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1.发明专利
公开(公告)号：JP2001274755A
公开(公告)日：2001-10-05
申请号：JP2001051336
申请日：2001-02-27
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DENKIN NATHAN MYRON , FEULNER MATTHIAS RICHARD , MA JIONG , WERNER DIETER , ZHU MING JUAN
IPC: H01S3/10 , H01S3/06 , H04B10/02 , H04B10/17 , H04B10/18 , H04B10/29 , H04J14/00 , H04J14/02 , H04B10/16
Abstract: PROBLEM TO BE SOLVED: To provide a system and a method for controlling reactions with respect to a power transient phenomenon in a wavelength division multiplex(WDM) network, whose signal is optically amplified during network reconfiguration or on the occurrence of a failure, when a WDM channel is added or deleted. SOLUTION: A variable band width filter circuit 500 is operated by a first prescribed band width for a first period τ0 to detect a change (power transient phenomenon) in a signal power caused by an event of a transient phenomenon and operated by a second specified band width narrower than the first prescribed band width for a period τ0+Δτ after the lapse of the first period to nearly suppress a low level signal change such as a remnant of the power transient phenomenon. Thus, the actual power transient phenomenon is maintained to start amplifier gain control based on the change in input power while the remnant is eliminated by preventing the remnant from being interpreted in mistake as an actual transient phenomenon event phenomenon.
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2.发明专利
公开(公告)号：JP2000245075A
公开(公告)日：2000-09-08
申请号：JP2000038999
申请日：2000-02-17
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DENKIN NATHAN MYRON , GOLUBCHIK ALEXANDER , SINHA BHARAT P
Abstract: PROBLEM TO BE SOLVED: To determine precisely the operational condition of a stand-by power source, by using a feedback signal as a detection signal, which is generated as a function of both a voltage signal outputted from a power source and a voltage signal supplied to load. SOLUTION: Power sources 100, 200 have voltage paths 211, 212 to load 130 and are isolated by distributed resistors Rd21, Rd22 and diodes D21, D22 having an OR (logical OR) function. The level of the voltage against the ground supplied to the load 130 through the path 121 is detected by detection paths 213 (21), 214 (22) connected to the power sources 100, 200. The power source 100 adjusts the level of the voltage between the path 211 through which the power source itself is outputting and the ground, as a function of a difference between the level or the detected voltage supplied through the detection path 213 (21) and a set voltage Vset121. Likewise, the power source 200 adjusts the level of the voltage outputted by the power source itself, as a function of a difference between the level of the detection voltage supplied through the detection path 214 (22) and a set voltage Vset122.
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公开(公告)号：DE602004001082T2
公开(公告)日：2006-11-23
申请号：DE602004001082
申请日：2004-03-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DENKIN NATHAN MYRON , LINGNER GERARD III
Abstract: A method, apparatus and system for controlling power transients in amplified optical transmission system includes, in response to the detection of a power transient in an optical signal, varying a gain of at least one amplifier to correct for a time delay in a gain response associated with a gain change in an amplifier. Alternatively, the method, apparatus and system further include in response to the detection of the power transient, adjusting the gain of at least one amplifier to correct for a change in signal power.
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公开(公告)号：DE60001444D1
公开(公告)日：2003-03-27
申请号：DE60001444
申请日：2000-09-11
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DENKIN NATHAN MYRON , FEULNER MATTHIAS RICHARD , MA JIONG , WERNER DIETER , ZHU MING JUAN
Abstract: An apparatus and method are described for controlling response to power transients in an optically amplified wavelength division multiplexed (WDM) network when WDM optical channels are added and dropped, during network reconfigurations, during failure events, and so on. In one embodiment, a variable bandwidth filter circuit operates at a first prescribed bandwidth during a first time period tau 0 to detect a change in signal power (i.e., power transient) caused by a transient event, and operates at a second prescribed bandwidth that is less than the first prescribed bandwidth after the first period of time elapses, e.g., tau 0 + INCREMENT tau , to substantially suppress low level signal variations, such as remnants of the power transient. In this way, the power transient related to the actual transient event will be preserved to trigger control circuitry, e.g., amplifier gain control based on input power changes, while the remnants will be filtered out to prevent unwanted responses by the control circuitry, e.g., remnants misinterpreted as actual transient events.
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公开(公告)号：DE69802495D1
公开(公告)日：2001-12-20
申请号：DE69802495
申请日：1998-12-04
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DENKIN NATHAN MYRON , FISHMAN DANIEL A , FANG WEI-CHIAO WILLIAM
IPC: G02F1/01 , H04B10/00 , H04B10/02 , H04L1/22 , H04M3/22 , H04Q3/52 , H04B10/08 , H04B10/24 , H04J14/02
Abstract: A protection facility is provided for use in an optical communications node that communicates with another optical communications node via first and second bi-directional communications paths respectively serving as a service path and protection path, in which a filter filters signals respectively received over the service and protection paths and generates a main signal and a complementary signal for each of the paths. A control unit then generates a Loss of Signal (LOS_A) indication for the service path if a SUM signal or DIFF signal respectively derived as a function of a sum of the main and complementary signals generated for the service path and difference between the main and complementary signals generated for the service path is less than a respective threshold value. A switch then invokes protection switching responsive to the presence of the LOS_A indication.
