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.

光谱学的广泛应用使得小型化光谱仪具有根本性的重要性。可扩展性、高性能、低成本和小占地面积仍然是相互矛盾的，限制了小型化光谱仪在实际应用中的适用性。在这里，我们提出了一种满足四个优点的紧凑型光谱仪。该设备使用光纤锥形尖端在 1 毫米长度内生成复杂的漏模图案。图案和波长之间的独特对应关系可在数百纳米光谱范围内有效运行，同时提供约 1 pm 左右的光谱分辨率。多个锥形尖端的集成可实现高光谱成像应用。我们的设备的工作范围可以使用不同的材料和探测器进一步扩展，同时保持相似的架构。