| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Optical transmission system | US10635723 | 2003-08-07 | US07251072B2 | 2007-07-31 | Toshihiro Ohtani; Tsukasa Takahashi; Eiji Ishikawa; Hiroto Ikeda; Hiroyuki Deguchi |
| A reliable optical transmission system with an improved signal control mechanism that avoids abrupt power variations of light beams, thereby preventing optical supervisory channel (OSC) signals from experiencing errors. An optical amplifier amplifies main signals under the control of an optical amplifier controller, which spends a first predetermined time to raise the output power of the optical amplifier up to a desired level. A pump light source produces a pump beam for injection to a fiber-optic transmission line so as to make it serve as an amplifying medium. The pump light source is controlled by a pump light source controller that spends a second predetermined time to raise the pump beam to a desired power level. This stepwise start-up process of the amplifier power and pump beam power prevents OSC signals from experiencing abrupt power variations. | ||||||
| 82 | Optoelectronic transceiver having dual access to onboard diagnostics | US11462030 | 2006-08-02 | US07200337B2 | 2007-04-03 | Lucy G. Hosking; James Stewart; Anthony Ho |
| 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 a host access to each of these controller ICs separately and independently. At least some of the digital diagnostic data is common to both the first controller IC and the second controller IC. The inclusion of two controller ICs allows the same diagnostic data to be stored in completely different memory mapped locations. This allows hosts that are preconfigured differently to read different memory mapped locations on the different controller ICs to obtain the same diagnostic data. | ||||||
| 83 | Optoelectronic Transceiver Having Dual Access to Onboard Diagnostics | US11462030 | 2006-08-02 | US20060263092A1 | 2006-11-23 | Stephen Hosking; James Stewart; Anthony Ho |
| 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 a host access to each of these controller ICs separately and independently. At least some of the digital diagnostic data is common to both the first controller IC and the second controller IC. The inclusion of two controller ICs allows the same diagnostic data to be stored in completely different memory mapped locations. This allows hosts that are preconfigured differently to read different memory mapped locations on the different controller ICs to obtain the same diagnostic data. | ||||||
| 84 | Method and system for improved eye protection safety of distributed Raman amplifiers | US11001055 | 2004-12-02 | US07116471B2 | 2006-10-03 | Uri Ghera; Daniel Berger; Itzhak Filiba; 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. | ||||||
| 85 | Fault forwarding in an optical network | US10219833 | 2002-08-15 | US07113699B1 | 2006-09-26 | Anuradha Bhate; Denis Houle |
| 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 transmitters used to propagate the signal towards its destination. Thus, a node or other network element not capable of generating an alarm signal consistent with an established alarm signaling protocol, such as a SONET alarm indication signal (AIS) or an SDH multiplexer section alarm indication signal MS-AIS, may still forward the fault condition to a downstream element. | ||||||
| 86 | System and method for protecting eye safety during operation of a fiber optic transceiver | US10266869 | 2002-10-08 | US07058310B2 | 2006-06-06 | Lewis B. Aronson; Lucy G. Hosking |
| 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 conversion circuitry for receiving a plurality of analog signals from the laser transmitter and photodiode receiver, converting the received analog signals into digital values, and storing the digital values in predefined locations within the memory. Comparison logic compares one or more of these digital values with predetermined setpoints, generates flag values based on the comparisons, and stores the flag values in predefined locations within the memory. Control circuitry in the controller shuts off the laser transmitter in response to comparisons of signals with predetermined setpoints that indicate potential eye safety hazards. | ||||||
| 87 | Optical amplifier supervisory control method in WDM communication system | US10083162 | 2002-02-27 | US06977771B2 | 2005-12-20 | Taro Asao; Nobuyuki Nemoto; Kazuo Tanaka; Kazunori Horachi |
| The gain control circuit controls the amplification ratio of EDFA based on the results of having measured the input power monitor which monitors the EDFA input optical level which amplifies light and of having measured the output power monitor which monitors the output optical level. The optical pre-amplifier receives a notice of the number of wavelengths from a fore node and a notice of whether the optical post-amplifier of a fore node is in normal operation by a supervisory control signal, and changes over the gain control circuit to either the ALC or AGC mode. When the number of wavelengths changes while the optical pre-amplifier is operating in the ALC mode, the optical pre-amplifier is controlled in the AGC mode using the backed-up amplifier gain. Also, the gain value when the optical pre-amplifier is in routine operation is backed up in an amplifier gain back-up unit and an back-up unit. | ||||||
| 88 | Optical transmission system | US11093475 | 2005-03-30 | US20050220454A1 | 2005-10-06 | Hideki Okuno |
