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- Title
Photonic integrated field-programmable disk array signal processor.
- Authors
Zhang, Weifeng; Yao, Jianping
- Abstract
Thanks to the nature of strong programmability, field-programmable gate arrays (FPGAs) have been playing a significant role in signal processing and control. With the explosive growth in digital data, big data analytics becomes an important emerging field, in which FPGAs are a major player. However, the computational speed and power efficiency provided by FPGAs are limited by electronic clock rates and Ohmic losses. To overcome the limitations, photonics is envisioned as an enabling solution, thanks to its ultrafast and low power consumption feature. In this paper, we propose a scalable photonic field-programmable disk array (FPDA) signal processor. Ultra-compact microdisk resonators are leveraged as a fundamental execution units in the core to route, store and process optical signals. By field-programming the processor, diverse circuit topologies can be realized to perform multiple specific signal processing functions including filtering, temporal differentiation, time delay, beamforming, and spectral shaping. FPGAs have long been of interest as reconfigurable circuits, but their electronic nature provides eventual limitations. Here the authors demonstrate a photonic digital signal processor that is field programmable using arrays of microdisk resonators.
- Subjects
ARRAY processors; DIGITAL signal processing; SIGNAL processing; GATE array circuits; FIELD programmable gate arrays
- Publication
Nature Communications, 2020, Vol 11, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-019-14249-0