Fan Meng, Yun-Zuo Zhang, Wei-Wei Feng, Peng-Fei Wu, Ge-Yin Zou. Spectrum detection based on compressive sensing inside multimode fibers [J]. Acta Physica Sinica, 2020, 69(13): 134204-1
- Acta Physica Sinica
- Vol. 69, Issue 13, 134204-1 (2020)
Fig. 1. (a) The structural diagram of spectroscopy detection based on the multimode fiber; (b) the multimode interference patterns at different wavelengths.
Fig. 2. The detecting principle of the spectrometer based on a multimode fiber.
Fig. 3. (a) The reconstruction of two narrow lines, indicating the resolution is 20 pm; (b) The reconstruction error as a function of noise threshold.
Fig. 4. (a) and (b) are spectral reconstructions of the fiber-based spectrometer under different LED-source combinations.
Fig. 5. (a) The infrared spectrometer based on a multimode fiber; (b) The spectrometer based on a planar multimode waveguide; (c) A portable spectrometer integrated with a smart phone.
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