An optical fiber detection method includes: selecting an optical fiber path required to be detected and setting relevant parameters of an optical fiber detection device related to the optical fiber path (S10); sending a detection starting instruction to the optical fiber detection device for the optical fiber detection device to detect the optical fiber path according to the detection starting instruction (S20); receiving a result of the detection performed by the optical fiber detection device on the optical fiber path, and analyzing the result of the detection to acquire the working status of the optical fiber path (S30). A network element management system and an optical fiber detection device and platform are also described.

A method includes providing run-time optical 5G mobile fronthaul MFH topology re-configurability through software-defined control of both optical circuit switches and electrical packet switches readily accommodating unpredictable traffic patterns and low latency optical by-pass based device-to-device connectivity. The providing includes employing an optical any-to-any switch for wavelength-tunable and fixed-wavelength optical transceivers.

An optical transmission apparatus, includes: a reference-wavelength light source configured to generate reference light; a reference wavemeter configured to be calibrated by using the reference light; a receiver configured to receive measurement light transmitted from another optical transmission apparatus and wavelength information about the measurement light; and a controller, wherein the controller configured to: detect error between a first wavelength of the measurement light detected by using the reference wavemeter, and a second wavelength included in the wavelength information; and send error information that represents the error to the another optical transmission apparatus.

Systems and methods include obtaining a network state of a network having a plurality of nodes interconnected by a plurality of links and with services configured between the plurality of nodes on the plurality of links; utilizing a reinforcement learning engine to analyze the services and the network state to determine modifications to one or more candidate services of the services to increase a value of the network state; and, responsive to implementation of the modification to the one or more candidate services, updating the network state based thereon. The modifications can include changes to any of routing, modulation, and spectral assignment to the one or more candidate services.

An optical network includes an arrangement of optical nodes. An optical node of the arrangement, and corresponding method, perform optical connectivity discovery and negotiation-less optical fiber continuity verification in the optical network. An overall topology of optical connectivity provisioned for the arrangement is discovered by the optical node based on messages received from a management network communicatively coupling the optical nodes to each other. The optical node synchronizes, temporally and sequentially, with the other optical nodes based on the messages received, assigns fiber of the overall topology, based on a verification sequencing method, to verification slots of a verification sequence, and verifies continuity of fiber according to the verification slots of the verification sequence. The discovery, synchronization, and assignment operations enable the optical node and peer node to perform the optical fiber continuity verification in a symmetric, decentralized, and negotiation-less manner.

Disclosed is a power optical transmission route and spectrum allocation method based on an elastic optical network, including: determining a set of alternative routes among nodes of a power communication network according to power communication topology; coloring the routes for classification, determining a total number of colors allocated, and determining the coloring of the set of alternative routes according to a hop count of route nodes and the total number of colors of spectrums; proportionally classifying the spectrums into blocks according to the total number of colors allocated and the number of route classes allocated to each color; selecting an optimal solution from the set of alternative routes by comprehensively considering a switching hop count and a network-wide risk balance value, to determine a route to execute service allocation; and determining positions of spectrum blocks according to the route selected and the allocated colors, to complete spectrum allocation.

Systems and methods include determining a current state of a network; determining a new state for the network having an improved cost relative to the current state; determining a defragmentation plan to move the network from the current state to the new state, the defragmentation plan including a sequence of steps; and, responsive to an event that presents an opportunity, implementing one or more steps of the sequence of steps. The implementing is conditioned on occurrence of the opportunity.

Systems and methods for coordinating an optical layer and a packet layer in a network, include a Software Defined Networking (SDN) Internet Protocol (IP) application configured to implement a closed loop for analytics, recommendations, provisioning, and monitoring, of a plurality of routers in the packet layer; and a variable capacity application configured to determine optical path viability, compute excess optical margin, and recommend and cause capacity upgrades and downgrades, by communicating with a plurality of network elements in the optical layer, wherein the SDN IP application and the variable capacity application coordinate activity therebetween based on conditions in the network. The activity is coordinated based on underlying capacity changes in the optical layer and workload changes in the packet layer.

An example system includes a first network device having first circuitry. The first network device is configured to perform operations including receiving data to be transmitted to a second network device over an optical communications network, and transmitting first information and second information to the second device. The first information is indicative of the data, and is transmitted using a first communications link of the optical communications network and using a first subset of optical subcarriers. The second information is indicative of the data, and is transmitted using a second communications link of the optical communications network and using a second subset of optical subcarriers. The first subset of optical subcarriers is different from the second subset of optical subcarriers.

An example system includes a first network device having first circuitry. The first network device is configured to perform operations including receiving data to be transmitted to a second network device over an optical communications network, and transmitting first information and second information to the second device. The first information is indicative of the data, and is transmitted using a first communications link of the optical communications network and using a first subset of optical subcarriers. The second information is indicative of the data, and is transmitted using a second communications link of the optical communications network and using a second subset of optical subcarriers. The first subset of optical subcarriers is different from the second subset of optical subcarriers.