Study On Photonic-Crystal Fiber Based Fabry-Perot Sensors

Photonic-Crystal Fiber also called Microstructure Fiber, as a new photonic transmission medium, have many unique features which is induced by the microstructures, provided a chances to solve the difficult problems in communicating and sensing technology. Since it's appearing, researches about it have thrived. The Fabry-Perot sensors, as one family member of the fiber optical sensors , is immunity to interference, intrinsic safety, lager amount of parameters measurable, high accuracy, sensitivity, wide dynamitic range measurable and capability for remote control. Therefore, it developed rapidly and have great prospect in many fields.A briefly introduction of the Photonic-Crystal Fiber was take at the beginning of the dissertation, then the principle and categories. After that, analyzed the merit and disadvantage of the three sorts of Fabry-Perot sensors and proposed the Hollow-Core Photonic-crystal Fiber based Fabry-Perot interferometer etalon, include its Fabrication and Multiplex using. At last, a Solid-Core Photonic-crystal Fiber based reflective index and temperature simultaneity measurement sensor is proposed.Based on the works have previous finished, the works and achievements we get are list as following.1. Did the experiment of splicing between Single-Mode Fiber and the Photonic-Crystal Fiber. Based on these experiments, a Fabry-Perot interferometer etalon based on the Hollow Core Photonic-Crystal Fiber is fabricated, the fabrication process and methods to improve the output signal of the etalon is discussed and researched. The temperature and stress performance of the fabricated etalon is evaluated. Also, the influence of temporal coherence of the optical source is roughly discussed.2. Evaluated the fabricated Hollow Core Photonic-Crystal Fiber etalon in a SFDM/CWDM system, and we get the result that the etalon is a high linearity and low hysteretic behavior sensor for strain testing. Also, the rusults are disscussed.3. In order to solve the problem that when test the reflective index of the liquids, the temperature will take an influence in it, we proposed a reflective index and temperature simultaneous test sensor based on Solid-Core Crystal-optical Fiber for the first time. Discussed the test principle and fabrication, we also evaluated the sensor.