引入衔套调制结构形成相移长周期光纤光栅的特性研究
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摘要
通过在长周期光纤光栅(LPG)上某个位置引入一段衔套调制结构,设计并研制出了一种新型相移长周期光纤光栅(PSLPG),并采用传输矩阵法模拟了其光谱特性。模拟结果表明:在LPG某点引入衔套调制结构,当衔套调制结构都为均匀短光栅,且与被调制光栅的折射率调制深度相同但周期不同时,所形成的光栅仍旧可等效为一个单PSLPG,而引入相移量的大小相当于两个调制结构的分别引入相移量之和。最后采用CO2激光单侧曝光法写制技术对引入衔套调制结构形成的PSLPG进行了写制,实验结果与理论分析相符。
We propose a new method to design a phase-shifted long period grating(PSLPG) by adding an embedded-modulation structure in a long period grating at some position.The spectral characteristics are obtained by the transfer matrix simulated approach.The studies show that when a uniform short grating embedded-modulation structure,which has the same modulated depth but different period with the original one,is added in a long period grating,the grating also could be seen as a single phase-shifted long period gating,and the magnitude of phase-shifting is the sum of the two modulation structures in the embedded-modulation structure.Furthermore,we fabricated the embedded-modulation PSLPG by CO2 laser exposure,and the experiment agrees well with the theory.
We propose a new method to design a phase-shifted long period grating(PSLPG) by adding an embedded-modulation structure in a long period grating at some position.The spectral characteristics are obtained by the transfer matrix simulated approach.The studies show that when a uniform short grating embedded-modulation structure,which has the same modulated depth but different period with the original one,is added in a long period grating,the grating also could be seen as a single phase-shifted long period gating,and the magnitude of phase-shifting is the sum of the two modulation structures in the embedded-modulation structure.Furthermore,we fabricated the embedded-modulation PSLPG by CO2 laser exposure,and the experiment agrees well with the theory.
引文
[1]Yin S,Chung K W,Zhu X.A highly sensitive long periodgrating based tunable filter using a unique double-claddinglayer structure[J].Optics Communication,2001,20(188):301-305.
[2]Kersey A D,Davis M A,Patrick H J,et al.Fiber gratingsensors[J].J Light-wave Technology,1997,15(8):1442-1463.
[3]ZHOU Rui,QIAO Xue-guan,WANG Ruo-hui.Seismic waveinterrogation based on the linear edge filter characteris-tics of long period fiber grating[J].Journal of Optoelec-tronics.Laser,2011,22(7):987-991.周悦,乔学光,王若晖.基于长周期光纤光栅线性边缘滤波的地震波解调系统[J].光电子.激光,2011,22(7):987-991.
[4]DONG Xin-yong,ZHAO Chun-liu.Chirp rate tunable fiberBragg grating filters based on cantilever beam[J].Jour-nal of Optoelectronics.Laser,2010,21(10):1456-1458.董新永,赵春柳.基于悬臂梁啁啾调谐的光纤光栅滤波器[J].光电子.激光,2010,21(10):1456-1458.
[5]YANG Jian-chun,TAO Chuan-yi,LI Xue-ming,et al.Long-period fiber grating sensor with a styrene-acrylonitrilenano-film incorporating cryptophane A for methane detec-tion[J].Optics Express,2011,19(15):14696-14706.
[6]ZHU Qi-guang,CHEN Ying.Study on high birefringenesampled chirped FBG and its application[J].Journal ofOptoelectronics.Laser,2010,21(6):821-824.朱奇光,陈颖.高双折射取样啁啾光纤光栅的研究与应用[J].光电子.激光,2010,21(6):821-824.
[7]ZHOU Xiao-jun,SHI Sheng-hui,ZHANG Zhi-yao,et al.Me-chanically-inducedπ-shifted long period fiber gratings[J].Optics Express,2011,19(7):6253-6259.
[8]JIANG Xiu-li,GU Zheng-tian.Parameters optimization ofπ-phase-shifted-long period fiber grating for gas sensing[J].Optoelectronics Letters,2011,7(1):0022-0025.
[9]JIANG Jun-ying,ZHANG Ai-ling,TIAN Li.Dual wavelengthfiltering properties and applications of theπ-phase-shiftedsampled fiber Bragg gratings[J].Optoelectronics Let-ters,2011,7(1):0010-0014.
[10]Isa Navruz,Ahmet Altuncu.Optimization of phase shiftedlong-period fiber gratings for multiband rejection filters[J].Journal of Lightwave Technology,2008,26(14):2155-2161.
