|کد مقاله||سال انتشار||مقاله انگلیسی||ترجمه فارسی||تعداد کلمات|
|140603||2018||6 صفحه PDF||سفارش دهید||4017 کلمه|
Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)
Journal : Optics Communications, Volume 409, 15 February 2018, Pages 66-71
In advanced fiber transmission systems with digital signal processors (DSPs), analog bandwidths of digital-to-analog converters (DACs), which interface the DSPs and optics, are the major factors limiting the data rates. We have developed a technology to extend the DACsâ bandwidth using a digital preprocessor, two sub-DACs, and an analog multiplexer. This technology enables us to generate baseband signals with bandwidths of up to around 60Â GHz, which is almost twice that of signals generated by typical CMOS DACs. In this paper, we describe the principle of the bandwidth extension and review high-speed transmission experiments enabled by this technology.