公开(公告)号：US11962401B2

公开(公告)日：2024-04-16

申请号：US17400776

申请日：2021-08-12

Applicant: Ciena Corporation

Inventor： Jean-Luc Archambault ,  Edward Chen ,  Paul Chedore ,  Choudhury A. Al Sayeed ,  David C. Bownass ,  David Miedema

IPC: H04B10/073 ,  H04J14/02

CPC classification number: H04J14/0212 ,  H04B10/073 ,  H04J14/0209

Abstract: Systems and methods for conducting various types of Connection Validation (CV) are provided for reducing the overall CV scan time of regular CV scans. A Reconfigurable Optical Add/Drop Multiplexer (ROADM), according to one implementation includes at least one degree component; at least one add/drop component; a plurality of fibers interconnecting the at least one degree component and/or the at least one add/drop component; and a controller configured to, responsive to any of ongoing operation and connection of one or more fibers of the plurality of fibers, cause a Connection Validation (CV) scan in the ROADM that cycles through the one or more fibers, attain a desired cycle time for the CV scan through one or more techniques, and determine one or more of connectivity and whether fiber loss is within expectations, based on the CV scan.

公开(公告)号：US20240080093A1

公开(公告)日：2024-03-07

申请号：US17901786

申请日：2022-09-01

Applicant: Ciena Corporation

Inventor： Choudhury A. Al Sayeed

IPC: H04B10/03 ,  H04B10/079

CPC classification number: H04B10/03 ,  H04B10/07953 ,  H04B10/0797

Abstract: Systems and methods for auto-squelching problematic channels of an optical spectrum and replacing them with Amplified Spontaneous Emission (ASE) channel holders are provided. A method is provided according to one implementation. In response to analyzing optical signals propagating in an optical line system, the method includes the step of determining whether one or more channels of a spectrum of the optical signals are problematic. The one or more problematic channels are determined to be problematic based on the severity of a negative impact that the one or more problematic channels have on spectrum health. The method also includes the step of auto-squelching the one or more problematic channels and replacing the one or more problematic channels with one or more Amplified Spontaneous Emission (ASE) channel holders.

公开(公告)号：US11784738B2

公开(公告)日：2023-10-10

申请号：US17851885

申请日：2022-06-28

Applicant: Ciena Corporation

Inventor： Choudhury A. Al Sayeed ,  Edward Chen

IPC: H04J14/02 ,  H04B10/079 ,  H04B10/071 ,  H04B10/27

CPC classification number: H04J14/0202 ,  H04B10/071 ,  H04B10/07953 ,  H04B10/07955 ,  H04B10/27 ,  H04J14/0221

Abstract: Differentiating traffic signals from filler channels in optical networks includes obtaining power measurements of optical spectrum on an optical section in the optical network; analyzing the power measurements to differentiate signal type between traffic signals and Amplified Stimulated Emission (ASE) channel holders; and applying appropriate treatment to the optical spectrum based on the signal type. The analyzing is performed locally without any notification from upstream nodes of the optical spectrum.

公开(公告)号：US20220329341A1

公开(公告)日：2022-10-13

申请号：US17851885

申请日：2022-06-28

Applicant: Ciena Corporation

Inventor： Choudhury A. Al Sayeed ,  Edward Chen

IPC: H04J14/02 ,  H04B10/071 ,  H04B10/079 ,  H04B10/27

Abstract: Differentiating traffic signals from filler channels in optical networks includes obtaining power measurements of optical spectrum on an optical section in the optical network; analyzing the power measurements to differentiate signal type between traffic signals and Amplified Stimulated Emission (ASE) channel holders; and applying appropriate treatment to the optical spectrum based on the signal type. The analyzing is performed locally without any notification from upstream nodes of the optical spectrum.

公开(公告)号：US11456814B2

公开(公告)日：2022-09-27

申请号：US17315879

申请日：2021-05-10

Applicant: Ciena Corporation

Inventor： Choudhury A. Al Sayeed ,  David C. Bownass ,  David Atkinson ,  Scott Kohlert

IPC: H04J14/02 ,  H04B10/071 ,  H04B10/079 ,  H04B10/27

Abstract: Automatic optical link calibration systems and methods include an optical node with an Optical Add-Drop Multiplexer (OADM) multiplexer including a channel holder source; an optical amplifier connected to the OADM multiplexer and to a fiber span; an Optical Channel Monitor (OCM) configured to monitor optical spectrum before and after the optical amplifier; and a controller configured to obtain data associated with the fiber span including measurements from the OCM, determine settings of the channel holder source needed to meet a target launch power profile for the fiber span, and configure the channel holder source based on the determined settings.