| An optical transmission system capable of immediately stopping optical equipment which may emit a high-power output optical signal from the breaking point of a transmission line fiber. A control circuit has the first function of controlling an optical amplifier based on an optical supervisory channel received by an optical supervisory channel receiver. In addition, the control circuit has the second function of determining that the breaking of an optical fiber or the like has occurred when the strength of an optical supervisory channel received by an optical supervisory channel receiver is equal to or lower than a prescribed level and terminating the transmission of an optical signal through a line via the optical amplifier. With the second function, it is possible to prevent the emission of a high-power output optical signal from the breaking point of the optical fiber. | ||||||
| 89 | Optical transceiver module with onboard diagnostics accessible via pins | US11095996 | 2005-03-30 | US20050196111A1 | 2005-09-08 | Stephan Burdick; Lewis Aronson; Lucy Hosking |
| The optoelectronic transceiver includes a housing, an optical transmitter, an optical receiver, a memory, and an interface. The optical transmitter, receiver, memory, and interface are each disposed at least partially within the housing. The memory is configured for storing information relating to operation of the transceiver. The interface is configured to allow a host to read from host specified locations within the memory. The optoelectronic transceiver also includes a first row of at least five substantially parallel and elongate pins extending from the housing, and a second row of at least five substantially parallel and elongate pins extending from the housing. The second row is substantially parallel to the first row. The optoelectronic transceiver also includes two electrical contacts each aligned with at least one of the first and second rows. The two electrical contacts are configured to be electrically coupled to the interface. | ||||||
| 90 | Analog to digital signal conditioning in optoelectronic transceivers | US10817783 | 2004-04-02 | US20050058455A1 | 2005-03-17 | Lewis Aronson; Lucy Hosking; Daniel Case; Jayne Hahin; Gerald Dybsetter |
| Circuitry for monitoring the operation of an optoelectronic transceiver includes a sequence of interconnected signal processing circuits for processing an analog input signal and producing a digital result signal, where the analog signal represents one or more operating conditions of the optoelectronic transceiver. The sequence of signal processing circuits include gain circuitry for amplifying or attenuating the analog input signal by a gain value to produce a scaled analog signal, an analog to digital converter for converting the scaled analog signal into a first digital signal, and digital adjustment circuitry for digitally adjusting the first digital signal to produce the digital result signal. The digital adjustment circuitry includes shifting circuitry configured to shift an input digital signal in accordance with a shift value so as to produce a digital shifted signal. The digital result signal is stored in memory in predefined locations accessible by a host. | ||||||
| 91 | Optical transmission system | US10808606 | 2004-03-25 | US20050041968A1 | 2005-02-24 | 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. | ||||||
| 92 | Method for establishing a communication on a standby link in optical transmission facilities | US09646367 | 1998-12-03 | US06839515B1 | 2005-01-04 | Oliver Jahreis; Jürgen Heiles |
| A method for standby switching in optical transmission devices is provided, wherein, in addition to a working signal and a protection signal, respective control signals with information concerning the allocation state are transmitted and evaluated at the receiving end. The control signals are transmitted via a monitoring channel even when the useful signal is switched off. | ||||||
| 93 | Automatic power restoring method and optical communication system | US10793665 | 2004-03-05 | US20040213567A1 | 2004-10-28 | 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. | ||||||
| 94 | Method and system for encoding optical communication information during automatic laser shutdown restart sequence | US10102790 | 2002-03-21 | US20040208641A1 | 2004-10-21 | Paul A. Smeulders |
| A system and method for identifying one or more characteristics of an optical signal, in which a transmitter is operable to transmit an optical signal and a receiving unit is operable to receive the optical signal. The transmitter has a laser for generating the optical signal and an encoding unit adapted to control the laser to activate and deactivate the optical signal during a laser shutdown state based on a predetermined code. The receiving unit has an optical receiver optically coupled to the transmitter by a light transmission medium and is operable to receive the optical signal from the transmitter. The receiving unit also has a decoder measuring at least one of an active time of the optical signal and the inactive time between active times of the optical signal. The decoder determines at least one of the one or more characteristics of the optical system based on at least one of the active time or the inactive time. | ||||||
| 95 | Method for automatically provisioning a network element | US10093847 | 2002-03-08 | US20040208528A1 | 2004-10-21 | Richard Adleman; Peter L. Bartman; Heribert J. Blach; Janet M. Greenberg; Mile Radovanovic; David A. Sadler; Mary Socratous; Scott D. Young |
