Department of Physics and Physical Oceanography, Memorial University of Newfoundland, St. John's, Newfoundland A1B 3X7, Canada.
Opt Lett. 2011 Jan 15;36(2):268-70. doi: 10.1364/OL.36.000268.
We demonstrate a femtosecond laser microfabricated fiber Mach-Zehnder interferometer and reveal the dependences of the sensitivities of different environmental parameters on the specifications of the interferometer. A 30-mm-long fiber interferometer at a wavelength of 1593 nm exhibits a temperature sensitivity of 0.103 nm/°C, axial strain sensitivity of -1.35 pm/με, and refractive index sensitivity of -15.294 nm/RIU, respectively. In addition to dependence on interferometer length, the sensitivities are also strongly dependent on the operation wavelength of the selected interference order. When the operation wavelength is selected at 1525 nm, the sensitivities are 0.085 nm/°C, -0.09 pm/με, and -13.824 nm/RIU, respectively.
我们展示了一种飞秒激光微加工光纤马赫-曾德尔干涉仪，并揭示了不同环境参数的灵敏度对干涉仪规格的依赖性。在 1593nm 波长下，30mm 长的光纤干涉仪的温度灵敏度为 0.103nm/°C，轴向应变灵敏度为-1.35pm/με，折射率灵敏度为-15.294nm/RIU。除了对干涉仪长度的依赖性外，灵敏度还强烈依赖于所选干涉级的工作波长。当工作波长选择在 1525nm 时，灵敏度分别为 0.085nm/°C、-0.09pm/με 和-13.824nm/RIU。
