光子晶体光纤高灵敏度压力传感特性研究
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摘要
为了提高压力传感器的灵敏度,利用光子晶体光纤理论及其高双折射特性和可灵活设计的结构特点,设计了一种新型边孔高双折射光子晶体光纤压力传感结构。采用全矢量有限元法并结合COMSOL软件对传感结构的受力和模场分布进行仿真分析,获得压力传感特性随几何结构和自由空间波长的变化关系,通过优化设计得到最优结构参量,进一步获得高压力灵敏度。结果表明,在最优结构下,自由空间波长为1.55μm、压力为200MPa时,偏振相位灵敏度为166.2rad/(MPa·m),所能施加的最大压力为720MPa,相位模式双折射灵敏度保持在4.1×10~(-5)MPa~(-1)左右。该研究对提高压力传感器的灵敏度是有帮助的。
In order to improve the sensitivity of a pressure sensor, a novel pressure sensing structure of photonic crystal fiber with side hole and high birefringence was designed, based on the theory of photonic crystal fiber and its high birefringence and flexible design structure. The force and mode field distribution of sensing structure were simulated and analyzed by using full vector finite element method and COMSOL software. The dependence of pressure sensing characteristics on geometrical structure and free space wavelength was obtained. The optimum structural parameters were obtained by optimum design. The high pressure sensitivity was further obtained. The results show that, under the optimal structure, when free space wavelength is 1.55μm and pressure is 200 MPa, polarization phase sensitivity is 166.2 rad/(MPa·m) and maximum pressure that can be applied is 720 MPa. The sensitivity of phase mode birefringence is maintained at about 4.1×10~(-5)MPa~(-1). The research is helpful to improve the sensitivity of pressure sensors.
In order to improve the sensitivity of a pressure sensor, a novel pressure sensing structure of photonic crystal fiber with side hole and high birefringence was designed, based on the theory of photonic crystal fiber and its high birefringence and flexible design structure. The force and mode field distribution of sensing structure were simulated and analyzed by using full vector finite element method and COMSOL software. The dependence of pressure sensing characteristics on geometrical structure and free space wavelength was obtained. The optimum structural parameters were obtained by optimum design. The high pressure sensitivity was further obtained. The results show that, under the optimal structure, when free space wavelength is 1.55μm and pressure is 200 MPa, polarization phase sensitivity is 166.2 rad/(MPa·m) and maximum pressure that can be applied is 720 MPa. The sensitivity of phase mode birefringence is maintained at about 4.1×10~(-5)MPa~(-1). The research is helpful to improve the sensitivity of pressure sensors.
引文
[1] YABLONOVITCH E.Inhibited spontaneous emission in solid-state physics and electronics [J].Physical Review Letters,1987,58(20):2059-2062.
[2] JOHN S.Strong localization of photons in certain disordered dielectric superlattices [J].Physical Review Letters,l997,58(23):2486-2489.
[3] YU X L,JIANG Y Ch,SONG M Ch.Effect of pressure on the property of the solid-core photonic crystal fibers[J].Laser Technology,2008,32(2):187-190(in Chinese).
[4] PARK J,LEE S,KIM S,et al.Enhancement of chemical sensing capability in a photonic crystal fiber with a hollow high index ring defect at the center[J].Optics & Laser Technology,2011,19(3):1921-1929.
[5] YANG Y H,LIU Sh,LU L,et al.Temperature-insensitive pressure sensing technology based on polarization maintaining photonic crystal fiber Sagnac interferometer[J].Infrared and Laser Engineering,2016,45(8):14-19(in Chinese).
[6] Lü J T,WANG Ch M,ZHU Ch H,et al.Dual-core photonic crystal fiber transverse-stress sensor based on surface plasmon resonance[J].Acta Optica Sinica,2017,37(8):828002(in Chinese).
[7] LIANG H Q,LIU B,CHEN J,et al.High sensitive elliptic side core surface plasmon resonance refractive index sensing characteristics based on dual-core photonic crystal fiber[J].Laser & Optoelectronics Progress,2017,54(9):90601(in Chinese).
[8] ZHANG X D,YUAN M M,CHANG M,et al.Characteristics in square air hole structure photonic crystal fiber[J].Opto-Electronic Engineering,2018,45(5):170633(in Chinese).
