plurality of in-ports of the optical switch into a plur...	09/25/2007
7269348	Router having dual propagation paths for packets A router comprising an interface module (IM), having an optical path and an electrical path and a speed sensor coupled between an input of the router and an input of the IM. The speed sensor is adapted to receive a packet and detect a speed of the IM connection and ...	09/11/2007
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 transmitters. Since the switching matrix operates in unclocked manner, i....	09/04/2007
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
7254328	Reconfigurable directional optical system A reconfigurable directional optical system comprises N ports that can be configured individually as inputs or outputs. A system of this kind comprises at least one optical device having unidirectional inputs and outputs the total number of which is equal to or less...	08/07/2007
7245328	Apparatus and method for controlling extinction ratio in a liquid crystal polarization controller optical switch A polarization controller includes: a liquid crystal cell; a mechanism for determining a compensation voltage; and a voltage driving circuit for applying the compensation voltage to the liquid crystal cell, where the application of the compensation voltage optimizes...	07/17/2007
7224877	Communication system using sheet light guide In a communication system using a sheet light guide (10) which is formed to contain light-scattering particles in a sheet optical medium and propagates signal light incident from one end surface thereof to the other end surface side while scattering the signa...	05/29/2007
7224861	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 switch core for reciprocal traffic. In one embodiment, an N-way reciproca...	05/29/2007
7215491	Optical path switching device and method An optical path switching method includes converging and irradiating, on a light absorption layer film provided in a thermal lens forming element including at least the film, each of a control light having a wavelength selected from a wavelength band which is absorb...	05/08/2007
7212743	Optical switch device, and optical reception device and optical switch network in which the optical switch device is applied The configuration of a liquid crystal switch capable of reducing attenuation in an optical switch, and an optical reception device and an optical switch network that use this liquid crystal switch device are described. The liquid crystal switch device includes optic...	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
7202996	Optical amplifier For setting the optical gain of an optical amplifier such as a Raman amplifier that is connected in a wavelength division multiplexing (WDM) system, the gain of the amplifier is made dependent on the states of optical polarizers connected to individual inputs of a W...	04/10/2007
7190896	Supervisory control plane over wavelength routed networks A dedicated IP-based wavelength routing/signaling control plane for optically switched network, is provided. The IP-based control plane is an out-band routing/signaling mechanism and does not require optical-electrical-optical (OEO) conversion. The control plane can...	03/13/2007
7187497	Polarization insensitive optical switching and routing systems and methods of manufacturing and operation Polarization converter assemblies are utilized to provide switching and routing systems with effective coupling between a first and second router assemblies, and to provide polarization insensitive switching and routing systems. An improved optical switching/routing...	03/06/2007
7181104	Optical monitor and a method for improved optical monitoring The inventor proposes herein a novel optical monitor requiring only a single fiber-coupled photodetector. In one embodiment of the present invention, the optical monitor further includes an optical coupler for tapping a portion of an optical signal, a tunable filter...	02/20/2007
7177301	Signal permuting A method of constructing a permuting network. A configuration for layers of a permuting network is selected based on a set of integer factors of N, the number of signals to be permuted, and on pre-selected types of switches. The permuting network is constructed in l...	02/13/2007
7167620	Devices and methods for all-optical processing and storage Devices and methods for optical processing and storage are described. In a preferred embodiment, an integrated optical gate matrix, that includes a set of nonlinear elements and waveguides interconnecting at least some nonlinear elements in the set of nonlinear elem...	01/23/2007
7155126	Method and apparatus for dynamic bandwidth control in a broadcast optical communications network A method and apparatus provide a network element and associated control system in a broadcast optical communications network, including an optical switch (switch fabric), to cross-connect selected wavelengths input to the switch to pre-determined output ports, under...	12/26/2006
7149427	Cooperating array of micromirror devices for wireless optical communication A micromirror array assembly (10, 20) for use in optical modules (5, 17) in a wireless network system is disclosed. The micromirror array assembly (10, 20) includes a plurality of mirrors (29) monolithically formed with a frame (43...	12/12/2006
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
7136547	Method and apparatus for beam deflection The invention provides a method and apparatus for directing a radiation beam (504, 606) in a desired direction. There is provided a movable member (10) supported for movement by a fixed member (40) and the movable member has an optical element, ...	11/14/2006
7133616	Wavelength-selective routing using an optical add/drop architecture A wavelength-selective routing capability is provided in a single network element by configuring the network element using a combination of add/drop network elements to route individual optical channels of WDM signals among a plurality of optical transmission paths ...	11/07/2006
7129601	Apparatus for controlled movement of an element A method and apparatus for supporting a movable member (10) with respect to a fixed member (40) is provided. The movable member (10) includes a magnetically permeable portion (81) contained therein and magnetic element (50) fixedly...	10/31/2006

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Class 398/55 - space