[11]Radan Slavik,Yongwoo Park,Mykola Kulishov,et al.Terahertz-bandwidth high-order temporal differentiatorsbased on phase-shifted long-period fiber gratings[J].Op-tics Letters,2009,34(20):3116-3118.
[12]Han Y G,Lee J H,Lee S B.Discrimination of bending andtemperature sensitivities with phase-shifted long periodfiber grating depending on initial coupling strength[J].Optics Express,2004,12(14):3204-3208.
[13]ZHU Yi-nian,Shum Ping,CHEN Xiao-yang.Resonance-temperature-incentive phase-shifted long-period fibergrating induced by surface deformation with anomalousstrain characteristics[J].Optics Letters,2005,30(14):1778-1790.
[14]LI Xiao-lan,ZHANG Wei-gang,ZHANG Shan-shan,et al.Study of phase-shifted long period grating formed byadding modulated structure[J].Acta Optica Sinica,2011,31(6):2011-2015.
[2]Kersey A D,Davis M A,Patrick H J,et al.Fiber gratingsensors[J].J Light-wave Technology,1997,15(8):1442-1463.
[3]ZHOU Rui,QIAO Xue-guan,WANG Ruo-hui.Seismic waveinterrogation based on the linear edge filter characteris-tics of long period fiber grating[J].Journal of Optoelec-tronics.Laser,2011,22(7):987-991.周悦,乔学光,王若晖.基于长周期光纤光栅线性边缘滤波的地震波解调系统[J].光电子.激光,2011,22(7):987-991.
[4]DONG Xin-yong,ZHAO Chun-liu.Chirp rate tunable fiberBragg grating filters based on cantilever beam[J].Jour-nal of Optoelectronics.Laser,2010,21(10):1456-1458.董新永,赵春柳.基于悬臂梁啁啾调谐的光纤光栅滤波器[J].光电子.激光,2010,21(10):1456-1458.
[5]YANG Jian-chun,TAO Chuan-yi,LI Xue-ming,et al.Long-period fiber grating sensor with a styrene-acrylonitrilenano-film incorporating cryptophane A for methane detec-tion[J].Optics Express,2011,19(15):14696-14706.
[6]ZHU Qi-guang,CHEN Ying.Study on high birefringenesampled chirped FBG and its application[J].Journal ofOptoelectronics.Laser,2010,21(6):821-824.朱奇光,陈颖.高双折射取样啁啾光纤光栅的研究与应用[J].光电子.激光,2010,21(6):821-824.
[7]ZHOU Xiao-jun,SHI Sheng-hui,ZHANG Zhi-yao,et al.Me-chanically-inducedπ-shifted long period fiber gratings[J].Optics Express,2011,19(7):6253-6259.
[8]JIANG Xiu-li,GU Zheng-tian.Parameters optimization ofπ-phase-shifted-long period fiber grating for gas sensing[J].Optoelectronics Letters,2011,7(1):0022-0025.
[9]JIANG Jun-ying,ZHANG Ai-ling,TIAN Li.Dual wavelengthfiltering properties and applications of theπ-phase-shiftedsampled fiber Bragg gratings[J].Optoelectronics Let-ters,2011,7(1):0010-0014.
[10]Isa Navruz,Ahmet Altuncu.Optimization of phase shiftedlong-period fiber gratings for multiband rejection filters[J].Journal of Lightwave Technology,2008,26(14):2155-2161.
[11]Radan Slavik,Yongwoo Park,Mykola Kulishov,et al.Terahertz-bandwidth high-order temporal differentiatorsbased on phase-shifted long-period fiber gratings[J].Op-tics Letters,2009,34(20):3116-3118.
[12]Han Y G,Lee J H,Lee S B.Discrimination of bending andtemperature sensitivities with phase-shifted long periodfiber grating depending on initial coupling strength[J].Optics Express,2004,12(14):3204-3208.
[13]ZHU Yi-nian,Shum Ping,CHEN Xiao-yang.Resonance-temperature-incentive phase-shifted long-period fibergrating induced by surface deformation with anomalousstrain characteristics[J].Optics Letters,2005,30(14):1778-1790.
[14]LI Xiao-lan,ZHANG Wei-gang,ZHANG Shan-shan,et al.Study of phase-shifted long period grating formed byadding modulated structure[J].Acta Optica Sinica,2011,31(6):2011-2015.
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