| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | Distributed Raman Amplifier Systems | US14820532 | 2015-08-06 | US20160043527A1 | 2016-02-11 | David Hochhalter |
| A distributed Raman amplifier system is disclosed. Distributed Raman amplifier systems can include a spool of fiber disposed between a distributed Raman amplifier and local or proximate optical point-loss sources, a carrier hotel for example. The spool of fiber has a fiber of sufficient length to offset aggregated losses, which prevents the distributed Raman amplifier from shutting down while also allowing the distributed Raman amplifier to achieve entitled gain by pumping the fiber in the spool. | ||||||
| 62 | Optical amplification device and method of controlling optical module | US14257298 | 2014-04-21 | US09240666B2 | 2016-01-19 | Mitsuya Kawashita; Jinlin Zhang; Eiji Maeda; Shota Mori |
| An optical amplification device includes: an optical module that outputs an amplified light; and a controller that makes the optical module emit a light when an emission command is input into the controller, wherein the controller cancels an inputting of the emission command until a predetermined time passes, when a protection for forbidding a light emission of the optical module is canceled. | ||||||
| 63 | Power management implementation in an optical link | US14182492 | 2014-02-18 | US09236948B2 | 2016-01-12 | Klaus D. Giessler; Christine M. Krause |
| An optical link power management scheme takes the best advantage of a dynamic connection environment, where ports may be connected and disconnected at any time, and where data flows may start and stop as needed by the applications using the high speed data links Power consumption is optimized, eye safety standards are met, and robust connection detection is preserved. | ||||||
| 64 | Method of monitoring an optoelectronic transceiver with multiple flag values for a respective operating condition | US13948082 | 2013-07-22 | US08849123B2 | 2014-09-30 | Lewis B. Aronson; Lucy G. Hosking |
| An optoelectronic transceiver includes an optoelectronic transmitter, an optoelectronic receiver, memory, and an interface. The memory is configured to store digital values representative of operating conditions of the optoelectronic transceiver. The interface is configured to receive from a host a request for data associated with a particular memory address, and respond to the host with a specific digital value of the digital values. The specific digital value is associated with the particular memory address received from the host. The optoelectronic transceiver may further include comparison logic configured to compare the digital values with limit values to generate flag values, wherein the flag values are stored as digital values in the memory. | ||||||
| 65 | METHOD AND APPARATUS FOR DETECTING A FAULT ON AN OPTICAL FIBER | US14252474 | 2014-04-14 | US20140226969A1 | 2014-08-14 | Jagdish S. Patel; Keshav Kamble; Gregory Allen Foster |
| Mechanisms for operating a network element in an optical network are disclosed. A network element has a plurality of ports, each port including a respective receive input for receiving an optical signal from another network element and a respective transmit output for transmitting an optical signal to the other network element. Each port is configured with a respective fault detection mode of a plurality of fault detection modes. The plurality of fault detection modes include a first fault detection mode in which interruption of the optical signal received from the other network element on the respective receive input is interpreted as indicating interruption of an optical path from the respective transmit output to the other network element, and a second fault detection mode in which detection of a predetermined signal pattern from the other network element on the respective receive input is interpreted as indicating interruption of the optical path from the respective transmit output to the other network element. | ||||||
| 66 | LIGHT MODULE INTERLOCK SYSTEM | US13653662 | 2012-10-17 | US20140105593A1 | 2014-04-17 | Eric VIETH |
| Described is a light module interlock system comprising: an optical cable enabled to transmit light of a first wavelength and a second wavelength different than the first wavelength; a first light module enabled to provide the first wavelength to the optical cable; a second light module enabled to provide the second wavelength to the optical cable; a sensor enabled to detect the first wavelength transmitted by the optical cable, the sensor located at an opposite end of the optical cable as the first light module; and an interlock in communication with the sensor, the interlock enabled to: disable the second light module when the sensor fails to detect the first wavelength, such that the second wavelength is no longer provided to the optical cable. | ||||||
| 67 | Method and apparatus for detecting a fault on an optical fiber | US11314678 | 2005-12-21 | US08699354B2 | 2014-04-15 | Jagdish S. Patel; Keshav Kamble; Gregory Allen Foster |
| The mode of operation in which a port is configured to operate may be selected so that the manner in which the port will interpret a loss of signal on a receive fiber may be specified. In an immediate mode, the port will interpret a loss of signal on a receive fiber as an indication of a fault on the transmit fiber (or interfaces associated with the transmit fiber) and will immediately shut its transmit interface down. In a multiple cycle detection mode, the port will not immediately interpret a loss of signal on a receive fiber as an indication of a fault on the transmit fiber, but rather will begin monitoring the receive fiber to look for a specified loss of signal pattern on the receive fiber. In this mode the port will interpret a repetitive loss of signal on the receive fiber as an indication of a fault on the transmit fiber. By providing a mode selector, the manner in which the ports are configured to operate may be adjusted individually, as a group, or globally. | ||||||