| Embodiments of the invention generally provide a method for automatically detecting and provisioning new optical connections in a network element (NE). The detection of the optical connections is generally accomplished via optical scans, and in particular, an optical spectral analysis type scan, which may be conducted at specific times and at specific points within the NE in order to determine an association corresponding to a new connection through the NE. The automatic detecting in provisioning method of the invention may generally be implemented on connections in end terminals (ET), as well as connections in optical add/drop multiplexer (OADM) NEs. As such, embodiments of the invention allow for automatic detection and provisioning of optical circuit packs in an optical line system (OLS) based upon optical scans configured to detect the presence of valid incoming client signals through the NE. | ||||||
| 96 | Memory mapped monitoring circuitry for optoelectronic device | US10800177 | 2004-03-12 | US20040175172A1 | 2004-09-09 | Lewis B. Aronson; Stephen G. Hosking |
| 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, converting the received analog signals into digital values, and storing the digital values in predefined memory-mapped locations within the optoelectronic device. Comparison logic compares one or more of these digital values with limit values, generates flag values based on the comparisons, and stores the flag values in predefined locations within the optoelectronic device. An interface enables a host device to read from and write to host-specified memory mapped locations within the optoelectronic device. | ||||||
| 97 | Optical transmitter-receiver | US09771794 | 2001-01-29 | US06724993B2 | 2004-04-20 | Yasuhiro Koike; Takeshi Ota |
| An optical transmitter-receiver that does not have a harmful effect on the human eye when an optical fiber is disconnected from the apparatus and is able to determine easily when the fiber has been reconnected. A normal signal detector and a dummy signal detector determine when a signal from another optical transmitter-receiver is no longer received due to disconnection of an optical fiber. This result switches an output switch and causes a second reference voltage to be transmitted to an optical output automatic controller, thereby reducing the power of a laser diode. At the same time, a signal switch provides a dummy signal having a low frequency to the laser diode in place of the normal signal, resulting in output of a dummy optical signal. At this time, the other optical transmitter-receiver also outputs a dummy optical signal. When the optical fiber is reconnected, the dummy signal transmitted from the other optical transmitter-receiver is detected. Upon detection, the output of the laser diode is set to a normal high value, and a normal signal is output. | ||||||
| 98 | Optical transmission system | US10635723 | 2003-08-07 | US20040042063A1 | 2004-03-04 | Toshihiro Ohtani; Tsukasa Takahashi; Eiji Ishikawa; Hiroto Ikeda; Hiroyuki Deguchi |
| A reliable optical transmission system with an improved signal control mechanism that avoids abrupt power variations of light beams, thereby preventing optical supervisory channel (OSC) signals from experiencing errors. An optical amplifier amplifies main signals under the control of an optical amplifier controller, which spends a first predetermined time to raise the output power of the optical amplifier up to a desired level. A pump light source produces a pump beam for injection to a fiber-optic transmission line so as to make it serve as an amplifying medium. The pump light source is controlled by a pump light source controller that spends a second predetermined time to raise the pump beam to a desired power level. This stepwise start-up process of the amplifier power and pump beam power prevents OSC signals from experiencing abrupt power variations. | ||||||
| 99 | Optoelectronic transceiver having dual access to onboard diagnostics | US10616362 | 2003-07-08 | US20040022543A1 | 2004-02-05 | Stephen G. Hosking; James Stewart; Anthony Ho |
| The 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 a host access to each of these controller ICs separately and independently. At least some of the digital diagnostic data is common to both the first controller IC and the second controller IC. The inclusion of two controller ICs allows the same diagnostic data to be stored in completely different memory mapped locations. This allows hosts that are preconfigured differently to read different memory mapped locations on the different controller ICs to obtain the same diagnostic data. | ||||||
| 100 | Optical fibre monitoring system | US09573235 | 2000-05-18 | US06681079B1 | 2004-01-20 | Andrew V Maroney |
| The present invention provides a method of monitoring a transmission fiber including the steps of transmitting a monitor signal on the transmission fiber in a direction opposite to the propagation of traffic signals on the transmission fiber, at an optical amplifier connected to the transmission fiber detecting the monitor signal and automatically shutting down the optical amplifier in response to a predetermined change in the detected monitor signal. The invention facilitates a faster shut down of amplifiers when a fault occurs than is currently available because it shuts down the amplifier feeding directly into the area of broken fiber first rather than last as in conventional communication systems. | ||||||
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