Patents by Inventor Loren S. Berg
Loren S. Berg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11553259Abstract: Systems and methods include, for operation on an optical fiber in an optical network with the optical fiber having extended optical spectrum that include a plurality of bands including at least the C-band and one or more additional bands, segmenting the plurality of bands by distance based on different transmission specifications for the plurality of bands based on fiber types and amplifiers used for corresponding bands; and placing one or more channels on the optical fiber in a corresponding band of the plurality of bands based on a distance between nodes associated with each of the one or more channels. The segmenting is based on a metric that is a function of fiber type of the optical fiber and amplifier performance for amplifiers used in the plurality of bands.Type: GrantFiled: December 6, 2021Date of Patent: January 10, 2023Assignee: Ciena CorporationInventors: Michael Y. Frankel, David W. Boertjes, Loren S. Berg
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Publication number: 20220132228Abstract: Systems and methods include, for operation on an optical fiber in an optical network with the optical fiber having extended optical spectrum that include a plurality of bands including at least the C-band and one or more additional bands, segmenting the plurality of bands by distance based on different transmission specifications for the plurality of bands based on fiber types and amplifiers used for corresponding bands; and placing one or more channels on the optical fiber in a corresponding band of the plurality of bands based on a distance between nodes associated with each of the one or more channels. The segmenting is based on a metric that is a function of fiber type of the optical fiber and amplifier performance for amplifiers used in the plurality of bands.Type: ApplicationFiled: December 6, 2021Publication date: April 28, 2022Inventors: Michael Y. Frankel, David W. Boertjes, Loren S. Berg
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Patent number: 11196504Abstract: A method includes establishing an extended optical spectrum having multiple channels for transmission of signals within an optical network. The extended optical spectrum includes at least the C-band (i.e., 1530 nm to 1565 nm) plus one or more sub-bands each having a range of wavelengths including at least one optical channel outside the range of the C-band. The method also includes segmenting the extended optical spectrum into a local band and an express band having different transmission specifications. The local band is configured for transmission of signals between nodes having a relatively shorter distance therebetween and the express band is configured for transmission of signals between nodes having a relatively longer distance therebetween. A combination of the sub-bands covers less than the L-band having a range of wavelengths from 1565 nm to 1625 nm and/or less than the S-band having a range of wavelengths from 1460 nm to 1530 nm.Type: GrantFiled: October 28, 2020Date of Patent: December 7, 2021Assignee: Ciena CorporationInventors: Michael Y. Frankel, David W. Boertjes, Loren S. Berg
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Patent number: 9973295Abstract: A method, an optical node, and an optical network include a power controller configured to bring channels in-service in parallel over multiple cascaded optical nodes quickly, efficiently, and in a non-service affecting manner. The method, node, and network utilize multiple states of a control loop that maintains a stable response in downstream optical nodes as channels are added in parallel. Further, the power controller is configured to operate independently alleviating dependencies on other power controllers and removing the need for coordination between power controllers. The method, node, and network provide efficient turn up of dense wave division multiplexing (DWDM) services which is critical to optical layer functionality including optical layer restoration.Type: GrantFiled: January 20, 2016Date of Patent: May 15, 2018Assignee: Ciena CorporationInventors: Choudhury Al Sayeed, David C. Bownass, Loren S. Berg, David W. Boertjes
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Patent number: 9485013Abstract: A method for optical dark section conditioning includes determining a section in an optical network is a dark section that includes connected fiber spans that are functional with no traffic carrying channels present thereon; and causing generation of at least one of broadband noise and a signal at a head end of the dark section. An apparatus configured to perform optical dark section conditioning includes logic configured to determine a section in an optical network is a dark section that includes connected fiber spans that are functional with no traffic carrying channels present thereon; and logic configured to cause generation of at least one of broadband noise and a signal at a head end of the dark section.Type: GrantFiled: November 13, 2015Date of Patent: November 1, 2016Assignee: Ciena CorporationInventors: Choudhury A. Al Sayeed, David Miedema, Loren S. Berg, Dave C. Bownass
