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| Number | Title | Issue Date |
| 8111987 | Rogue ONU detection via photonic mixing A system, method, and computer readable medium for rogue Optical Network Unit (ONU) detection via photonic mixing, comprises a first Wavelength Division Multiplexer (WDM), a second WDM communicably coupled to the first WDM, a non-linear medium communicably coupled t... | 02/07/2012 |
| 8103164 | High frequency noise measurement board Optical test apparatus. A test apparatus for testing transmitter or receiver devices. The test apparatus includes a transmitter source configured to connect to an optical transmitter. A wide band, wide area optical detector is adapted to optically couple to the opti... | 01/24/2012 |
| 7920788 | Optical transceiver with clock for providing maintenance and lifetime information An optoelectronic device uses microcode to perform an end of life calculation for the optoelectronic device. In particular, the optoelectronic device senses environmental and operational parameters under changing conditions during device operation. The optoelectroni... | 04/05/2011 |
| 7840134 | Bit error rate based system and method for optimizing communication system performance A system (50) includes a communication path (170) and transmits data on a network (103, 106). A transmitter (101) transmits data on the network and a receiver (112) receives data from the network. A component (102, 114) in t... | 11/23/2010 |
| 7835642 | Optical transceiver module end of life indication An optoelectronic device that uses microcode to perform an end of life calculation for a laser in the optoelectronic device is disclosed. In particular, the optoelectronic device senses environmental and operational parameters under changing conditions during device... | 11/16/2010 |
| 7561796 | Optical sending apparatus, optical receiving apparatus, and optical transmission system for supervising fault information and methods thereof An optical transmission system for transmitting optical signals in which signals at different bit rates coexist, includes an optical sending apparatus for, when one or more faults are detected in a signal for transmission, generating a fault information signal with ... | 07/14/2009 |
| 7427164 | Optical connector arrangement comprising a converter The invention relates to an optical connector arrangement wherein the connector and the converter are connected by short plastic fiber sections. The aim of the invention is to provide one such connector arrangement which can be produced in a simple and cost-effectiv... | 09/23/2008 |
| 7424221 | Optical network terminal with illegal transmission detection circuitry An optical network terminal, which includes an optical transmitter, monitors the status of the optical transmitter, such as the output or the power consumption of the optical transmitter, to determine when the optical transmitter is illegally transmitting. When an i... | 09/09/2008 |
| 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 |
| 7305190 | Optical dispersion correction in transimpedance amplifiers A transimpedance amplifier having adjustment for optical distortion in an optical communication link. The transimpedance amplifier comprises a transimpedance stage and a post amplifier stage, which has a feedback path including an optical distortion adjustment circu... | 12/04/2007 |
| 7302190 | Optical communication system including replaceable electro-optic and opto-electric converters In an optical transmitting or receiving apparatus, a plurality of replaceable electro-optic converters or a plurality of replaceable opto-electric converters are provided in correspondence with optical transmission lines. ... | 11/27/2007 |
| 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 |
| 7283740 | Optical ring network with optical subnets and method An optical network includes a plurality of subnets. The subnets each include a plurality of add/drop nodes coupled to the optical ring and operable to passively add and drop traffic to and from the optical ring. The network further includes a plurality of gateway no... | 10/16/2007 |
| 7283739 | Multiple subnets in an optical ring network and method An optical network includes an optical ring and at least three subnets. Each subnet includes a plurality of add/drop nodes coupled to the optical ring. The add/drop nodes are operable to passively add a first traffic stream in a first direction on the optical ring a... | 10/16/2007 |
| 7274876 | Integrated electrical/optical hybrid communication system with revertive hitless switch A system according to embodiments of the invention may include a first communication path that converts an optically-modulated source signal to a radio signal based on a detected degradation in a quality of a received optical signal, and a second communication path ... | 09/25/2007 |
| 7272307 | Virtual protection channel for fiber optic ring network A single, normally inactive, protection ring, provides protection against a working channel failure in a fiber optic ring network. The protection channel is established and put into operation by a series of steps that are triggered by the detection of signal degrada... | 09/18/2007 |
| 7263286 | Fast testing system for optical transceiver and testing method thereof The present invention provides a fast testing system and method for optical transceiver, which integrates multiple testing machines in the testing environment for the optical transceiver, so that the user can employ the testing system for optical transceiver for rap... | 08/28/2007 |
| 7242860 | Optical protection switching using 2 by 2 switching functions A network is protected against interruption of service while one or more faulty switches or optical fiber transmission lines are repaired or replaced, by an interconnecting configuration of small N×N optical input/output switches, where N is 2 or greater than 2. Th... | 07/10/2007 |
| 7200337 | Optoelectronic transceiver having dual access to onboard diagnostics An optoelectronic transceiver includes first and second controller ICs. Each controller IC includes logic, a memory, an interface, and at least one input port. Each memory is configured to store digital diagnostic data and has a unique serial device address to allow... | 04/03/2007 |
| 7184660 | Method and system for monitoring performance of optical network The invention describes methods and systems for monitoring the performance of an optical network by marking a group of optical signals with a set of identification tags which are unique to network characteristics. In the preferred embodiments, fiber identification (... | 02/27/2007 |
| 7184668 | System and method for protecting eye safety during operation of a fiber optic transceiver A single-chip integrated circuit, sometimes called a controller, controls operation of a transceiver having a laser transmitter and a photodiode receiver. The controller includes memory for storing information related to the transceiver, and analog to digital conver... | 02/27/2007 |
