Bandwidth Tunable Microfiber-Assisted Mach-Zehnder Interferometer Based on Tapered-Drawing Fiber Bragg Grating

被引：7
|
作者：
Geng Jian [1 ]
Zhu Xiaojun [1 ,2 ,3 ]
Zhang Guoan [1 ]
Xu Chen [1 ,2 ]
Ji Yancheng [1 ]
Jin Li [1 ]
Cao Juan [1 ,2 ]
机构：
[1] Nantong Univ, Sch Elect & Informat, Nantong 226019, Jiangsu, Peoples R China
[2] Nantong Res Inst Adv Commun Technol, Nantong 226000, Jiangsu, Peoples R China
[3] Soochow Univ, Key Lab Adv Opt Mfg Technol Jiangsu Prov, Suzhou 215006, Jiangsu, Peoples R China
来源：
ACTA OPTICA SINICA | 2019年 / 39卷 / 03期
关键词：
fiber optics; micro long period fiber grating; tapered fiber; fiber Bragg grating; Mach-Zehnder interferometer;
D O I：
10.3788/AOS201939.0306004
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A bandwidth tunable Mach-Zehnder interferometer (MZI) based on tapered-drawing fiber Bragg grating is presented. The two sides of this microfiber-assisted MZI arc the tapered micro chirped long period fiber gratings (CLPG), which arc symmetrical about the central waist. The period and refraction index of the grating after fused tapering arc modelled and simulated. The refractive index test results show that the relationship between the refractive index of NaCI solution and the reciprocal of passband width is linear. The transmission bandwidth can be tuned by changing the solution concentration. The adjustable accuracy is 0.61318 nm(-1) . RIU-1 obtained after the detection of the transmission bandwidth at 1550 nm.
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页数：8
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