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Patent number: 9419708Abstract: A method of analysing performance of an optical fiber link. As a preliminary step, a reference trace indicative of a distributed optical performance of the optical fiber link is derived. During in-service operation of the optical fiber link, an Optical Time Domain Reflectometry (OTDR) sub-system measures an OTDR trace with Raman amplification ON, and a real-time cumulative Raman Gain profile of the optical fiber link is calculated based on the reference trace and the measured OTDR trace.Type: GrantFiled: September 4, 2014Date of Patent: August 16, 2016Assignee: Ciena CorporationInventors: Mohammad Mehdi Mansouri Rad, David C. Bownass, Loren S. Berg, David W. Boertjes, Jean-Luc Archambault
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Patent number: 9344191Abstract: A method, a controller, and an optical section include performing an analysis to determine an amount of power offset on any in-service channels in an optical section due to a capacity change with a channel; defining a step size to ensure the capacity change does not exceed an offset limit based on the analysis; performing the capacity change in one or more iterations using the step size to limit the capacity change; and performing an optimization between each of the one or more iterations to adjust amplifier gains in the optical section to compensate for offsets on the in-service channels caused by a previous iteration.Type: GrantFiled: October 31, 2013Date of Patent: May 17, 2016Assignee: Ciena CorporationInventors: Choudhury A. Al Sayeed, Mohammad Mehdi Mansouri Rad, Dave C. Bownass, Loren S. Berg
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Publication number: 20160134390Abstract: A method, an optical node, and an optical network include a power controller configured to bring channels in-service in parallel over multiple cascaded optical nodes quickly, efficiently, and in a non-service affecting manner. The method, node, and network utilize multiple states of a control loop that maintains a stable response in downstream optical nodes as channels are added in parallel. Further, the power controller is configured to operate independently alleviating dependencies on other power controllers and removing the need for coordination between power controllers. The method, node, and network provide efficient turn up of dense wave division multiplexing (DWDM) services which is critical to optical layer functionality including optical layer restoration.Type: ApplicationFiled: January 20, 2016Publication date: May 12, 2016Inventors: Choudhury AL SAYEED, David C. BOWNASS, Loren S. BERG, David W. BOERTJES
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Publication number: 20160072576Abstract: A method of analysing performance of an optical fiber link. As a preliminary step, a reference trace indicative of a distributed optical performance of the optical fiber link is derived. During in-service operation of the optical fiber link, an Optical Time Domain Reflectometry (OTDR) sub-system measures an OTDR trace with Raman amplification ON, and a real-time cumulative Raman Gain profile of the optical fiber link is calculated based on the reference trace and the measured OTDR trace.Type: ApplicationFiled: September 4, 2014Publication date: March 10, 2016Applicant: CIENA CORPORATIONInventors: Mohammad Mehdi Mansouri RAD, David C. BOWNASS, Loren S. BERG, David W. BOERTJES, Jean-Luc ARCHAMBAULT
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Publication number: 20160072575Abstract: A method for optical dark section conditioning includes determining a section in an optical network is a dark section that includes connected fiber spans that are functional with no traffic carrying channels present thereon; and causing generation of at least one of broadband noise and a signal at a head end of the dark section. An apparatus configured to perform optical dark section conditioning includes logic configured to determine a section in an optical network is a dark section that includes connected fiber spans that are functional with no traffic carrying channels present thereon; and logic configured to cause generation of at least one of broadband noise and a signal at a head end of the dark section.Type: ApplicationFiled: November 13, 2015Publication date: March 10, 2016Inventors: Choudhury A. AL SAYEED, David MIEDEMA, Loren S. BERG, Dave C. BOWNASS
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Patent number: 9276696Abstract: A method, an optical node, and an optical network include a power controller configured to bring channels in-service in parallel over multiple cascaded optical nodes quickly, efficiently, and in a non-service affecting manner. The method, node, and network utilize multiple states of a control loop that maintains a stable response in downstream optical nodes as channels are added in parallel. Further, the power controller is configured to operate independently alleviating dependencies on other power controllers and removing the need for coordination between power controllers. The method, node, and network provide efficient turn up of dense wave division multiplexing (DWDM) services which is critical to optical layer functionality including optical layer restoration.Type: GrantFiled: October 19, 2012Date of Patent: March 1, 2016Assignee: Ciena CorporationInventors: Choudhury A. Al Sayeed, David C. Bownass, Loren S. Berg, David W. Boertjes
