| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Optical maintenance signaling in optical data networks | US10118596 | 2002-04-08 | US20030067648A1 | 2003-04-10 | Roman Antosik; Jayanta Das; Bharat Dave; Kuo-Ming Lee; David Lowe; Kwang Kim; Jithamithra Sarathy; Ronald Simprini; Boris Stefanov; Tan Thai; Wai-Ching Yu |
| A method and apparatus are presented for implementing maintenance signaling in an optical data network, said method comprising the use of a finite set of optical symbols to distinguish between different classes of failures. The method is format and bit rate transparent, and a network element does not need to read bits to interpret a signaling message. Faults protected within the network are distinguished from faults originating outside the network, and power glitches are filtered out of incoming alarm signals originating outside the network. | ||||||
| 102 | Optical amplifier | US09891205 | 2001-06-26 | US06532102B2 | 2003-03-11 | Hideki Kobayashi; Tsukasa Takahashi; Toshihiro Ohtani; Futoshi Izumi; Shota Mori |
| An optical amplifier and an optical multiplexing transmission system using the same are disclosed. Automatic restoration of the operation becomes possible and malfunctioning of an APSD function is prevented. The optical amplifier using Raman amplification includes; a Raman excitation light source for generating Raman light; and a detection circuit for detecting a signal error in an OSC (optical supervisory channel) signal transmitted in addition to optical transmission signal. When the detection circuit detects a bit error in the OSC signal, an output power from Raman excitation light source is controlled so as not to injure the human body. | ||||||
| 103 | Optical amplifier | US09891205 | 2001-06-26 | US20020114060A1 | 2002-08-22 | Hideki Kobayashi; Tsukasa Takahashi; Toshihiro Ohtani; Futoshi Izumi; Shota Mori |
| An optical amplifier and an optical multiplexing transmission system using the same are disclosed. Automatic restoration of the operation becomes possible and malfunctioning of an APSD function is prevented. The optical amplifier using Raman amplification includes; a Raman excitation light source for generating Raman light; and a detection circuit for detecting a signal error in an OSC (optical supervisory channel) signal transmitted in addition to optical transmission signal. When the detection circuit detects a bit error in the OSC signal, an output power from Raman excitation light source is controlled so as not to injure the human body. | ||||||
| 104 | Apparatus and method for visualizing an automatic laser shutdown state in an optical transmission system | US09939559 | 2001-08-28 | US20020024703A1 | 2002-02-28 | Byung Tak Lee; Jong Hoon Kim; Chang Bae Hyun |
| An apparatus and method are disclosed for visualizing an automatic laser shutdown (ALS) state. An operator is informed of the ALS state by transmitting a visible light with weak power, to an optical fiber, that effuses from the cut position of the optical fiber. The operator recognizes the cut position of the optical fiber by comparing the power of the ALS visible light reflected from the cut surface of the optical fiber and that of the transmitting ALS visible light, and thus restores the cut optical fiber at the recognized position. | ||||||
| 105 | Optical level control method | US09791915 | 2001-02-26 | US20020024690A1 | 2002-02-28 | Hiroyuki Iwaki; Tetsuo Wada |
| The present invention relates to an optical level control method for use in an optical transmission system. In the system, a WDM terminal comprises a multiplexing/demultiplexing unit, an amplifier, an up-direction OSC light transmitting/receiving unit, an up-direction multiplexer, an up-direction branching unit, an amplifier and an APR control unit, and a repeater comprises an up-direction branching unit, an OSC light transmitting/receiving unit, an amplifier, an up-direction multiplexer, a down-direction branching unit, an amplifier, a down-direction multiplexer and an APR control unit. In this configuration, a flexible optical output level control in connection with variation in WDM light level, a selective value irrespective of occurrence of an error stemming from the passage of time and avoidable malfunctions are respectively capable. In addition, a trouble retrieving operator can eliminate the possibility of being exposed to the WDM light. | ||||||
| 106 | Optical transmitter-receiver | US09771794 | 2001-01-29 | US20010033406A1 | 2001-10-25 | 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. | ||||||
| 107 | In-line optical amplifier | US659934 | 1996-06-07 | US5703711A | 1997-12-30 | Satoshi Hamada |
| An in-line optical amplifier includes a pumping source, a rare-earth element doped fiber amplifier, a gain regulator and a noise detector. An input power and an output power of the in-line optical amplifier are detected from the input optical signal and the output optical signal, respectively, and then they are used to detect a resultant gain of the in-line optical amplifier. The gain regulator controls the pumping light emitted by a pumping source such that the gain of the rare-earth element doped fiber amplifier is increased and a gain deviation of the resultant gain from a predetermined gain is reduced. The noise detector detects an internal noise or a noise figure based on the gain deviation, for example, by detecting the intensity of the pumping light or the magnitude of drive current of the pumping source. | ||||||
| 108 | LASER SAFETY IN DATA CENTERS AND OTHER REMOTE SITES | US15923105 | 2018-03-16 | US20180269965A1 | 2018-09-20 | Julia Y. Larikova; Yajun Wang |
| The disclosed methods, apparatus, and systems allow safe and easy deployment of amplifier products that exceed laser safe limits without the need for fiber testing and characterization or OTDR techniques. One example embodiment is a method for ensuring eye safety in an optical network. The example method includes detecting optical connectivity between an output of a transmit amplifier and a passive optical processing element. The transmit amplifier is located at a first network node and is configured to output optical power greater than eye-safe level. The passive optical processing element is located at a second network node and is configured to guarantee a reduction of a maximum optical power level at an output side of the passive optical processing element to an eye-safe optical level. The detecting occurs at the first network node, and the transmit amplifier is enabled or disabled as a function of detection of the optical connectivity. | ||||||
