Photonic Analog-to-Digital-Converters – Comparison of a MZM-Sampler with an Optoelectronic Switched-Emitter-Follower Sampler
Konferenz: Photonische Netze - 21. ITG-Fachtagung
24.11.2020 - 25.11.2020 in online
Tagungsband: ITG-Fb. 294: Photonische Netze
Seiten: 6Sprache: EnglischTyp: PDF
Autoren:
Weizel, Maxim; Scheytt, J. Christoph (System and Circuit Technology, University of Paderborn, Paderborn, Germany)
Kaertner, Franz X. (CFEL, DESY and Hamburg University, Hamburg, Germany)
Witzens, Jeremy (Institute for Integrated Photonics, RWTH Aachen University, Aachen, Germany)
Inhalt:
In this paper two integrated photonic Analog-to-Digital Converter architectures are modeled and simulated. The results are compared in terms of bandwidth, linearity, and jitter performance. The Mach-Zehnder-Modulator based sampler is implemented on system level in Lumerical Interconnect. The effective resolution is dependent on the average optical power, the modulation index, and the applied post-processing. It stays above 7 Bit for a modulation index of m=0.31 up to 20 GHz. The optoelectronic Switched-Emitter-Follower architecture is designed in a 250nm SiGe BiCMOS photonic process and the post-layout transient noise simulations show an effective resolution of over 7 Bit for an input amplitude of 200mVpp up to 50 GHz.