Telecom Infra Project Released GNPy Version 3.0
The update to the open-source optical planning library improves receiver modelling and adds Q-margin calculations.
Updated on Sept. 29, 2026 in Telecommunications
The Telecom Infra Project has released GNPy version 3.0, an open-source library used for route planning and modeling within optical transport networks. This version introduces refined transceiver evaluation methods and new Q-margin calculations to improve system accuracy.
Why it matters
This release enhances the precision of optical network modeling, which is essential for scaling capacity in complex fiber infrastructures. It provides engineers with more granular data to optimize spectrum propagation and channel planning across heterogeneous networks.
GNPy 3.0 introduces Q-margin calculations and a revised method for evaluating candidate transceivers. These updates provide greater accuracy in receiver modeling and include new channel numbering tools for improved spectrum propagation alignment.
The players
Telecom Infra Project
A global community of companies and organizations working to accelerate the development of open and disaggregated telecommunications technologies.
The details
GNPy is an open-source library that uses physical-layer modeling to simulate how signals behave across optical transport networks—the high-capacity infrastructure that carries data over fiber-optic cables. The version 3.0 update modifies how the library evaluates candidate transceivers, the hardware components that transmit and receive data, by incorporating more precise Q-margin calculations. These calculations determine the signal-to-noise ratio buffer required to ensure data transmission remains error-free.
Timeline
September 29, 2026: The Telecom Infra Project officially released GNPy version 3.0.
The Tech Race
GNPy sits at the center of the industry-wide move toward open, software-defined optical network planning. This release follows a pattern set by previous versions in establishing a vendor-neutral standard for modeling complex signal propagation.
Network engineers and infrastructure planners can now implement these updated models to achieve higher accuracy in their fiber and spectrum propagation planning. This update is immediately available as an open-source library for deployment in existing network design workflows.
The takeaway
The move to version 3.0 signals an ongoing effort to harden the physical-layer simulation tools required for modern optical transport. Professionals should watch for subsequent documentation updates on the library to integrate the new transceiver evaluation metrics into their existing modeling pipelines.
Further reading
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Source note: This article includes information reported by Telecompaper.
