Agnostic QoT Probing via Receiver-Side ASE Loading in a Production Metro for Transparent Datacenter Exchange

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Publication Date: 3/15/2026

Event: OFC 2026

Reference: M4A.2: 103, 2026

Authors: Renato Ambrosone, NEC Laboratories America, Inc., Politecnico di Torino; Andrea D’Amico, NEC Laboratories America, Inc.; Stefano Straullu, LINKS Foundation; Matteo Colantonio, Consortium GARR; Gloria Vuagnin, Consortium GARR; Paolo Bolletta, Consortium GARR; Francesco Aquilino, LINKS Foundation; Vittorio Curri, Politecnico di Torino

Abstract: We demonstrate agnostic QoT probing for datacenter exchange in a metro network via receiver-side ASE loading. Knowing BER telemetry and the progressive ASEload, the device estimates GSNR, enabling IPoWDM operations and digital-twin calibration.

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