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- W1849271619 endingPage "854" @default.
- W1849271619 startingPage "854" @default.
- W1849271619 abstract "Integrated microwave photonics, an emerging technology combining radio frequency (RF) engineering and integrated photonics, has great potential to be adopted for wideband analog processing applications. However, it has been a challenge to provide photonic integrated circuits with equal levels of function flexibility as compared with their electronic counterparts. Here, we introduce a disruptive approach to tackle this need, which is analogous to an electronic field-programmable gate array. We use a grid of tunable Mach–Zehnder couplers interconnected in a two-dimensional mesh network, each working as a photonic processing unit. Such a device is able to be programmed into many different circuit topologies and thereby provide a diversity of functions. This paper provides, to the best of our knowledge, the first ever demonstration of this concept and shows that a programmable chip with a free spectral range of 14 GHz enables RF filters featuring continuous, over-two-octave frequency coverage, i.e., 1.6–6 GHz, and variable passband shaping ranging from a 55 dB extinction notch filter to a 1.6 GHz bandwidth flat-top filter." @default.
- W1849271619 created "2016-06-24" @default.
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- W1849271619 date "2015-09-25" @default.
- W1849271619 modified "2023-10-16" @default.
- W1849271619 title "Programmable photonic signal processor chip for radiofrequency applications" @default.
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- W1849271619 doi "https://doi.org/10.1364/optica.2.000854" @default.
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