Flex-grid WSS filters in ROADMs can degrade signal quality of transmission (QoT) due to single-sided (SS) and dual-sided (DS) passband narrowing from frequency deviations or multi-carrier transceivers. Moreover, filtering QoT penalty depends on the relative placement of ASE and filters and on the implementation-dependent capabilities of the DSP receiver. We first validate an already published model based on time-consuming experimental calibration on commercial devices including SS filter response. We then present and validate using numerical simulations a faster analytical approach based on the MMSE theory suitable for modern networks digital twins and planners.
Observation and Modeling of Filtering Penalties in Optical Switched Networks / Virgillito, Emanuele; Straullu, Stefano; Castoldi, Andrea; Rodriguez, Fransisco M.; Pastorelli, Rosanna; Curri, Vittorio. - ELETTRONICO. - (2024), pp. 1-4. (Intervento presentato al convegno 24th International Conference on Transparent Optical Networks (ICTON) tenutosi a Bari (Italy) nel 14-18 July 2024) [10.1109/icton62926.2024.10647862].
Observation and Modeling of Filtering Penalties in Optical Switched Networks
Virgillito, Emanuele;Curri, Vittorio
2024
Abstract
Flex-grid WSS filters in ROADMs can degrade signal quality of transmission (QoT) due to single-sided (SS) and dual-sided (DS) passband narrowing from frequency deviations or multi-carrier transceivers. Moreover, filtering QoT penalty depends on the relative placement of ASE and filters and on the implementation-dependent capabilities of the DSP receiver. We first validate an already published model based on time-consuming experimental calibration on commercial devices including SS filter response. We then present and validate using numerical simulations a faster analytical approach based on the MMSE theory suitable for modern networks digital twins and planners.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/2993986