AI Article Synopsis
- The proposal introduces a new method for creating fiber optic speckle spectrometers that balances size and performance.
- It utilizes a periodically tapered coreless fiber that enhances the excitation of higher-order modes, achieving an impressive spectral resolution of 0.03 nm over a 5-cm length.
- The design shows strong performance by effectively reconstructing narrow linewidth and broadband spectra within the 1540-1560 nm wavelength range, rivaling traditional 2-meter multimode fiber spectrometers but in a much smaller size.
Article Abstract
This Letter proposes a method that balances miniaturization and high performance of fiber optic speckle spectrometers. The periodically tapered coreless fiber is used as the scattering element to excite more higher-order modes in the coreless fiber. As a result, a remarkable spectral resolution of 0.03 nm in the near-infrared spectrum can be achieved with a 5-cm-long fiber. Narrow linewidth and broadband spectra in the wavelength of 1540-1560 nm are reconstructed separately, demonstrating the excellent performance of the designed all-fiber spectrometer. The spectral resolution of our proposed spectrometer is comparable to that of a 2-m multimode fiber spectrometer and has a significant improvement in miniaturization.
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| http://dx.doi.org/10.1364/OL.497037 | DOI Listing |
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