Bizarre Patents
Nicotine Containing Dental Floss
Keep away cavities and cancer at the same time.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7809263 | Optical transmission apparatus and control method therefor An optical transmission apparatus comprising a first detector for detecting the power of the supervisory signal light separated from received wavelength-division multiplexed signal lights; a second detector for detecting the power of the wavelength-division multiple... | 10/05/2010 |
| 7650073 | System and method for discovering wavelengths in network elements having an optical architecture A system and method of wavelength discovery in network elements having an optical architecture. In one embodiment, a first wavelength topology map is generated for wavelengths inserted in a first direction at each network element. A second wavelength topology map is... | 01/19/2010 |
| 7596314 | Optical communication management systems An optical medium, whether inside or outside an internet/telecommunications backbone, is managed using a management signal at a wavelength which is distinct from wavelengths of service signals. A multiplexer multiplexes the management signal onto the optical medium,... | 09/29/2009 |
| 7561798 | Testing a fiber link in a communication system without interrupting service There is provided a method for testing an optical fiber link. The method includes employing a wavelength division multiplexer (WDM) to receive a signal via a port of the WDM and multiplex the signal onto the optical fiber link. The signal is used in a test of the op... | 07/14/2009 |
| 7539413 | Observation apparatus and observation system The present invention discloses a submarine observation system in which a plurality of carrier lights assigned to each submarine observation equipment is transmitted from a land terminal apparatus to an optical submarine cable (down-going) by using a WDM transmissio... | 05/26/2009 |
| 7444077 | Optical transmission system, and pumping light source stopping device and method to be used in same system An optical transmission system includes an optical signal transmitter to output optical signal, a monitoring light transmitter to generate monitoring light, an optical multiplexer to output a multiplexed signal light by multiplexing the optical signal and monitoring... | 10/28/2008 |
| 7437069 | Automatic power restoring method and optical communication system The present invention provides an automatic power restoring method capable of reliably detecting continuity by the dissolution of a line fault, to restore the optical power, even in a structure including an optical amplification medium on an optical transmission pat... | 10/14/2008 |
| 7437070 | Submarine observation apparatus and submarine observation system In each of a plurality of submarine observation apparatus (1 to n), a branching unit (63) branches fixed-wavelength light (λ1) from an incoming wavelength-multiplexed light signal. An observation signal modulating unit (64) modulates the... | 10/14/2008 |
| 7430372 | Optical transmission system An optical transmission system is provided which is capable of booting the system by using an ASE (Amplified Spontaneous Emission) light in a manner to provide high quality. A pre-amplifier receives noise light and does gain setting in an amplifier booting mode and ... | 09/30/2008 |
| 7426347 | Shared optical performance monitoring An apparatus for shared optical performance monitoring (OPM) is provided. A wavelength sensitive device receives light at an input port and routes it wavelength selectively to a set of output ports. To perform optical performance monitoring on the output ports, a mo... | 09/16/2008 |
| 7421199 | System and method for subcarrier modulation as supervisory channel An apparatus and method for processing a supervisory signal for optical network applications. The apparatus includes a subcarrier transmission system configured to receive a first supervisory signal and output a second supervisory signal, and an electrical-to-optica... | 09/02/2008 |
| 7418212 | Electrical detection of optical symbols A system and method for detecting digital symbols carried in a received optical signal. The system comprises a functional element operative to receive a stream of samples of an electrical signal derived from the received optical signal and to evaluate a non-linear f... | 08/26/2008 |
| 7403712 | Matrix time division multiplex (MTDM) interrogation Embodiments of present system encompass: a plurality of laser sources that produce a plurality of respectively different optical wavelengths; a matrix switch having a plurality of inputs operatively coupled to the plurality of laser sources, each of the plurality of... | 07/22/2008 |
| 7400829 | Transmission apparatus and path selection method of a transmission apparatus A transmission apparatus that receives an optical signal by selecting any one of a plurality of provided optical signal transmission paths through protection control is configured to include a plurality of optical signal outputting sections that output the optical s... | 07/15/2008 |
| 7394981 | Optical communication management systems An optical medium, whether inside or outside an internet/telecommunications backbone, is managed using a management signal at a wavelength which is distinct from wavelengths of service signals. A multiplexer multiplexes the management signal onto the optical medium,... | 07/01/2008 |
| 7389044 | Method and system for providing a signature signal in an optical network in the event of loss of a client An optical network including multiple nodes is subject to intermittent faults that may raise alarms in the system. The invention focuses on an optical network based on the Any rate architecture. A single fault such as a client failure at a node in such a network can... | 06/17/2008 |
| 7386233 | Ring network made using a dual optical data bus The invention relates to an optical ring network comprising stations (340) which are connected to at least one optical fiber by means of optical couplers, the two ends of the optical fiber being connected to a point of presence or an optical network access no... | 06/10/2008 |
| 7386234 | Apparatus for remotely determining fault of subscriber terminals and method thereof An apparatus for remotely determining a fault of subscriber terminals and a method thereof, and more specifically, an apparatus by which in a passive optical network (PON) system, a central office determines a remote fault of subscriber terminals, and a method there... | 06/10/2008 |
| 7369763 | Apparatus and method for monitoring an optical transmission line An apparatus and a method for monitoring an optical transmission line. An optical pilot signal of a predetermined duration is transmitted along said optical transmission line and a return signal is sent back from a signal returner along the same transmission line co... | 05/06/2008 |
| 7343102 | Optical transmission system with automatic signal level adjustment and startup functions An optical transmission system with automatic startup functions to optimize the power level of optical signals entering each optical amplifier and operate those amplifiers in appropriate mode. In the process of starting up an optical transmission system, upstream an... | 03/11/2008 |