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Patent Agency Ranking
公开(公告)号：DE69802495T2
公开(公告)日：2002-06-27
申请号：DE69802495
申请日：1998-12-04
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DENKIN NATHAN MYRON , FISHMAN DANIEL A , FANG WEI-CHIAO WILLIAM
IPC: G02F1/01 , H04B10/00 , H04B10/02 , H04L1/22 , H04M3/22 , H04Q3/52 , H04B10/08 , H04B10/24 , H04J14/02
Abstract: A protection facility is provided for use in an optical communications node that communicates with another optical communications node via first and second bi-directional communications paths respectively serving as a service path and protection path, in which a filter filters signals respectively received over the service and protection paths and generates a main signal and a complementary signal for each of the paths. A control unit then generates a Loss of Signal (LOS_A) indication for the service path if a SUM signal or DIFF signal respectively derived as a function of a sum of the main and complementary signals generated for the service path and difference between the main and complementary signals generated for the service path is less than a respective threshold value. A switch then invokes protection switching responsive to the presence of the LOS_A indication.
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公开(公告)号：CA2344869A1
公开(公告)日：2001-12-22
申请号：CA2344869
申请日：2001-04-23
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DENKIN NATHAN MYRON , LIN WENHUA , SHEHADEH FATIMAH
IPC: H01S3/30 , H01S3/06 , H04B10/02 , H04B10/17 , H04B10/18 , H04B10/29 , H04J14/00 , H04J14/02 , H04B10/08
Abstract: A unique sensor is used to detect a transmission impairment that may ha ve affected incoming optical channel signals. The sensor, more specifically, selects a group of the incoming channel signals and generates a first power signal, P0, over the selected group of signals and generates a second power signals, P1, over a weighted version of the selected group of channel signals. The sensor then generates, as a function of the first and second power signals, P0 and P1, a signal indicative of whether the particular transmission impairment affected the levels of individual ones of the incomi ng channel signals. If so, then control apparatus offsets the impairment accordingly.
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公开(公告)号：CA2298187A1
公开(公告)日：2000-08-17
申请号：CA2298187
申请日：2000-02-07
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DENKIN NATHAN MYRON , SINHA BHARAT P , GOLUBCHIK ALEXANDER
Abstract: The monitoring of regulated redundant power supplies is enhanced by returning to each power supply a feedback (sensed) voltage signal that is indicative of the voltage level that the respective power supply is outputting and the voltage level supplied to a system load. In one embodiment, a feedback signal that is supplied to a power supply as the sensed signal is derived using a voltage divider network across the output of the power supply and the common connection at which the outputs of the power supplies are "Ored" for delivery to the system load. A power supply then regulates its output voltage as a function of the level of the feedback signal and the level of a respective preset signal.
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公开(公告)号：CA2331954C
公开(公告)日：2006-10-31
申请号：CA2331954
申请日：2001-01-22
Applicant: LUCENT TECHNOLOGIES INC
Inventor： FEULNER MATTHIAS RICHARD , DENKIN NATHAN MYRON , MA JIONG , WERNER DIETER , ZHU MINGJUAN
Abstract: An apparatus and method are described for controlling response to power transients in an optically amplified wavelength division multiplexed (WDM) network when WDM optical channels are added and dropped, during network reconfigurations, during failure events, and so on. In one embodiment, a variable bandwidth filter circuit operates at a first prescribed bandwidth during a first time period io to detect a change in signal power (i.e;., power transient) caused by a transient event, and operates at a second prescribed bandwidth that is less than the first prescribed bandwidth after the first period of time elapses, e.g., .TAU.0 + .DELTA..TAU. to substantially suppress low level signal variations, such as remnants of the power transient. In this way, the power transient related to the actual transient event will be preserved to trigger control circuitry, e.g., amplifier gain control base d on input power changes, while the remnants will be filtered out to prevent unwanted responses by the control circuitry, e.g., remnants misinterpreted as actual transient events.
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公开(公告)号：CA2344869C
公开(公告)日：2005-09-06
申请号：CA2344869
申请日：2001-04-23
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DENKIN NATHAN MYRON , SHEHADEH FATIMAH , LIN WENHUA
IPC: H01S3/30 , H01S3/06 , H04B10/02 , H04B10/17 , H04B10/18 , H04B10/29 , H04J14/00 , H04J14/02 , H04B10/08
Abstract: A unique sensor is used to detect a transmission impairment that may ha ve affected incoming optical channel signals. The sensor, more specifically, selects a group of the incoming channel signals and generates a first power signal, P0, over the selected group of signals and generates a second power signals, P1, over a weighted version of the selected group of channel signals. The sensor then generates, as a function of the first and second power signals, P0 and P1, a signal indicative of whether the particular transmission impairment affected the levels of individual ones of the incomi ng channel signals. If so, then control apparatus offsets the impairment accordingly.
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