Choudhary Amol, Aryanfar Iman, Shahnia Shayan, Morrison Blair, Vu Khu, Madden Stephen, Luther-Davies Barry, Marpaung David, Eggleton Benjamin J
Opt Lett. 2016 Feb 1;41(3):436-9. doi: 10.1364/OL.41.000436.
An unprecedented Brillouin gain of 44 dB in a photonic chip enables the realization of broadly tunable and reconfigurable integrated microwave photonic filters. More than a decade bandwidth reconfigurability from 30 up to 440 MHz, with a passband ripple <1.9 dB is achieved by tailoring the Brillouin pump. The filter central frequency is continuously tuned up to 30 GHz with no degradation of the passband response, which is a major improvement over electronic filters. Furthermore, we demonstrate pump tailoring to realize multiple bandpass filters with different bandwidths and central frequencies, paving the way for multiple on-chip microwave filters and channelizers.
光子芯片中实现了前所未有的44 dB布里渊增益，这使得广泛可调谐和可重构的集成微波光子滤波器得以实现。通过调整布里渊泵浦，实现了超过十年的带宽可重构性，范围从30 MHz到440 MHz，通带纹波<1.9 dB。滤波器中心频率可连续调谐至30 GHz，而通带响应无退化，这是相对于电子滤波器的一项重大改进。此外，我们展示了通过泵浦调整来实现具有不同带宽和中心频率的多个带通滤波器，为多个片上微波滤波器和信道化器铺平了道路。
