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发明公开
CN110160960A 基于耦合器结构的微纳光纤生物传感器及其制备方法 无效 - 撤回

基于耦合器结构的微纳光纤生物传感器及其制备方法
摘要：
本发明提供了一种基于耦合器结构的微纳光纤生物传感器，所述传感器包括第一输入传输光纤、第一输出传输光纤、第二输入传输光纤、第二输出传输光纤和耦合区微纳光纤，所述第一输入传输光纤依次连接所述耦合区微纳光纤和所述第一输出传输光纤，所述第二输入传输光纤依次连接所述耦合区微纳光纤和所述第二输出传输光纤。所述耦合区微纳光纤由两根单模光纤分别和无芯光纤熔接后打结平行放置再进行真空吸附、拉锥，使两段无芯光纤熔成一体构成单模-无芯-单模耦合器结构，所述无芯光纤的锥区长度L1为0.8~1.5cm，所述无芯光纤的锥径D1为1~10μm。本发明提供的生物传感器可以用来检测待测样品中是否含有某种食源性致病菌。
摘要（英）：

The invention provides a micro-nano optical fiber biosensor based on a coupler structure. The biosensor comprises a first input transmission optical fiber, a first output transmission optical fiber, asecond input transmission optical fiber, a second output transmission optical fiber and a coupled zone micro-nano optical fiber, wherein the first input transmission optical fiber is sequentially connected with the coupled zone micro-nano optical fiber and the first output transmission optical fiber, and the second input transmission optical fiber is sequentially connected with the coupled zone micro-nano optical fiber and the second output transmission optical fiber. The coupled zone micro-nano optical fiber is respectively fused with coreless optical fibers by virtue of two singlemode optical fibers, then are knotted and placed in parallel and then are subjected to vacuum adsorption and tapering, so that the two coreless optical fibers are fused into a whole, and a singlemode-coreless-singlemode coupler structure is formed, wherein length L1 of a cone of each coreless optical fiber is 0.8-1.5cm, and cone diameter D1 of each coreless optical fiber is 1-10[mu]m. The biosensor providedby the invention can be used for detecting whether a to-be-detected sample contains a certain kind of food-borne pathogenic bacterium.

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