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On-chip programmable ultra-wideband microwave photonic phase shifter and true time delay unit

机译:片内可编程超宽带微波光子移相器和真实延时单元

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摘要

We proposed and experimentally demonstrated an ultra-broadband on-chip microwave photonic processor that can operate both as RF phase shifter (PS) and true-time-delay (TTD) line, with continuous tuning. The processor is based on a silicon dual-phase-shifted waveguide Bragg grating (DPS-WBG) realized with a CMOS compatible process. We experimentally demonstrated the generation of delay up to 19.4 ps over 10 GHz instantaneous bandwidth and a phase shift of approximately 160° over the bandwidth 22-29 GHz. The available RF measurement setup ultimately limits the phase shifting demonstration as the device is capable of providing up to 300° phase shift for RF frequencies over a record bandwidth approaching 1 THz.
机译:我们提出并通过实验证明了一种超宽带片上微波光子处理器,该处理器既可以用作RF移相器(PS)也可以用作实时延迟(TTD)线,并具有连续调谐功能。该处理器基于采用CMOS兼容工艺实现的硅双相移波导布拉格光栅(DPS-WBG)。我们通过实验证明了在10 GHz瞬时带宽上产生高达19.4 ps的延迟,并在22-29 GHz带宽上产生大约160°的相移。可用的RF测量设置最终限制了相移演示,因为该器件能够在接近1 THz的记录带宽上为RF频率提供高达300°的相移。

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