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一、引言 以GaAs为温敏材料的吸收式光纤温度传感器,由于受温敏材料本征吸收波长λ_g的限制,光源和探测器使用通信用LED和PIN。而LED和PIN都是高速器件,且成本高,光源的峰值波长λ_0与温敏材料的λ_g不对应(实测GaAs的λ_g约为0.88～0.9
I. INTRODUCTION Absorption optical fiber temperature sensor based on GaAs is sensitive to the intrinsic absorption wavelength λ_g of light-sensitive material. The light source and detector use LED and PIN for communication. The LED and PIN are high-speed devices, and high cost, the peak wavelength of the light source λ_0 and λ_g temperature-sensitive materials do not correspond to (measured GaAs λ_g about 0.88 ~ 0.9