High-resolution Fourier-transform spectrometer chip with microphotonic silicon spiral waveguides
We report a stationary Fourier-transform spectrometer chip implemented in silicon microphotonic waveguides. The device comprises an array of 32 Mach-Zehnder interferometers (MZIs) with linearly increasing optical path delays between the MZI arms across the array. The optical delays are achieved by u...
| Authors: | , , , , , , , , , , |
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| Format: | article |
| Publication Date: | 2013 |
| Country: | España |
| Institution: | Universidad Complutense de Madrid (UCM) |
| Repository: | Docta Complutense |
| Language: | English |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/33533 |
| Online Access: | https://hdl.handle.net/20.500.14352/33533 |
| Access Level: | Open access |
| Keyword: | 535 Spatial Heterodyne Spectrometer On-Insulator Grating Demultiplexer Óptica (Física) 2209.19 Óptica Física |
| Summary: | We report a stationary Fourier-transform spectrometer chip implemented in silicon microphotonic waveguides. The device comprises an array of 32 Mach-Zehnder interferometers (MZIs) with linearly increasing optical path delays between the MZI arms across the array. The optical delays are achieved by using Si-wire waveguides arranged in tightly coiled spirals with a compact device footprint of 12 mm(2). Spectral retrieval is demonstrated in a single measurement of the stationary spatial interferogram formed at the output waveguides of the array, with a wavelength resolution of 40 pm within a free spectral range of 0.75 nm. The phase and amplitude errors arising from fabrication imperfections are compensated using a transformation matrix spectral retrieval algorithm. |
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