Photonic chip based tunable and reconfigurable narrowband microwave photonic filter using stimulated Brillouin scattering
Photonic chip based tunable and reconfigurable narrowband microwave photonic filter using stimulated Brillouin scattering
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DOI：
10.1364/oe.20.018836
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发表时间：
2012-08-13
期刊：
影响因子：
3.8
通讯作者：
Eggleton, Benjamin J.
中科院分区：
文献类型：
--
作者：
Byrnes, Adam;Pant, Ravi;Eggleton, Benjamin J.
我们首次展示了基于光子芯片的动态可重构、宽可调、窄通带、高 Q 微波光子滤波器 (MPF)。我们利用 6.5 厘米长的硫族化物 (As2S3) 光子芯片中的受激布里渊散射 (SBS) 来演示 MPF，该 MPF 具有类似于 520 的高品质因数和窄带宽，并且可动态重新配置和广泛可调。它在 2-12 GHz 的大频率调谐范围内保持了 23 +/- 2MHz 的稳定 3 dB 带宽和 20 +/- 2 dB 的幅度。通过定制泵浦频谱，我们将 MPF 的 3 dB 带宽从大约 20 MHz 重新配置为大约 40 MHz，并将形状因子从 3.5 调整到 2，从而形成几乎平顶的滤波器轮廓。该演示代表了集成微波光子学的重大进步，在雷达和模拟通信的片上微波信号处理方面具有潜在的应用。 (C) 2012年美国光学学会
We report the first demonstration of a photonic chip based dynamically reconfigurable, widely tunable, narrow pass-band, high Q microwave photonic filter (MPF). We exploit stimulated Brillouin scattering (SBS) in a 6.5 cm long chalcogenide (As2S3) photonic chip to demonstrate a MPF that exhibited a high quality factor of similar to 520 and narrow bandwidth and was dynamically reconfigurable and widely tunable. It maintained a stable 3 dB bandwidth of 23 +/- 2MHz and amplitude of 20 +/- 2 dB over a large frequency tuning range of 2-12 GHz. By tailoring the pump spectrum, we reconfigured the 3 dB bandwidth of the MPF from similar to 20 MHz to similar to 40 MHz and tuned the shape factor from 3.5 to 2 resulting in a nearly flat-topped filter profile. This demonstration represents a significant advance in integrated microwave photonics with potential applications in on-chip microwave signal processing for RADAR and analogue communications. (C) 2012 Optical Society of America