Coherent data system and slow data transmission in a single fiber with ITU grid spacing

Tomas Horvath; Jaromir Sima; Jan Radil; Josef Vojtech

doi:10.1117/12.2676743

28 September 2023 Coherent data system and slow data transmission in a single fiber with ITU grid spacing

Tomas Horvath, Jaromir Sima, Jan Radil, Josef Vojtech

Proceedings Volume 12664, Optical Modeling and Performance Predictions XIII; 126640K (2023) https://doi.org/10.1117/12.2676743
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Conference Poster

Abstract

In the period following the COVID-19 outbreak, there continues to be a demand for high-speed data services and sufficient bandwidth. From a transport network perspective, a coherent system transmits data independent of the specific transmission wavelengths . However, it is desirable to address the transmission of slow signals (e.g., OOK) in the same fiber and their interaction between transmissions. Here, we assess the effect of a slow signal with a low modulation rate in a DWDM network on high-speed (super channel) 800G transmission. To evaluate the effect on high-speed transmission, the Q factor and ESNR parameters provided by the Ciena transmission system were analyzed. For the test setup and the combination of the coherent 800G signal with the standard DFB transceiver signal and 100 GHz spacing. The 800G signal required 112 GHz bandwidth for its transmission. For a path length of 200 km and for modulation rates of the OOK signal ranging from 100 Mbit to 4 Gbit, we found no significant effect on the evaluated parameters of the Q factor and ESNR of the transmitted 800 G signal. The more significant effect on the 800G signal is, the mutual power level of neighboring channels with different modulation types. To limit the mutual influence of adjacent signals, these signals must also be balanced according to their maximum (peak) power level in the transmitted spectrum.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Tomas Horvath, Jaromir Sima, Jan Radil, and Josef Vojtech "Coherent data system and slow data transmission in a single fiber with ITU grid spacing", Proc. SPIE 12664, Optical Modeling and Performance Predictions XIII, 126640K (28 September 2023); https://doi.org/10.1117/12.2676743

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