Theoretical and Experimental Analysis of a 4 × 4 Reconfigurable MZI-Based Linear Optical Processor
Theoretical and Experimental Analysis of a 4 × 4 Reconfigurable MZI-Based Linear Optical Processor
复制标题
基于 MZI 的 4 × 4 可重构线性光学处理器的理论与实验分析
DOI：
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发表时间：
2020
影响因子：
4.7
通讯作者：
O. Liboiron
中科院分区：
文献类型：
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作者：
Farhad Shokraneh;M. S. Nezami;O. Liboiron
对一种基于4 × 4可重构马赫-曾德尔干涉仪（MZI）的线性光处理器进行了理论分析和实验表征。该结构的线性变换矩阵是利用其构建块（一个2 × 2可重构的MZI）从理论上确定的。为了对器件进行编程，将给定应用的线性变换矩阵分解为结构的组成矩阵。因此，通过光处理器实现该应用的变换矩阵所需的相移从理论上确定。由于制造工艺变化导致的mzi中的随机相位偏移，它们最初通过实验协议进行配置。所提出的校准方案允许直接表征MZI，以减轻可能的输入相位误差，并确定每个MZI的条形和交叉状态，以便在编程设备之前将其调谐到所需的安全状态。完成组态过程后，可以对器件进行编程，构造应用的线性变换矩阵。在这方面，使用所需的偏置电压，从分解过程中获得的相移被应用于器件中mzi的相移器。
A 4 × 4 reconfigurable Mach–Zehnder interferometer (MZI)-based linear optical processor is investigated through its theoretical analyses and characterized experimentally. The linear transformation matrix of the structure is theoretically determined using its building block, which is a 2 × 2 reconfigurable MZI. To program the device, the linear transformation matrix of a given application is decomposed into that of the constituent MZIs of the structure. Thus, the required phase shifts for implementing the transformation matrix of the application by means of the optical processor are determined theoretically. Due to random phase offsets in the MZIs resulting from fabrication process variations, they are initially configured through an experimental protocol. The presented calibration scheme allows to straightforwardly characterize the MZIs to mitigate the possible input phase errors and determine the bar and cross states of each MZI for tuning it at the required sate before programming the device. After the configuration process, the device can be programmed to construct the linear transformation matrix of the application. In this regard, using the required bias voltages, the phase shifts obtained from the decomposition process are applied to the phase shifters of the MZIs in the device.
影响因子：
35
作者：
Shen, Yichen;Harris, Nicholas C.;Soljacic, Marin
通讯作者：
Soljacic, Marin