Compact atto-joule-per-bit bus-coupled photonic crystal nanobeam switches
Compact atto-joule-per-bit bus-coupled photonic crystal nanobeam switches
复制标题
紧凑型每比特阿焦耳总线耦合光子晶体纳米束开关
DOI：
10.1117/12.2649250
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Chakravarty, Swapnajit
中科院分区：
文献类型：
--
作者：
Shen, Jianhao;Donnelly, Daniel;Chakravarty, Swapnajit
在过去的几十年里，光子学在光收发器以及经典和量子计算应用中优于电子学的优势已经得到证明，特别是在实现高带宽、高互连性和低延迟的能力方面。由于硅光子器件制造商的高度成熟，诸如硅微环谐振器（MRR）、马赫-曾德尔调制器（MZM）和光子晶体（PC）谐振器等光子器件的研究引起了广泛的关注。在这些光子器件中，在p-n结中使用载流子耗尽效应的硅MRR代表了可以以最紧凑的量级以高体积制造的光开关，其具有约5.2fJ/比特的已证明的开关能量。在用集成光子学演示的矩阵乘法中，一种方法是将一个总线直波导耦合到具有不同谐振波长的若干MRR，以在对应于矩阵行或列的不同信道中传输信号。然而，由于单个MRR的有限自由光谱范围（FSR），此类架构可能限于串联的约30个MRR。我们表明，具有亚微米光模限制的PC开关可以具有<300 nm的FSR，这有可能通过多路复用实现具有约200个谐振器的更大矩阵的节能计算。本文介绍了一种氧化物包层总线耦合PC开关的设计，通过仔细控制腔的几何形状以及p-n结掺杂，具有1dB的插入损耗，5dB的消光比，和~ 260 aJ/bit的开关能量。我们还证明了空气包层总线耦合PC开关可以工作在1dB的插入损耗，3dB的消光，和~ 80 aJ/bit的开关能量。
The benefits of photonics over electronics in the application of optical transceivers and both classical and quantum computing have been demonstrated over the past decades, especially in the ability to achieve high bandwidth, high interconnectivity, and low latency. Due to the high maturity of silicon photonics foundries, research on photonics devices such as silicon micro ring resonators (MRRs), Mach-Zehnder modulators (MZM), and photonic crystal (PC) resonators has attracted plenty of attention. Among these photonic devices, silicon MRRs using carrier depletion effects in p-n junctions represent optical switches manufacturable in the most compact magnitude at high volume with demonstrated switching energies ~5.2fJ/bit. In matrix multiplication demonstrated with integrated photonics, one approach is to couple one bus straight waveguide to several MRRs with different resonant wavelengths to transport signals in different channels, corresponding to a matrix row or column. However, such architectures are potentially limited to ~30 MRRs in series, by the limited free-spectral range (FSR) of an individual MRR. We show that PC switches with sub-micron optical mode confinements can have a FSR <300nm, which can potentially enable energy efficient computing with larger matrices of ~200 resonators by multiplexing. In this paper, we present designs for an oxide-clad bus-coupled PC switch with 1dB insertion loss, 5dB extinction, and ~260aJ/bit switching energy by careful control of the cavity geometry as well as p-n junction doping. We also demonstrate that air-clad bus-coupled PC switches can operate with 1dB insertion loss, 3dB extinction, and ~80aJ/bit switching energy.
用于大型计算机系统的硅光子互连
影响因子：
3.6
作者：
R. Ho;P. Amberg;E. Chang;P. Koka;J. Lexau;Guoliang Li;Frankie Y. Liu;H. Schwetman;I. Shubin;H. Thacker;Xuezhe Zheng;John E. Cunningham;Ashok V. Krishnamoorthy
通讯作者：
Ashok V. Krishnamoorthy
影响因子：
3.8
作者：
A. Shakoor;K. Nozaki;E. Kuramochi;K. Nishiguchi;A. Shinya;M. Notomi
通讯作者：
A. Shakoor;K. Nozaki;E. Kuramochi;K. Nishiguchi;A. Shinya;M. Notomi