Journal
OPTICS EXPRESS
Volume 30, Issue 10, Pages 16996-17007Publisher
Optica Publishing Group
DOI: 10.1364/OE.458184
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Funding
- Science and Technology Plan Project of Zhejiang [2022C01108]
- Zhejiang Lab Research Funds [2020LC0AD02]
- Science and Technology Innovation 2025 Major Project of Ningbo [2020Z021]
- National Key Research and Development Program of China [2018YFB2200602]
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In this study, we demonstrate a high efficiency, high linearity, and high-speed silicon Mach-Zehnder modulator based on the DC Kerr effect enhanced by slow light. The modulator exhibits low insertion loss, wide bandwidth, and excellent modulation linearity.
We demonstrate a high efficiency, high linearity and high-speed silicon Mach-Zehnder modulator based on the DC Kerr effect enhanced by slow light. The two modulation arms based on 500-tun-long grating waveguides are embedded with PN and PIN junctions, respectively. A comprehensive comparison between the two modulation arms reveals that insertion loss, bandwidth and modulation linearity are improved significantly after employing the DC Kerr effect. The complementary advantages of the slow light and the DC Kerr effect enable a modulation efficiency of 0.85 V.cm, a linearity of 115 dB.Hz(2/3), and a bandwidth of 30 GHz when the group index of slow light is set to 10. Furthermore, 112 Gbitls PAM4 transmission over 2 km standard single mode fiber (SSMF) with bit error ratio (BER) below the soft decision forward error correction (SD-FEC) threshold is also demonstrated. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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