公开(公告)号：US20220256263A1

公开(公告)日：2022-08-11

申请号：US17626379

申请日：2020-06-25

Applicant: Ciena Corporation

Inventor： Choudhury A. Al Sayeed ,  Radmila Kovacevic ,  Edward Chen ,  David Miedema

IPC: H04Q11/00 ,  H04J14/02

Abstract: Systems and methods include, responsive to provisioning a media channel (52) on a degree, wherein the media channel (52) is a contiguous portion of optical spectrum supporting N channels, N is greater than 1, causing allocation of optical filter bandwidth in an optical multiplexing/demultiplexing device for M channels (56) in the media channel (50), where M is less than N; causing provisioning of the M channels (56) in the media channel (50); and causing configuration of channel holders in the media channel from a channel holder source (20) for a part of the portion of the optical spectrum unoccupied by the M channels (56).

公开(公告)号：US20220255282A1

公开(公告)日：2022-08-11

申请号：US17173844

申请日：2021-02-11

Applicant: Ciena Corporation

Inventor： Choudhury A. Al Sayeed ,  Bing Liu ,  Damian Flannery ,  Jean-Luc Archambault

IPC: H01S3/067 ,  H01S3/10

Abstract: Optical line amplifiers with on-board controllers and supervisory devices for controlling optical line amplifiers are provided for controlling bootstrap or power-up procedures when optical line amplifiers are initially installed in an optical communication network. The controllers may include non-transitory computer-readable medium configured to store computer logic having instructions that, when executed, cause one or more processing devices to block an input to one or more gain units of the line amplifier and cause the line amplifier to operate in an Amplified Spontaneous Emission (ASE) mode. In response to a detection of a valid power level of the line amplifier, the instructions can further cause the one or more processing devices to switch the line amplifier from the ASE mode to a regular mode and unblock the input to the one or more gain units of the line amplifier to allow operation of the line amplifier in the regular operating mode.

公开(公告)号：US10985838B1

公开(公告)日：2021-04-20

申请号：US16992697

申请日：2020-08-13

Applicant: Ciena Corporation

Inventor： Choudhury A. Al Sayeed ,  David J. Miedema ,  David Atkinson

IPC: H04B10/08 ,  H04B10/079 ,  H04B10/564

Abstract: Systems and methods for measuring accumulated power losses over a fiber link are described in the present disclosure. According to one embodiment, a method includes the step of measuring accumulated losses over a fiber link. The method also includes the step of at least partially compensating for the measured accumulated losses. In response to determining that there is a compensation shortfall with respect to the accumulated losses, the method includes the step of transmitting the compensation shortfall to one or more downstream controllers.

公开(公告)号：US10826601B2

公开(公告)日：2020-11-03

申请号：US16248882

申请日：2019-01-16

Applicant: Ciena Corporation

Inventor： Vipul Bhatnagar ,  Paul Chedore ,  Choudhury A. Al Sayeed ,  Scott Kohlert ,  David C. Bownass

IPC: H04B10/032 ,  H04B10/25 ,  H04Q11/00

Abstract: An Optical Protection Switch (OPS) includes a splitter connected to a transmitted input and a path continuity monitor transmitter and configured to output the transmitted input with a path continuity monitor signal to two paths; a switch connected to a receiver output and configured to provide one of two receiver inputs each from one of the two paths based on a setting of the switch; and one or more path continuity monitor receivers connected to the two receiver inputs and configured to detect a corresponding path continuity monitor signal from a complementary OPS, wherein the setting of the switch is set based upon the received path continuity monitor signals. The one or more path continuity monitor receivers each have a narrow optical bandwidth relative to an overall optical bandwidth of the transmitted input.

公开(公告)号：US10547404B1

公开(公告)日：2020-01-28

申请号：US16189283

申请日：2018-11-13

Applicant: Ciena Corporation

Inventor： Choudhury A. Al Sayeed ,  David C. Bownass ,  Dave Atkinson ,  Scott Kohlert

IPC: H04B10/071 ,  H04J14/02 ,  H04B10/079 ,  H04B10/27

Abstract: Automatic optical link calibration systems and methods include, in an optical section with an Optical Add-Drop Multiplexer (OADM) multiplexer, an OADM demultiplexer, and zero or more in-line optical amplifiers between the OADM multiplexer and the OADM demultiplexer, wherein the optical section includes integrated measurement equipment, and wherein the OADM multiplexer and the OADM demultiplexer have a route and select architecture, obtaining measurement data from the integrated measurement equipment subsequent to turn up; determining an optimal target launch power profile per fiber span in the optical section based on the measurement data; configuring channel holders at the OADM multiplexer to meet the optimal target launch power profile per fiber span; and calibrating each fiber span to determine settings of equipment at the OADM multiplexer, the OADM demultiplexer, and the zero or more in-line optical amplifiers.