Demonstration of a compressive-sensing Fourier-transform on-chip spectrometer
Demonstration of a compressive-sensing Fourier-transform on-chip spectrometer
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DOI：
10.1364/ol.42.001440
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发表时间：
2017-04-01
期刊：
影响因子：
3.6
通讯作者：
Lee, Regina
中科院分区：
文献类型：
--
作者：
Podmore, Hugh;Scott, Alan;Lee, Regina
我们在平面波导傅里叶变换光谱仪（FTS）装置中演示了压缩传感（CS）光谱.该光谱仪被实现为集成在光子芯片上的马赫-曾德尔干涉仪（MZI）阵列。来自一组MZI的信号由欠采样的离散傅立叶干涉图组成，我们使用l（1）范数最小化来反演该干涉图以检索稀疏输入光谱。为了实现这种技术，我们使用了一个亚波长工程空间外差FTS芯片组成的32个独立的MZI。我们展示了三个稀疏输入信号的检索，通过收集数据从限制集（8和14）的MZI和应用常见的CS重建技术，这个数据。我们表明，这种检索保持完整的分辨率和带宽的原始设备，尽管采样因子低至四分之一的传统（非压缩）设计。(C)2017美国光学学会
We demonstrate compressive- sensing (CS) spectroscopy in a planar- waveguide Fourier- transform spectrometer ( FTS) device. The spectrometer is implemented as an array of Mach- Zehnder interferometers ( MZIs) integrated on a photonic chip. The signal from a set of MZIs is composed of an undersampled discrete Fourier interferogram, which we invert using l(1)-norm minimization to retrieve a sparse input spectrum. To implement this technique, we use a subwavelength- engineered spatial heterodyne FTS on a chip composed of 32 independent MZIs. We demonstrate the retrieval of three sparse input signals by collecting data from restricted sets ( 8 and 14) of MZIs and applying common CS reconstruction techniques to this data. We show that this retrieval maintains the full resolution and bandwidth of the original device, despite a sampling factor as low as one- fourth of a conventional ( non- compressive) design. (C) 2017 Optical Society of America