项目名称： 高亮度高平坦度超连续谱光源的宽带光纤腔衰荡传感方法及其应用研究

项目编号： No.61475044

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 成纯富

作者单位： 湖北工业大学

项目金额： 82万元

中文摘要： 宽带腔衰荡光谱技术是一种高灵敏度多组分传感技术，已在多组分痕量气体检测等方面，展示了极其广泛的应用前景，近年来因超连续谱光源的出现更是使其成为当前腔衰荡传感技术的研究热点。但目前超连续谱光源传统腔衰荡传感存在超连续谱不平坦导致弱谱成分探测灵敏度不高、腔镜带宽限制了传感带宽和腔镜膜层易老化导致传感系统不稳定等问题，迫切需要研发高平坦度的超连续谱光源和发展新型宽带腔。为此，本项目提出将高亮度高平坦度超连续谱光源融入宽带光纤腔衰荡传感技术，提高了传感带宽、灵敏度和稳定度。将开展基于高亮度高平坦度超连续谱光源的光纤腔衰荡传感理论及其传感特性、低损耗实用传感器及其复用等关键技术的研究，并通过多组分、多参量传感实验进行验证，重点突破二氧化碳和甲烷混合气体快速同步检测等关键技术，对于实现高灵敏度多组分、多参量传感技术，具有十分重要的科学研究意义和实际应用价值。

中文关键词： 超连续谱光源；光纤腔衰荡；多组分气体传感；光子晶体光纤

英文摘要： Broadband cavity ring-down spectroscopy (BB-CRDS) technique is a highly sensitive multicomponent sensing technique, which has shown the extensive application in aspects of multicomponent trace gases detection and so on. It has become a hot research topic in the field of CRDS sensing technique due to the appearance of supercontinuum source recently. However, the trandtional broadband cavity ring-down sensing technique based on supercontinuum source has many disadvantages such as the detection sensitivity of weak spectral components is low due to the unflat supercontinuum source, sensing band is limited by the bandwidth of cavity mirrors, the stability of the sensing system is very likely to degenerate due to the ageing process of the cavity mirror coatings and so on. Therefore, there is an urgent need to develop a high flat supercontinuum source and new broadband cavity. So the project proposes to combine the two technique of the high bright and flat supercontinuum source and the broadband fiber cavity ring-down, which can improve the sensing band, the sensitivity and the stability of the sensing system. The project needs to carry out the sensing theory and sensing characteristics of broadband fiber cavity ring-down sensing technique based on a high bright and flat supercontinuum source, needs to research the key technology such as the low-loss sensor and its multiplexing and so on, needs to verify the new sensing method by doing the multicomponent, multiparameter sensing experiments. Give priority to make breakthroughs in key technologies such as fast and simultaneous detection of the mixed gases of carbon dioxide and methane and so on. There are a great significance in the academic and practical application values to explore the highly sensitive multicomponent, multiparameter sensing technique.

英文关键词： Supercontinuum source;Fiber loop cavity ring down spectroscopy;multicomponent gas sensing;Photonic crystal fibers