| 68 | Optical Safety Implementation in Protection Switching Modules | US13740484 | 2013-01-14 | US20130129342A1 | 2013-05-23 | Cinzia Ferrari; Alberto Tanzi |
| Optical safety functions are incorporated into protection switching modules which maintain redundant pathways to avoid interruptions in optical network connections. The optical safety functions which lower optical power levels upon interruptions of optical connections are effectively combined with protection switching procedures which are also triggered by interruptions in optical network connections. The interoperation of protection and safety processes keep optical power levels below hazardous levels at system points which might be accessible to human operators. | ||||||
| 69 | OPTICAL NETWORK TERMINAL | US13494508 | 2012-06-12 | US20120315041A1 | 2012-12-13 | Chang Il Yoon |
| Disclosed herein is an optical network terminal. The Optical Network Terminal (ONT) includes a laser diode for generating an optical signal to be transmitted to the OLT. A laser diode driving unit supplies driving current required for light emission of the laser diode. A driving current detection unit detects the driving current. A light emission time determination unit calculates a light emission time of the laser diode depending on a time for which the driving current is detected, and outputs a power control signal including information about results of a comparison between the light emission time of the laser diode and a preset reference time. A power supply voltage control unit interrupts a power supply voltage of the laser diode driving unit when the power control signal includes information indicating that the light emission time of the laser diode is longer than the reference time. | ||||||
| 70 | Optical communication device, optical communication system, optical output control method and program | US12511432 | 2009-07-29 | US08190023B2 | 2012-05-29 | Masaru Nishino |
| An input of a command to stop optical output or a command to reduce optical output by a main signal transmitting section is received from the outside. When the input of the optical output stop command or optical output reduction command is received, an inter-device control signal communication section transmits the optical output stop command or optical output reduction command. Based on the input optical output stop command or optical output reduction command, an output of optical signals from the main signal transmitting section is stopped, or else the output level is reduced to less than the output level during normal operation. | ||||||
| 71 | Optoelectronic Transceiver with Multiple Flag Values for a Respective Operating Condition | US13336963 | 2011-12-23 | US20120093504A1 | 2012-04-19 | Lewis B. Aronson; Stephen G. Hosking |
| An optoelectronic transceiver includes an optoelectronic transmitter, an optoelectronic receiver, memory, and an interface. The memory is configured to store digital values representative of operating conditions of the optoelectronic transceiver. The interface is configured to receive from a host a request for data associated with a particular memory address, and respond to the host with a specific digital value of the digital values. The specific digital value is associated with the particular memory address received form the host. The optoelectronic transceiver may further include comparison logic configured to compare the digital values with limit values to generate flag values, wherein the flag values are stored as digital values in the memory. | ||||||
| 72 | Automatic power restoring method and optical communication system | US12081781 | 2008-04-21 | US07792430B2 | 2010-09-07 | Hiroyuki Deguchi; Shinichirou Harasawa; Hideki Maeda; Akira Naka; Gentaro Funatsu |
| 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 path and an optical communication system using the method. To this end, in an optical communication system to which the automatic power restoring method of the invention is applied, a pilot signal having a low transmission rate, a wavelength of which is set based on loss wavelength characteristics obtained by combining loss wavelength characteristics of an optical fiber used for the optical transmission path and loss wavelength characteristics of the optical amplification medium on the optical transmission path, is transmitted and received between an optical transmitting station and an optical receiving station when a line fault occurs, and a detection of continuity is thus performed. According to the result of the continuity detection, the power state at the occurrence of line fault is automatically restored to the power state at a time of normal operation. | ||||||
| 73 | Apparatus for optical path monitoring and an optical shutter for preventing signal transimission in a faulty optical path | US10432563 | 2001-11-27 | US07729613B2 | 2010-06-01 | Andrew G. Lauder |
| The invention provides an optical shutter (400) for a communication system of a type comprising first (B1, B2) and second (A1, A2) communication paths along which information-bearing radiation propagates in opposite directions. The shutter (400) comprises: an optical tap (440) and a power monitor (430) for monitoring power of information-bearing radiation propagating along the first path (B1, B2) and for generating a corresponding radiation power indicative signal; a control unit (420) for comparing the indicative signal with a threshold value to generate a control signal (control); and shutter switch (410) for selectively substantially transmitting or blocking radiation propagating along the second path (A1, A2) in response to the control signal. | ||||||
| 74 | METHOD, SYSTEM, AND APPARATUS FOR MANAGING ALARMS IN LONG-REACH PASSIVE OPTICAL NETWORK SYSTEM | US12605067 | 2009-10-23 | US20100040363A1 | 2010-02-18 | Jianlin Zhou; Shimin Zou |
| A method, system and apparatus for managing alarms in a Long Reach Passive Optical Network (LR-PON) system are disclosed. The method includes: obtaining a PON signal from an Optical Line Terminal (OLT) or an Optical Network Unit (ONU) on one side; checking whether the obtained PON signal fails; and notifying the ONU or the OLT on the other side if the PON signal fails. The method, system and apparatus under the present invention monitor the LR-PON transmission quality and process various alarm indications raised in the LR-PON signal monitoring. | ||||||
