Simplified colorless characterization scheme for coherent receivers in DWDM scenarios using a single interferer

Reyes-Iglesias, P.J. ; Ortega-Moñux, A. ; Izquierdo, D. (Universidad de Zaragoza) ; Garcés, I. (Universidad de Zaragoza) ; Molina-Fernández, I.

Resumen: Intradyne coherent receivers, capable of detecting an individual wavelength-division multiplexed channel just by tuning the local oscillator frequency, is of great interest for the development of high-capacity flexible optical networks. Nevertheless, the unavoidable amplitude imbalances inherent to any realistic coherent receiver induce an interference contribution from the self-beating of the coincident channels present at its input. The characterization of this degraded colorless reception operation is of fundamental importance, but it usually requires the use of rather complex experimental setups, especially when the effects of tens of interference channels should be evaluated. In this work we propose a novel experimental setup that only requires the use of a single intense interferer to emulate those coincident channels, thus drastically simplifying the characterization process. In addition, we develop a general expression for the signal-to-noise ratio of the system that theoretically justifies the intended setup and demonstrate by massive numerical simulations its accuracy in different scenarios. We believe that the proposed approach may contribute to facilitate the experimental characterization of high-performance colorless coherent receivers.

Idioma: Inglés

DOI: 10.1016/j.yofte.2023.103595

Año: 2024

Publicado en: OPTICAL FIBER TECHNOLOGY 82 (2024), 103595 [9 pp.]
ISSN: 1068-5200

Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2019-106747RB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2020-114916RB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/TED2021-130400B-I00

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Aplicada (Dpto. Física Aplicada)
Área (Departamento): Área Teoría Señal y Comunicac. (Dpto. Ingeniería Electrón.Com.)