[9] PENG R R,LIU B,CHEN J.Study on side-hole surface plasmon resonance refractive index sensing based on single-core photonic crystal optical fiber[J].Laser Technology,2018,42(5):713-717(in Chinese).
[10] LIAO K,LIAO J F,XIE Y M,et al.A defect photonic crystal fiber with high birefringence and negative dispersion[J].Laser & Optoelectronics Progress,2018,55(7):070604(in Chinese).
[11] KRAMER S L B,MELLO M,RAVICHANDRAN G,et al.Phase shifting full-field interferometric methods for determination of in-plane tensorial stress[J].Experimental Mechanics,2009,49(2):303-315.
[12] LI Zh Zh.Theoretical and experimental research on sensing characteristics of birefringent fiber gratings[D].Changsha:National University of Defense Technology,2006:17-32(in Chinese).
[13] QIAN L G.The study on birefringence photonic crystal fiber pressure sensor[D].Nanjing:Nanjing University of Posts and Telecommunications,2012:1-71(in Chinese).
[14] LI F Sh,WEI D W,CUI J H,et al.Application and improvement on the optical properties of polycarbonate[J].Plastics,2003,32 (3):65-69(in Chinese).
[15] WU G F.The study on birefringence photonic crystal fiber pressure sensor[D].Nanjing:Nanjing University of Posts and Telecommunications,2011:37-48(in Chinese).
[2] JOHN S.Strong localization of photons in certain disordered dielectric superlattices [J].Physical Review Letters,l997,58(23):2486-2489.
[3] YU X L,JIANG Y Ch,SONG M Ch.Effect of pressure on the property of the solid-core photonic crystal fibers[J].Laser Technology,2008,32(2):187-190(in Chinese).
[4] PARK J,LEE S,KIM S,et al.Enhancement of chemical sensing capability in a photonic crystal fiber with a hollow high index ring defect at the center[J].Optics & Laser Technology,2011,19(3):1921-1929.
[5] YANG Y H,LIU Sh,LU L,et al.Temperature-insensitive pressure sensing technology based on polarization maintaining photonic crystal fiber Sagnac interferometer[J].Infrared and Laser Engineering,2016,45(8):14-19(in Chinese).
[6] Lü J T,WANG Ch M,ZHU Ch H,et al.Dual-core photonic crystal fiber transverse-stress sensor based on surface plasmon resonance[J].Acta Optica Sinica,2017,37(8):828002(in Chinese).
[7] LIANG H Q,LIU B,CHEN J,et al.High sensitive elliptic side core surface plasmon resonance refractive index sensing characteristics based on dual-core photonic crystal fiber[J].Laser & Optoelectronics Progress,2017,54(9):90601(in Chinese).
[8] ZHANG X D,YUAN M M,CHANG M,et al.Characteristics in square air hole structure photonic crystal fiber[J].Opto-Electronic Engineering,2018,45(5):170633(in Chinese).
[9] PENG R R,LIU B,CHEN J.Study on side-hole surface plasmon resonance refractive index sensing based on single-core photonic crystal optical fiber[J].Laser Technology,2018,42(5):713-717(in Chinese).
[10] LIAO K,LIAO J F,XIE Y M,et al.A defect photonic crystal fiber with high birefringence and negative dispersion[J].Laser & Optoelectronics Progress,2018,55(7):070604(in Chinese).
[11] KRAMER S L B,MELLO M,RAVICHANDRAN G,et al.Phase shifting full-field interferometric methods for determination of in-plane tensorial stress[J].Experimental Mechanics,2009,49(2):303-315.
[12] LI Zh Zh.Theoretical and experimental research on sensing characteristics of birefringent fiber gratings[D].Changsha:National University of Defense Technology,2006:17-32(in Chinese).
[13] QIAN L G.The study on birefringence photonic crystal fiber pressure sensor[D].Nanjing:Nanjing University of Posts and Telecommunications,2012:1-71(in Chinese).
[14] LI F Sh,WEI D W,CUI J H,et al.Application and improvement on the optical properties of polycarbonate[J].Plastics,2003,32 (3):65-69(in Chinese).
[15] WU G F.The study on birefringence photonic crystal fiber pressure sensor[D].Nanjing:Nanjing University of Posts and Telecommunications,2011:37-48(in Chinese).