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Compact distributed fiber SPR sensor based on TDM and WDM technology

机译:基于TDM和WDM技术的紧凑型纤维SPR传感器

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摘要

By using a twin-core fiber (TCF), we propose and demonstrate a novel distributed SPR sensor, which employs both the time division multiplexing (TDM) technology and the wavelength division multiplexing (WDM) technology together. The proposed sensor has two sensing passages with four sensing channels (and there are two sensing channels in each sensing passage). We employ the TDM technology to realize the two passage distributed sensing, which are parallel-connection; and we employ the WDM technology to realize the distributed sensing of two channels in a sensing passage, which are series-connected. In order to realize the TDM technology, we employ a two-core fiber, which has two cores in a same cladding, being equal to dividing the traditional single core into two independent sensing zones; in order to realize the WDM technology, we employ a fiber end polishing-connecting method to adjust the resonance angle/wavelength to realize the dynamic range separation. This twin-passage four-channel twin-core fiber SPR sensor is suitable for applying in fields of the multi-channel liquid refractive index and temperature self-reference measurement.
机译:通过使用双核光纤(TCF),我们提出并演示了一种新的分布式SPR传感器,其使用时分复用(TDM)技术和波分复用(WDM)技术在一起。所提出的传感器具有两个具有四个感测通道的传感通道(并且每个感测通道中有两个感测通道)。我们采用TDM技术实现两种通道分布式传感,这是平行连接;我们采用WDM技术实现了在传感通道中的两个通道的分布式感测,这是连接的。为了实现TDM技术,我们采用双芯纤维,其在相同的包层中具有两个核心,等于将传统的单芯划分为两个独立的传感区域;为了实现WDM技术,我们采用光纤端抛光连接方法来调节共振角/波长以实现动态范围分离。该双通道四通道双芯光纤SPR传感器适用于多通道液体折射率和温度自参考测量的领域。

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