Microtaper leaky-mode spectrometer with picometer resolution

作者：Qingqing Cen, Sijie Pian, Xinhang Liu, Yuwei Tang, Xinying He, Yaoguang Ma · 发表于：eLight · 年份：2023 · DOI：10.1186/s43593-023-00041-7 · 被引用次数：64 · 研究领域：Photonic and Optical Devices、Advanced Fiber Optic Sensors、Spectroscopy and Laser Applications

Abstract The wide application of optical spectroscopy makes miniaturized spectrometers with fundamental importance. The scalability, high-performance, low-cost, and small footprint are still contradicting each other and limiting the applicability of miniaturized spectrometer for practical application. Here we propose a compact spectrometer that satisfies the four advantages. The device uses a fiber taper tip to generate complex leaky mode patterns within 1 mm length. The unique correspondence between the pattern and wavelength operates effectively for hundreds of nanometers spectral range while providing a spectral resolution around ~ 1 pm. The integration of multiple taper tips enables hyperspectral imaging applications. The working range of our device can be further extended using different materials and detectors while keeping the similar architecture.