ADVA Optical Networking has filed a patent for a transparent optical overlay network that enables end-to-end optical spectrum services across multiple transparent optical network domains. The network includes network domain interface devices (NDIDs) at domain boundaries, which monitor and adjust incoming and outgoing optical signals. An overlay network controller manages and controls the optical spectrum services and collects telemetry data for service characterization. GlobalData’s report on ADVA Optical Networking gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on ADVA Optical Networking, data center optical networking was a key innovation area identified from patents. ADVA Optical Networking's grant share as of September 2023 was 74%. Grant share is based on the ratio of number of grants to total number of patents.

Transparent optical overlay network for end-to-end optical spectrum services

Source: United States Patent and Trademark Office (USPTO). Credit: ADVA Optical Networking SE

A recently filed patent (Publication Number: US20230318731A1) describes a transparent optical overlay network that enables end-to-end optical spectrum services across multiple transparent optical network domains. The network includes network domain interface devices (NDIDs) located at the boundaries between adjacent domains. These NDIDs monitor and adjust incoming and outgoing optical signals between domains. An overlay network controller manages and controls the optical spectrum services by controlling the NDIDs and collecting telemetry data for service characterization.

The overlay network controller is designed to process telemetry data, such as Q-values, Bit Error ratios, and signal power level data, collected from the NDIDs. This data is used for continuous long-term performance monitoring of the optical spectrum services and to ensure conformance with service level agreement (SLA) parameters. The NDIDs themselves have signal monitoring and adjustment capabilities. They monitor incoming and outgoing optical signals, including signal power, power spectral density, OSNR, GSNR, chromatic dispersion, and PMD. The NDIDs can also perform channel probing and provide telemetry data for spectrum characterization, long-term monitoring, and SLA policing.

The NDIDs have input and output signal adjustment units that can shutdown, attenuate, amplify, filter, switch, equalize, and pre-emphasize optical signals in response to control signals from the controller. The output signal adjustment unit includes an EDFA array for signal amplification and a variable optical attenuator (VOA) array. The input signal adjustment unit may include N:M wavelength selective switches for switching or routing incoming optical signals.

The patent also describes the connection between the NDIDs and the overlay network controller. The NDIDs have a control and data interface for communication with the controller. Additionally, the transparent optical network domains have associated domain controllers that exchange information with the overlay network controller about network topology, resources, and services available to the overlay network.

In summary, this patent proposes a transparent optical overlay network that enables end-to-end optical spectrum services across multiple domains. The network includes NDIDs for monitoring and adjusting optical signals between domains, an overlay network controller for managing and controlling the services, and telemetry data collection for service characterization. The NDIDs have signal monitoring and adjustment capabilities, and the network ensures conformance with SLA parameters.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.