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Patent number: 9252913Abstract: Embodiments of the disclosure are directed to optical dark section conditioning. An embodiment generates at least one of a broadband noise or signal at the head end of a section for a first module of the section; and operates all other modules of the section in gain control mode.Type: GrantFiled: May 6, 2013Date of Patent: February 2, 2016Assignee: Ciena CorporationInventors: Choudhury A. Al Sayeed, David Miedema, Loren S. Berg, Dave C. Bownass
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Publication number: 20150117858Abstract: A method, a controller, and an optical section include performing an analysis to determine an amount of power offset on any in-service channels in an optical section due to a capacity change with a channel; defining a step size to ensure the capacity change does not exceed an offset limit based on the analysis; performing the capacity change in one or more iterations using the step size to limit the capacity change; and performing an optimization between each of the one or more iterations to adjust amplifier gains in the optical section to compensate for offsets on the in-service channels caused by a previous iteration.Type: ApplicationFiled: October 31, 2013Publication date: April 30, 2015Applicant: CIENA CORPORATIONInventors: Choudhury A. AL SAYEED, Mohammad Mehdi Mansouri Rad, Dave C. BOWNASS, Loren S. BERG
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Publication number: 20140328583Abstract: Embodiments of the disclosure are directed to optical dark section conditioning. An embodiment generates at least one of a broadband noise or signal at the head end of a section for a first module of the section; and operates all other modules of the section in gain control mode.Type: ApplicationFiled: May 6, 2013Publication date: November 6, 2014Applicant: Ciena CorporationInventors: Choudhury A. AL SAYEED, David Miedema, Loren S. Berg, Dave C. Bownass
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Publication number: 20140112660Abstract: A method, an optical node, and an optical network include a power controller configured to bring channels in-service in parallel over multiple cascaded optical nodes quickly, efficiently, and in a non-service affecting manner. The method, node, and network utilize multiple states of a control loop that maintains a stable response in downstream optical nodes as channels are added in parallel. Further, the power controller is configured to operate independently alleviating dependencies on other power controllers and removing the need for coordination between power controllers. The method, node, and network provide efficient turn up of dense wave division multiplexing (DWDM) services which is critical to optical layer functionality including optical layer restoration.Type: ApplicationFiled: October 19, 2012Publication date: April 24, 2014Applicant: CIENA CORPORATIONInventors: Choudhury A. AL SAYEED, David C. BOWNASS, Loren S. BERG, David W. BOERTJES
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Publication number: 20030058497Abstract: An all-optical switching site for extending a range and agility of an all-optical WDM/DWDM network, by controlling signal intensity balance at each link and performing adaptive dispersion compensation for each dropped channel. The all-optical switching site includes a variable optical attenuator (VOA) for each output channel and an adaptive dispersion compensation module (ADCM) in each drop path. The VOAs of output channels transported by an output optical fiber link are controlled with downstream feedback to adjust channel signal intensity balance. The ADCM comprises an adaptive controller and a dispersion compensation element adapted to apply a different amount of dispersion compensation to a channel it receives. The adaptive controller receives feedback from a receiver or a signal analyzer, in order to optimize the dispersion compensation. The all-optical switching site reduces network operational cost, improves network reach and significantly enhances network agility.Type: ApplicationFiled: September 27, 2001Publication date: March 27, 2003Applicant: Nortel Networks LimitedInventors: David W. Park, Marc M. Veilleux, Martin Agnew, Nigel Baker, Loren S. Berg
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Patent number: 6236499Abstract: A modular bidirectional optical amplification system includes a multiwavelength dual amplifier building block, a multiwavelength unidirectional booster amplifier BB, a unidirectional and a bidirectional Optical Service Channel (OSC) BB, an Intelligent Optical Terminal Accessway (IOTA) module, and an interleaved filter BB. The dual amplifier BB is available in a C-band version, an E-band version and a hybrid version, and provides unidirectional or bidirectional multichannel amplification. The booster amplifier is available in a C-band version, an E-band version and in a booster plus variant;. one for the C-band and one for E-band. The unidirectional and bidirectional OSC BBs provide a means for OAM&P functionality to the optical network. The IOTA BB provides multiplexing and demultiplexing, and the filter BB provides separation of the signal into grid-1 and grid-2 channels.Type: GrantFiled: April 15, 1999Date of Patent: May 22, 2001Assignee: Nortel Networks LimitedInventors: Loren S. Berg, Mark R. Hinds, Robert W. Keys, Gregory D. May, Alan G. Solheim, Stephane St-Laurent