摘要
A micro Fabry-Perot interferometer （M-FPI） is constructed by splicing a short section of polarization- maintaining photonic crystal fiber （PM-PCF） to an end-cleaved single-mode fiber with controllable offset. Due to the high effective optical path difference induced by the solid core of the PCF, the M-FPI has an ultrasmall cavity of approximately 110 μm. The temperature sensitivity within a range from 33 ℃ to approximately 600 ℃ is measured to be 13.8 pm/℃, which shows good agreement with the theoretical result. This proposed sensor has the advantages of ultracompact size and high stability. Therefore, it is suitable for various space-limited sensing applications in harsh environments.
A micro Fabry-Perot interferometer （M-FPI） is constructed by splicing a short section of polarization- maintaining photonic crystal fiber （PM-PCF） to an end-cleaved single-mode fiber with controllable offset. Due to the high effective optical path difference induced by the solid core of the PCF, the M-FPI has an ultrasmall cavity of approximately 110 μm. The temperature sensitivity within a range from 33 ℃ to approximately 600 ℃ is measured to be 13.8 pm/℃, which shows good agreement with the theoretical result. This proposed sensor has the advantages of ultracompact size and high stability. Therefore, it is suitable for various space-limited sensing applications in harsh environments.
基金
supported by the National Natural Science Foundation of China(Nos.61077006,60727004,and 61077060)
the National "863" Program of China(Nos. 2007AA03Z413 and 2009AA06Z203)
the Ministry of Education Project of Science and Technology Innovation (No.Z08119)
the Ministry of Science and Technology Project of International Cooperation(No.2008CR1063)
Shaanxi Province Project of Science and Technology Innovation (Nos.2009ZKC01-19 and 2008ZDGC-14)
Northwestern University Teaching and Research Project (Nos.YC07059 and KJG10036)