| 109 | POWER MANAGEMENT IMPLEMENTATION IN AN OPTICAL LINK | US15696832 | 2017-09-06 | US20170366271A1 | 2017-12-21 | 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. | ||||||
| 110 | Power management implementation in an optical link | US14993028 | 2016-01-11 | US09787406B2 | 2017-10-10 | 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. | ||||||
| 111 | Method of Monitoring an Optoelectronic Transceiver with Multiple Flag Values for a Respective Operating Condition | US15438659 | 2017-02-21 | US20170163346A1 | 2017-06-08 | 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. | ||||||
| 112 | Distributed Raman amplifier systems | US14820532 | 2015-08-06 | US09640941B2 | 2017-05-02 | 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. | ||||||
| 113 | Systems and methods for achieving improved eye safety of an optical transceiver | US14061503 | 2013-10-23 | US09391698B1 | 2016-07-12 | Ryohei Urata; Nathan Folkner; Zuowei Shen |
| Systems and methods for achieving eye safety of an optical transceiver are provided. An optical module can be configured to output a first optical signal. A first photodetector can be configured to output a signal indicative of a presence or absence of a second optical signal. A controller can be coupled to the optical module and the first photodetector and can be configured to control the output of the optical module. In response to a determination that an output of the first photodetector indicates the second optical signal is absent, the controller can control the optical module to output the first signal at a decreased average optical power. In response to a determination that an output of the first photodetector indicates the second optical signal is present, the controller can control the optical module to output the first signal at an increased average optical power. | ||||||
| 114 | Light module interlock system | US13653662 | 2012-10-17 | US09287991B2 | 2016-03-15 | 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. | ||||||
| 115 | Method of Monitoring an Optoelectronic Transceiver with Multiple Flag Values for a Respective Operating Condition | US14936642 | 2015-11-09 | US20160065309A1 | 2016-03-03 | Lewis B. Aronson; Lucy G. Hosking |
| The circuit monitors operation of an optoelectronic transceiver that includes a laser transmitter and a photodiode receiver. The circuit includes analog to digital conversion circuitry configured to convert a first analog signal corresponding to a first operating condition of said optoelectronic transceiver into a first digital value, and convert a second analog signal corresponding to a second operating condition of said optoelectronic transceiver into a second digital value corresponding to a second operating condition. The circuit also includes a memory configured to store the first digital value in a first memory location that is mapped to a predefined and unique first address and to store the second digital value in a second memory location that is mapped to a predefined and unique second address. The circuit includes an interface configured to enable a host external to the optoelectronic transceiver to access the first digital value using the first address and to access the second digital value using the second address. | ||||||
| 116 | Method of Monitoring an Optoelectronic Transceiver with Multiple Flag Values for a Respective Operating Condition | US14494823 | 2014-09-24 | US20150139661A1 | 2015-05-21 | 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. | ||||||
| 117 | Optical power adjustment method for ethernet passive optical network system, and optical line terminal | US13634521 | 2010-09-17 | US09008505B2 | 2015-04-14 | Shundong Xia |
| The present invention provides optical power adjustment method for EPON system, and OLT. The method comprises: OLT starting optical power adjustment procedure after ONU or ONT successfully registers, receiving upstream data from the ONU or the ONT (201); during optical power adjustment procedure, OLT detecting whether there is error code in upstream data; if not, notifying the ONU or the ONT to decrease transmission optical power progressively, during progressive decrease procedure, OLT continuing to detect whether there is error code in upstream data (203); if there is error code during progressive decrease procedure, notifying the ONU or the ONT to increase transmission optical power progressively, and during progressive increase procedure, OLT continuing to detect whether there is error code in upstream data (205); if there is no error code during progressive increase procedure, OLT stopping the adjustment (207). Unnecessary optical power consumption in upstream data transmission in EPON system is reduced effectively, therefore power is saved. | ||||||
| 118 | Power management implementation in an optical link | US12974654 | 2010-12-21 | US08712236B2 | 2014-04-29 | 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. | ||||||
| 119 | Optical safety implementation in protection switching modules | US12267894 | 2008-11-10 | US08396366B2 | 2013-03-12 | 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. | ||||||
| 120 | OPTICAL POWER ADJUSTMENT METHOD FOR ETHERNET PASSIVE OPTICAL NETWORK SYSTEM, AND OPTICAL LINE TERMINAL | US13634521 | 2010-09-19 | US20130004161A1 | 2013-01-03 | Shundong Xia |
| The present invention provides optical power adjustment method for EPON system, and OLT. The method comprises: OLT starting optical power adjustment procedure after ONU or ONT successfully registers, receiving upstream data from the ONU or the ONT (201); during optical power adjustment procedure, OLT detecting whether there is error code in upstream data; if not, notifying the ONU or the ONT to decrease transmission optical power progressively, during progressive decrease procedure, OLT continuing to detect whether there is error code in upstream data (203); if there is error code during progressive decrease procedure, notifying the ONU or the ONT to increase transmission optical power progressively, and during progressive increase procedure, OLT continuing to detect whether there is error code in upstream data (205); if there is no error code during progressive increase procedure, OLT stopping the adjustment (207). Unnecessary optical power consumption in upstream data transmission in EPON system is reduced effectively, therefore power is saved. | ||||||
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