Roll-Off Factor Analysis of Optical Nyquist Pulses Generated by an On-Chip Mach-Zehnder Modulator
- 14 September 2021
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 33 (21), 1189-1192
- https://doi.org/10.1109/lpt.2021.3112485
Abstract
Optical sinc-shaped Nyquist pulses are promising in photonic signal processing and high-speed optical data transmission due to their orthogonality and inter-symbol interference (ISI) free characteristics. Nonetheless, the presence of non-idealities results in a deteriorated system performance, especially for the metrological assessment of sampling precision. In this work, we explore the impact of the optical filter roll-off factor on Nyquist pulses for a three-line comb with a frequency spacing of 8.4 GHz using a wideband on-chip silicon Mach-Zehnder modulator. Furthermore, we characterize the integrated modulator and compare the sinc-shaped Nyquist pulse quality with the recently reported works.Keywords
Funding Information
- Deutsche Forschungsgemeinschaft (403579441, 424608109, 424608271, 424607946, 424608191, 403154102, 322402243)
- German Federal Ministry of Education and Research (13N14879)
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