All-optical PAM4 to QPSK and 16QAM Conversions Using Si-rich SiN Waveguides

Fujihara, Yuto; Mishina, Ken; Sueyoshi, Asahi; Paula, Alisson Rodrigues de; Maruta, Akihiro

doi:10.23919/oecc/psc53152.2022.9850146

Cited by 1 publication

(1 citation statement)

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“…The design of the SRN waveguide for the modulation format converter and the feasibility of the proposed conversion method are verified via numerical simulations. As an extension of the extant research in [20], we comprehensively describe the SRN waveguide design method for the proposed modulation format conversion together with theoretical and numerical investigations of the basic characteristics. Subsequently, we demonstrate successful modulation format conversions to 50-Gbps-class QPSK and 100-Gbps-class 16QAM signals.…”

Section: Introductionmentioning

confidence: 99%

All-Optical Modulation Format Conversions from PAM4 to QPSK and 16QAM Using Silicon-Rich Nitride Waveguides

Fujihara

Sueyoshi

Paula

et al. 2023

IEICE Trans. Commun.

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Quadrature phase-shift keying (QPSK) and 16-quadrature amplitude modulation (16QAM) formats are deployed in inter-data center networks where high transmission capacity and spectral efficiency are required. However, in intra-data center networks, a four-level pulse amplitude modulation (PAM4) format is deployed to satisfy the requirements for a simple and low-cost transceiver configuration. For the seamless and effective connection of such heterogeneous networks without an optical-electricaloptical conversion, an all-optical modulation format conversion technique is required. In this paper, we propose all-optical PAM4 to QPSK and 16QAM modulation format conversions using silicon-rich nitride waveguides. The successful conversions from 50-Gbps-class PAM4 signals to 50-Gbps-class QPSK and 100-Gbps-class 16QAM signals are demonstrated via numerical simulations.

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Section: Introductionmentioning

confidence: 99%