Na Qian, Yinfu Liu, Peilin Li, Defu Zhou, Weiwen Zou
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引用次数: 0
Abstract
We propose and demonstrate a wavelength-division multiplexing (WDM)-based degenerate architecture for array photonic analog to digital converters (ADCs), which can be applied in phased array and multiple input multiple output (MIMO) systems. This architecture is capable of optical sampling and demultiplexing simultaneously with excellent synchronization and consistency. In the experiment, the four-channel array photonic ADCs is realized with a 20 GSa/s sampling rate for each channel. The synchronization accuracy among channels is below 0.2 ps. The frequency response uniformity in the operating frequency range of 20 GHz is also characterized. The effective number of bits is ∼6.5 bits within 20 GHz. Furthermore, we successfully apply the array photonic ADCs in wideband digital beamforming of multiple linear frequency modulated signals at 8-10 GHz.
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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