Presentation
9 March 2023 Compact, low-voltage, high-performance modulator based on micro-resonators far off critical coupling
Author Affiliations +
Proceedings Volume PC12427, Optical Interconnects XXIII; PC1242709 (2023) https://doi.org/10.1117/12.2649777
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
Micro-resonator modulators working in the critical coupling mode is usually sensitive to fabrication variation. We employ two modulated racetrack-resonators symmetrically coupled to a waveguide on two sides on a silicon-on-insulator wafer. The structure in the strong-coupling regime can perform modulation function stably through the interference of two racetracks. Fabrication variation (30~50%) of coupling constant or quality factor can be compensated by static voltage bias applied on the diode-embedded resonators. Detailed working principle and fabrication-variation compensation will be presented. Experimentally, we demonstrate 50 ~ 56 Gb/s modulation with high extinction ratio of 7.9 ~ 9.4 dB and high signal-to-noise ratio of 6~7, while maintaining low driving voltage (<2.5 Vpp) and small size (tens of microns).
Conference Presentation
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zhaobang Zeng, Kaifei Tang, Yu Xin, Peiyan Zhao, Lemeng Leng, Chenbin Zhang, Ding Ding, Wei Jiang, Fuhao Yu, and Chenghao Feng "Compact, low-voltage, high-performance modulator based on micro-resonators far off critical coupling", Proc. SPIE PC12427, Optical Interconnects XXIII, PC1242709 (9 March 2023); https://doi.org/10.1117/12.2649777
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KEYWORDS
Modulators

Resonators

Microresonators

Signal attenuation

Modulation

Waveguides

Diodes

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