| 7162160 | System and method for protecting eye safety during operation of a fiber optic transceiver A single-chip integrated circuit, sometimes called a controller, controls operation of a transceiver having a laser transmitter and a photodiode receiver. The controller includes memory for storing information related to the transceiver, and analog to digital conver... | 01/09/2007 |
| 7123840 | Infrared signal communication system and method including transmission means having automatic gain control An Improved Infrared Signal Communication System and Method Including Transmission Means Having Automatic Gain Control is disclosed. Also disclosed is system and method that adjusts signal transmission power in response to incident signal power amplitude. The prefer... | 10/17/2006 |
| 7113699 | Fault forwarding in an optical network A system and method for forwarding fault information in an optical network is disclosed. Responsive to a fault being detected at a node, the fault information is forwarded to the destination node in the form of a loss-of-signal condition by turning off laser transmi... | 09/26/2006 |
| 7110678 | Hybrid wireless optical and radio frequency communication link A hybrid wireless optical and radio frequency (RF) communication link utilizes parallel free-space optical and RF paths for transmitting data and control and status information. The optical link provides the primary path for the data, and the RF link provides a conc... | 09/19/2006 |
| 7099578 | 1:N protection in an optical terminal A communication network includes first and second terminals, nodes, and links. The first node is coupled to the first terminal through the first link, and coupled to the second terminal through the second link and the second node. The first node preferably includes ... | 08/29/2006 |
| 7088926 | Electro-optical connector module The invention pertains to an electro-optical connector module comprising a connection part, at least one optical transmitter circuit and/or optical receiver circuit and at least one electro-optical converter for respectively converting electrical signals into optica... | 08/08/2006 |
| 7079771 | Wavelength multiplexing transmission apparatus and wavelength demultiplexing reception apparatus The invention provides a wavelength multiplexing transmission apparatus includes a plurality of optical signal outputting sections for outputting optical signals having different wavelengths from each other, and a wavelength multiplexing section for wavelength multi... | 07/18/2006 |
| 7079775 | Integrated memory mapped controller circuit for fiber optics transceiver A controller for controlling a transceiver having a laser transmitter and a photodiode receiver. The controller includes memory for storing information related to the transceiver, and analog to digital conversion circuitry for receiving a plurality of analog signals... | 07/18/2006 |
| 7072582 | Optical transmitter power setting using feedback A method and system for automatically setting output power levels of optical transmitters in an optical communications arrangement. The optical communications arrangement includes at least a first and a second node, wherein the transmitter of the first node is optic... | 07/04/2006 |
| 7058310 | System and method for protecting eye safety during operation of a fiber optic transceiver A single-chip integrated circuit, sometimes called a controller, controls operation of a transceiver having a laser transmitter and a photodiode receiver. The controller includes memory for storing information related to the transceiver, and analog to digital conver... | 06/06/2006 |
| 7050720 | Integrated memory mapped controller circuit for fiber optics transceiver A controller for controlling a transceiver having a laser transmitter and a photodiode receiver. The controller includes memory for storing information related to the transceiver, and analog to digital conversion circuitry for receiving a plurality of analog signals... | 05/23/2006 |
| 7031606 | Method and system for monitoring performance of optical network The invention describes methods and systems for monitoring the performance of an optical network by introducing a fiber identification (FID) tag and/or bundle identification (BID) tag which are unique to the fiber section and to the bundle of fibers respectively. Th... | 04/18/2006 |
| 7006446 | Detection of duplicate participants in a two-way modem environment Duplicate participants (e.g., cloned subscriber units) (274) are detected in a communication network, such as a hybrid fiber/coax (HFC) cable television network or the like, by monitoring the physical layer of the network to detect transmission differences be... | 02/28/2006 |
| 6993258 | WDM transmitter A WDM transmitter comprising an array of M pump lasers multiplexed by an M×N multiplexer, in the form of a coupler, and used to feed an array of N optically pumped fiber lasers emitting at wavelengths λ1, λ2, . . . λN. The parame... | 01/31/2006 |
| 6961521 | Method and apparatus for transmitting a bit interleaved optical data stream on an optical network A method and apparatus for transmitting a bit interleaved optical data stream on an optical network is disclosed. In one embodiment, the network includes multiple transmitters that are enabled to transmit an optical bit during established time slots that correspond ... | 11/01/2005 |
| 6957021 | Optical transceiver with memory mapped locations A controller for controlling a transceiver having a laser transmitter and a photodiode receiver. The controller includes memory for storing information related to the transceiver, and analog to digital conversion circuitry for receiving a plurality of analog signals... | 10/18/2005 |
| 6952531 | System and method for protecting eye safety during operation of a fiber optic transceiver A single-chip integrated circuit, sometimes called a controller, controls operation of a transceiver having a laser transmitter and a photodiode receiver. The controller includes memory for storing information related to the transceiver, and analog to digital conver... | 10/04/2005 |
| 6941077 | Memory mapped monitoring circuitry for optoelectronic device Circuitry for monitoring operation of an optoelectronic device having a laser transmitter and a photodiode receiver includes analog to digital conversion circuitry for receiving a plurality of analog signals from the laser transmitter and photodiode receiver, conver... | 09/06/2005 |
| 6941071 | Test method and apparatus for parallel optical transceivers using serial equipment A test method and apparatus are provided for testing parallel optical transceivers. Each of a plurality of channels of the parallel optical transceiver is connected in series. A predefined data pattern is applied to a first channel of the series connected plurality ... | 09/06/2005 |
