Ciena

About: Ciena is a company organization based out in Hanover, Maryland, United States. It is known for research contribution in the topics: Signal & Node (networking). The organization has 1259 authors who have published 1557 publications receiving 25989 citations.

Optimization of photonic services with colorless and directionless architecture

Abstract: A method, in a node operating in a network with a control plane, to optimize wavelength retuning on service redials, includes detecting a failure on a link associated with the node; and, for each affected connections on the link, sending a respective release message to an associated originating node via the control plane, the release message including a protect path and a wavelength, wherein the release message is utilized by the associated originating node to redial the affected connections with the protect path and the wavelength determined by the node, to minimize wavelength retuning on the affected connections.

Integrity check optimization systems and methods in live connectivity frames

Abstract: A method, a network element, and a network include determining an authentication mechanism between two nodes in a network path; operating the network path; performing connectivity check between the two nodes in the network path; and authenticating specific frames in the connectivity check between the two nodes with the authentication mechanism responsive to the specific frames affecting a state of the network path. The frames can be Bidirectional Forwarding Detection (BFD), Continuity Check Messages (CCMs), etc. Advantageously, the method, network element, and network reduce the computational load of providing authentication while maintaining secure authentication for important frames, i.e., ones that affect the state of the network path.

Systems and methods for selecting efficient messaging between services

Abstract: Systems and methods for selecting efficient messaging to a service include operating the service in a one of a Microservices Architecture (MSA) and a Service-Oriented Architecture (SOA); providing messaging protocols and serialization formats supported by the service for a second service to determine the efficient messaging to the service; and communicating with the second service via a selected messaging protocol and a selected serialization format based on the providing. Each of the service and the second service is a self-contained unit of functionality that is combined with other services to provide functionality of a large software application.

Handling channel holder failures in channel holder equipped optical links

Abstract: An Optical Add/Drop Multiplexer (OADM) node includes a plurality of degrees each having a multiplexer and a demultiplexer configured to interface to an optical section in an optical network; one or more channel holder sources configured to connect to corresponding multiplexers of the plurality of degrees and provide optical power at unoccupied portions of optical spectrum on the corresponding optical section to present a full-fill loading condition thereon; and control circuitry configured to locally detect a failure on the one or more channel holder sources affecting an upstream degree, and switch unoccupied optical spectrum filled with the channel holder signals from one or more downstream degrees to the upstream degree.

Systems and methods for providing a three-port reconfigurable optical add-drop multiplexer with an improved edge profile and add/drop flexibility

Abstract: The technology described herein provides a low-cost three-port reconfigurable optical add-drop multiplexer (ROADM) with an improved edge profile and add/drop flexibility. The technology described herein further provides a tunable spectral filter utilizing two sets of gratings and lenses and a two-axis micro-electro-mechanical system (MEMS) mirror with a selectively shaped cut-out disposed within the middle of the collimated optical path.