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Temperature-compensated fiber laser refractometer based on compact hybrid S-taper/FBG structure

机译：基于紧凑型S-taper / FBG混合结构的温度补偿光纤激光折光仪

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摘要

A temperature-compensated fiber laser refractometer based on compact hybrid S fiber taper (SFT)/fiber Bragg grating (FBG) structure is proposed. The SFT is used as a sensing component as well as a band-pass filter (BPF) to tailor the FBG reflection, which has the micro size of 0.78 mm. Owing to the RI-dependence intra-cavity loss, the output power of the erbium-doped fiber ring laser (FRL) can be modulated by the surrounding refractive index (SRI). During the measurement range of 1.3330-1.4060, the refractometer provides a high sensitivity of 269.76 dB/RIU. By using the sensing matrix containing the SRI as well as temperature sensitivities for the output power and lasing wavelength, the temperature cross-sensitivity problem can be effectively resolved.
机译：提出了一种基于紧凑型混合S光纤锥度（SFT）/光纤布拉格光栅（FBG）结构的温度补偿光纤激光折光仪。 SFT用作传感组件以及带通滤波器（BPF）来定制FBG反射，其微尺寸为0.78 mm。由于依赖于RI的腔内损耗，掺by光纤环形激光器（FRL）的输出功率可以通过周围的折射率（SRI）进行调制。在1.3330-1.4060的测量范围内，折光仪可提供269.76 dB / RIU的高灵敏度。通过使用包含SRI以及输出功率和激光波长的温度敏感度的感测矩阵，可以有效解决温度交叉敏感度问题。

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