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Photonic Crystal Cavity IQ Modulators in Thin-Film Lithium Niobate
ACS Photonics ( IF 6.5 ) Pub Date : 2024-08-20 , DOI: 10.1021/acsphotonics.4c01138 Hugo Larocque 1 , Dashiell L. P. Vitullo 2 , Alexander Sludds 1 , Hamed Sattari 3 , Ian Christen 1 , Gregory Choong 3 , Iván Prieto 3 , Jacopo Leo 3 , Homa Zarebidaki 3 , Sanjaya Lohani 4 , Brian T. Kirby 2, 5 , Öney Soykal 2 , Mo Soltani 6 , Amir H. Ghadimi 3 , Dirk R. Englund 1 , Mikkel Heuck 7
ACS Photonics ( IF 6.5 ) Pub Date : 2024-08-20 , DOI: 10.1021/acsphotonics.4c01138 Hugo Larocque 1 , Dashiell L. P. Vitullo 2 , Alexander Sludds 1 , Hamed Sattari 3 , Ian Christen 1 , Gregory Choong 3 , Iván Prieto 3 , Jacopo Leo 3 , Homa Zarebidaki 3 , Sanjaya Lohani 4 , Brian T. Kirby 2, 5 , Öney Soykal 2 , Mo Soltani 6 , Amir H. Ghadimi 3 , Dirk R. Englund 1 , Mikkel Heuck 7
Affiliation
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Thin-Film Lithium Niobate is an emerging integrated photonic platform showing great promise due to its large second-order nonlinearity at microwave and optical frequencies, cryogenic compatibility, large piezoelectric response, and low optical loss at visible and near-infrared wavelengths. These properties enabled Mach–Zehnder interferometer-based devices to demonstrate amplitude- and in-phase/quadrature (IQ) modulation at voltage levels compatible with complementary metal-oxide-semiconductor (CMOS) electronics. Maintaining low-voltage operation requires centimeter-scale device lengths, making it challenging to realize the large-scale circuits required by ever-increasing demands for information density in communications as well as classical- and quantum information processing. Reduced device sizes reaching the 10 μm scale are possible with photonic crystal cavities. So far, their operation has been limited to amplitude modulation and required circulators or lacked cascadability. Here, we demonstrate a compact IQ modulator using two photonic crystal cavities operating as phase shifters in a Fabry–Perot-enhanced Michelson interferometer configuration. It supports cascadable amplitude and phase modulation at GHz bandwidths with CMOS-compatible voltages.
中文翻译：
薄膜铌酸锂光子晶体腔 IQ 调制器
薄膜铌酸锂是一种新兴的集成光子平台，由于其在微波和光学频率下具有大的二阶非线性、低温兼容性、大的压电响应以及在可见光和近红外波长下的低光学损耗，显示出了巨大的前景。这些特性使基于马赫-曾德干涉仪的设备能够在与互补金属氧化物半导体 (CMOS) 电子器件兼容的电压水平上演示幅度和同相/正交 (IQ) 调制。维持低电压运行需要厘米级的器件长度，这使得实现通信以及经典和量子信息处理中对信息密度不断增长的需求所需的大规模电路变得具有挑战性。利用光子晶体腔可以将器件尺寸缩小到 10 μm 级。到目前为止，它们的操作仅限于幅度调制和所需的循环器或缺乏级联性。在这里，我们演示了一个紧凑的 IQ 调制器，使用两个光子晶体腔作为法布里-珀罗增强型迈克尔逊干涉仪配置中的移相器。它支持具有 CMOS 兼容电压的 GHz 带宽级联幅度和相位调制。
更新日期：2024-08-20
中文翻译：
薄膜铌酸锂光子晶体腔 IQ 调制器
薄膜铌酸锂是一种新兴的集成光子平台，由于其在微波和光学频率下具有大的二阶非线性、低温兼容性、大的压电响应以及在可见光和近红外波长下的低光学损耗，显示出了巨大的前景。这些特性使基于马赫-曾德干涉仪的设备能够在与互补金属氧化物半导体 (CMOS) 电子器件兼容的电压水平上演示幅度和同相/正交 (IQ) 调制。维持低电压运行需要厘米级的器件长度，这使得实现通信以及经典和量子信息处理中对信息密度不断增长的需求所需的大规模电路变得具有挑战性。利用光子晶体腔可以将器件尺寸缩小到 10 μm 级。到目前为止，它们的操作仅限于幅度调制和所需的循环器或缺乏级联性。在这里，我们演示了一个紧凑的 IQ 调制器，使用两个光子晶体腔作为法布里-珀罗增强型迈克尔逊干涉仪配置中的移相器。它支持具有 CMOS 兼容电压的 GHz 带宽级联幅度和相位调制。
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