Journal
OPTICS LETTERS
Volume 44, Issue 23, Pages 5655-5658Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.44.005655
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Funding
- National Key RD Program of China [2018YFB2200600]
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In this Letter, we demonstrate a highly linear silicon modulator based on the dual-series Mach-Zehnder modulator (MZM) architecture. The two sub-MZMs are biased at quadrature points of opposite polarities. A proper power-splitting ratio of the driving RF signal on the two sub-MZMs enables the suppression of the third order intermodulation distortion (IMD3). The spurious-free dynamic ranges (SFDRs) for IMD3 are 109.5/100.5 dB.Hz(2/3 )at 1/10 GHz. In contrast, the reference single MZM on the same chip exhibits SFDRs of 95.2/86.8 dB.Hz(2/3) at 1/10 GHz at its optimal reverse bias voltage. (C) 2019 Optical Society of America
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