| 7340164 | Optical WDM transmission system An optical wavelength division multiplex transmission system (1) for transmitting optical signals (S) on a plurality of wavelength channels has a transmitting terminal (2) and a receiving terminal (3) interconnected by a transmission line (5 | 03/04/2008 |
| 7327954 | Optical signaling to share active channel information A method for optical supervisory signaling includes determining a wavelength channel status (WCS) value, a wavelength channel failure (WCF) value, and a wavelength channel lit (WCL) value for each one of multiple data channels services by an optical communication no... | 02/05/2008 |
| 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 |
| 7313327 | Switching control device for wavelength-division multiplexing optical signal In a WDM optical communication network composed of a transmitter, an optical switching device (an optical cross-connect, an optical router, etc.) and a receiver, when transmitting switching information to the optical switching device, the transmitter suspends the tr... | 12/25/2007 |
| 7308201 | Optical communication system A node is provided in an optical communications network that utilizes a first set of add/drop filter elements for extracting and combining optical signals that are carried on wavelength division multiplexed channels in a first wavelength band. Additionally, an extra... | 12/11/2007 |
| 7302178 | System and method for measuring power of optical signals carried over a fiber optic link A pilot tone generator receives optical energy from an optical communication medium carrying a plurality of optical signals. Each optical signal carries data modulated at a unique wavelength and further modulated with a unique identification signal. The identificati... | 11/27/2007 |
| 7295724 | Polymer based distributive waveguide sensor for pressure and shear measurement According to embodiments of the present invention, a distributed pressure and shear stress sensor includes a flexible substrate, such as PDMS, with a waveguide formed thereon. Along the waveguide path are several Bragg gratings. Each Bragg grating has a characterist... | 11/13/2007 |
| 7295776 | Optical LAN device An ring type optical LAN device includes a master node and a plurality of slave nodes that are interconnected by an optical fiber cable. A plurality of optical bypass transmission lines are provided in correspondence with each one of the slave nodes. Each of the opt... | 11/13/2007 |
| 7289729 | Optoelectronic marker for determining ownership of fiber optic cable A passive optical arrangement for indicating the presence of a change in ownership along a fiber optic cable span uses an attenuation unit at a splice location that will severely attenuate an optical signal propagating along the span at a predetermined “marker” ... | 10/30/2007 |
| 7286756 | DWDM system with IP telephony provisioning at remote locations A method for providing voice communications at an optical amplifier site of a DWDM system is disclosed. The method generally comprises receiving an optical service channel at the amplifier site and converting an optical signal of the optical service channel to a dig... | 10/23/2007 |
| 7280756 | Optical signal transmission system, optical signal transmitter, optical signal receiver, method of transmitting optical signal and method of receiving optical signal A main optical signal is wavelength-multiplexed with an optical identifier which is different in wavelength from this main optical signal, before a wavelength-demultiplexing is take place at a desired point so as to isolate the optical identifier from the main optic... | 10/09/2007 |
| 7274871 | Optical transmission system with raman amplifiers comprising a supervisory system An optical transmission system having a supervisory system of devices disposed along an optical link. Counter-propagating Raman amplifiers are disposed along the optical link. Low-frequency supervisory signals are superimposed on the optical signals traveling on the... | 09/25/2007 |
| 7274872 | System and method for subcarrier modulation as supervisory channel An apparatus and method for processing a supervisory signal for optical network applications. The apparatus includes a subcarrier transmission system configured to receive a first supervisory signal and output a second supervisory signal, and an electrical-to-optica... | 09/25/2007 |
| 7254326 | Optical transmission system with raman amplifiers comprising a supervisory system An optical transmission system having a supervisory system of devices disposed along an optical link. Co-propagating Raman amplifiers are disposed along the optical link. Low frequency supervisory signals are superimposed on the optical signals traveling on the opti... | 08/07/2007 |
| 7248797 | Transmitter-receiver device and a communication system The invention concerns a transmitter-receiver device (A, B) which comprises a receiver unit (RXA) arranged to receive light and optical signals from a transmitter unit (TXA) arranged to transmit light and optical signals. The device also comprises a supervising unit... | 07/24/2007 |
| 7224858 | Optical transmission network with a receiver photonic integrated circuit (RxPIC) utilizing an optical service chanel (OSC) An optical receiver photonic integrated circuit (RxFIC) comprises a semiconductor monolithic chip having an input to receive from an optical transmissior link a combined channel signal originating from an optical transmitter source and comprising a plurality of chan... | 05/29/2007 |
| 7212740 | Transmitter-receiver device and a communication system The invention concerns a transmitter-receiver device (A, B) which comprises a receiver unit (RXA) for receiving optical signals and transmitter unit (TXA) for transmitting optical signals. Furthermore, the transmitter-receiver device (A, B) comprises a supervising u... | 05/01/2007 |
| 7194205 | Optical transmission apparatus and optical systems An optical transmission apparatus, an optical repeater using the optical transmission apparatus, and an optical cross-connect equipment for controlling switches depending on supervisory information, comprising: a doped fiber for amplifying an optical signal of wavel... | 03/20/2007 |
| 7187862 | Method of locating faults in optical telecommunication networks A method, a system and a module are proposed for detecting and locating faults in an optical multi channel network composed of network nodes. The method includes assigning different sub-carrier pilot tones to a number of the nodes comprising Network Elements (NE), a... | 03/06/2007 |
| 7187861 | Method and apparatus for testing optical networks An instrument for measuring bidirectional optical signals propagating in an optical transmission path between elements one of which will not transmit if continuity of the transmission path is not maintained, for example a branch path between a central offices optica... | 03/06/2007 |
