Jianing Wang, Jianwei Tang, Xuelin Zhang, Yihang Li, Xi Wang, Jian Li, Qinghai Song, Yanfu Yang, Jiangbing Du, Jinlong Wei, Ke Xu
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Efficient and high-speed silicon Mach-Zehnder modulator at 2 μm wavelengths.
Growing research interests have been directed towards the 2-μm waveband, which is considered to be another promising window for fiber and free-space optical communications. However, the signaling beyond 100 Gbit/s was difficult at this waveband due to the limited bandwidth of the available electro-optic modulators. In this study, we demonstrated a 35-GHz silicon photonic Mach-Zehnder Modulator (MZM) fabricated by a standard multi-project wafer process. Up to 100 Gb/s on-chip modulation was experimentally achieved at the wavelength of 1976 nm, which was eventually limited by the bandwidth of the receiver. The modulation efficiency is measured to be 0.82 V·cm. This is a benchmark modulation speed among existing silicon modulators around a 2 µm spectral range.
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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