光纤表面等离子体共振（SPR）传感技术在水质检测领域具有重要的应用价值。近年来，传统的单通道光纤SPR传感器已不能满足实际检测的需要，并且现有的多通道光纤SPR传感器制备工艺复杂、成本高，发展较为缓慢。为突破现有技术对多通道光纤SPR传感的限制，本项目提出一种塑料光纤微型SPR阵列传感器，该器件采用级联的微楔形结构，通过改变微楔角的大小调节SPR共振峰的位置，从而实现多通道SPR传感。项目借助于纳米压印的方法，在微米塑料光纤上开展微热压成型的微加工技术，研究解决高分子聚合物光纤微热压成型的高精确度复制问题。研究成果有望实现一种低成本、微结构特性一致性高、可批量制造的多通道光纤SPR传感器，对促进光纤传感技术的发展具有重要意义。

Surface plasmon resonance (SPR) fiber optic sensing technology plays an important role in water quality detection. In recent years, the traditional single-channel fiber based SPR sensors cannot meet the need of detection, and the existing multi-channel SPR sensors developed slowly due to the complex fabrication and high cost. To overcome the limitations of the existing technology, this project proposes a plastic optical fiber based micro SPR array sensor. The device is composed of cascaded micro wedge structures on fiber, by changing the micro wedge structure angle, the position of SPR resonance peak can be adjusted, which can realize the multi-channel SPR sensing. By referring to the nanoimprint lithography, the project carries out the micro-hot embossing lithography on micro-plastic optical fibers, and solves the fidelity of the microstructure fabrication on the polymer fibers. The project aims to realize a low cost, high consistency of microstructure, and can be mass produced multi-channel SPR sensors, and it will be important for the development of the fiber optic sensing technology.