Abstract | ||
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We report our advances in development of on-chip Fourier-transform spectrometers. Specifically, we present applications of subwavelength engineered waveguides in a new type of a compressive-sensing Fourier-transform spatial heterodyne spectrometer chip. The spectrometer is implemented as an array of Mach-Zehnder interferometers (MZIs) integrated on a photonic chip, in a spatial heterodyne configuration [1]. The signal from a set of MZIs comprises an undersampled discrete Fourier interferogram, which is inverted using L 1 -norm minimization technique to retrieve a sparse input spectrum. To implement this technique we use a subwavelength-engineered Fourier-transform spectrometer on a chip comprising 32 independent MZIs [2]. We successfully demonstrate the retrieval of sparse input signals by collecting data from restricted sets (8 and 14) of MZIs and applying common compressive-sensing 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 1/4th of a conventional (non-compressive) design [3]. |
Year | DOI | Venue |
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2017 | 10.1109/ICTON.2017.8024928 | 2017 19TH INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS (ICTON) |
DocType | ISSN | Citations |
Conference | 2162-7339 | 0 |
PageRank | References | Authors |
0.34 | 0 | 12 |
Name | Order | Citations | PageRank |
---|---|---|---|
pavel cheben | 1 | 3 | 7.16 |
Hugh Podmore | 2 | 0 | 0.34 |
A. Herrero | 3 | 0 | 0.34 |
Aitor V. Velasco | 4 | 1 | 1.75 |
j h schmid | 5 | 0 | 1.69 |
Alan Scott | 6 | 0 | 0.34 |
m vachon | 7 | 1 | 2.65 |
Lee, R. | 8 | 0 | 0.68 |
m l calvo | 9 | 0 | 1.01 |
d x xu | 10 | 0 | 1.01 |
Siegfried Janz | 11 | 0 | 1.35 |
Pedro Corredera | 12 | 2 | 2.15 |