| 75 | Automatic power restoring method and optical communication system | US12081780 | 2008-04-21 | US07664392B2 | 2010-02-16 | Hiroyuki Deguchi; Shinichirou Harasawa; Hideki Maeda; Akira Naka; Gentaro Funatsu |
| 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 path and an optical communication system using the method. To this end, in an optical communication system to which the automatic power restoring method of the invention is applied, a pilot signal having a low transmission rate, a wavelength of which is set based on loss wavelength characteristics obtained by combining loss wavelength characteristics of an optical fiber used for the optical transmission path and loss wavelength characteristics of the optical amplification medium on the optical transmission path, is transmitted and received between an optical transmitting station and an optical receiving station when a line fault occurs, and a detection of continuity is thus performed. According to the result of the continuity detection, the power state at the occurrence of line fault is automatically restored to the power state at a time of normal operation. | ||||||
| 76 | Optical transmission system | US11177590 | 2005-07-11 | US07551857B2 | 2009-06-23 | Tougo Fukushi; Hideaki Sugiya; Akira Yamamoto; Masanori Kondoh |
| An optical amplifier may be quickly returned from a shutdown state to a regular state after getting recovery information of a fault. Gain setting by ASE is conducted to the repeaters on the up-stream side during the shutdown state, by outputting ASE light with the same intensity as the WDM signal. Accordingly, before realizing the recovery of shutdown, the gain setting is completed with the light whose intensity is within the safe criterion. After realizing the recovery of shutdown, the optical transmission system can be returned quickly to the regular operating state after recovery of shutdown state. | ||||||
| 77 | Wavelength-division multiplex communication system and apparatus | US10288022 | 2002-11-05 | US07505685B2 | 2009-03-17 | Takako Takanashi; Futoshi Izumi |
| In the WDM communication system, in the absence of data to be transmitted on an optical channel, a pilot signal transmitting means transmits the channel-unique pilot signal data on the channel. A WDM communication apparatus on a receiving end detects the pilot signal data in the received WDM signals, and on the basis of the detection result, it evaluates whether each channel is used or not. It is thus easy to recognize which channel is unused (idle) of the WDM signals, so that channel resources can be used effectively according to the traffic. | ||||||
| 78 | Integrated memory mapped controller circuit for fiber optics transceiver | US11679800 | 2007-02-27 | US07502564B2 | 2009-03-10 | Lewis B. Aronson; Lucy G. Hosking |
| Circuitry for monitoring an optoelectronic device includes memory, including one or more memory arrays for storing information related to the optoelectronic device and analog to digital conversion circuitry for: receiving a plurality of analog signals from the optoelectronic device; converting the received analog signals into digital values; and storing the digital values in memory mapped locations within the memory. The analog signals correspond to operating conditions of the optoelectronic device. The circuitry further includes a memory interface for allowing a host device to read from and write to memory mapped locations within the memory in accordance with commands received from a host device. The memory interface allows the host device to read the digital values corresponding to operating conditions of the optoelectronic device from the memory mapped locations within the memory. | ||||||
| 79 | Optical transmission system | US10808606 | 2004-03-25 | US07409155B2 | 2008-08-05 | Tsukasa Takahashi |
| In an optical transmission system: a first unit generates a first optical supervisory signal being arranged on the shorter-wavelength side of main signals and containing information for determining continuity of an optical transmission line and a second optical supervisory signal arranged on the longer-wavelength side of the main signals and used for supervisory control of optical communication; a second unit generates a wavelength-multiplexed signal by optically multiplexing the main signals and the first and second optical supervisory signals, and transmits the wavelength-multiplexed signal onto the optical transmission line; a third unit receives the wavelength-multiplexed signal, and optically demultiplexes the wavelength-multiplexed signal into the main signals and the first and second optical supervisory signals; and a fourth unit determines whether or not the optical transmission line is optically continuous, based on the first optical supervisory signal, and performs supervisory control of optical communication based on the second optical supervisory signal. | ||||||
| 80 | Method and system for improved eye protection safety of distributed raman amplifiers | US11464198 | 2006-08-13 | US07283292B2 | 2007-10-16 | Uri Ghera; Daniel Berger; David Menashe |
| A system and method for providing eye-safety protection during operation of distributed Raman amplifiers based on the application of continuous out-of-band amplified spontaneous scattering (ASS) monitoring in an optical communication network span coupled to the Raman amplifier, and real-time detection and analysis of changes in the monitored ASS power level, The system includes at least one Raman pump for introducing Raman energy into the span, a monitoring unit for performing the continuous ASS monitoring, and a control unit operative to detect and analyze in real-time changes in the ASS power, and upon determination that such changes indicate an open span, to reduce the level of the Raman pump energy entering the span to a safe level. | ||||||
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