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7 November 2012 Hollow-core photonic bandgap fiber Mach-Zehnder interferometer based on a long period grating and an offset-splice joint
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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84216T (2012) https://doi.org/10.1117/12.966812
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China
Abstract
We report a compact in-fiber Mach-Zehnder interferometer (MZI) made along a hollow-core photonic bandgap fiber (HC-PBF). The MZI uses a long period grating (LPG) and an offset-splice joint (OSJ) which act as beam splitter and combiner respectively. The LPG was produced by use of a high frequency pulsed CO2 laser, and the OSJ was made in serial with the LPG by using a commercial fusion splicer. The interference is between the fundamental core mode (FCM) and a high-order core mode (HOCM). The proposed interferometer was experimentally tested for temperature and strain measurements, and the sensitivities of the interference fringe dip wavelength to temperature and strain are 107.5 pm/ (°C-m) and -1.24 pm/με, respectively.
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Xiujuan Yu, Jian Ju, Wei Jin, Jintao Zhang, and Shengchun Liu "Hollow-core photonic bandgap fiber Mach-Zehnder interferometer based on a long period grating and an offset-splice joint", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84216T (7 November 2012); https://doi.org/10.1117/12.966812
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