本文選題：長(zhǎng)周期光柵(LPG)　切入點(diǎn)：溫度傳感　出處：《光電子·激光》2017年04期

【摘要】：為了獲得高精度的溫度傳感系統(tǒng),提出并驗(yàn)證了一種基于長(zhǎng)周期光柵(LPG)溫度傳感系統(tǒng)。首先利用普通單模光纖(MSF)拉制了微納光纖,拉制的微納光纖直徑約為6.2μm;其次,利用CO2脈沖激光器在拉制的微納光纖上制作了微納LPG,光柵的周期為100μm;利用獲得的微納LPG結(jié)合馬赫-曾德干涉儀(MZI)設(shè)計(jì)了溫度傳感系統(tǒng),在系統(tǒng)中利用聲光調(diào)制器(AOM)作為移頻調(diào)制器,獲得了200 MHz的微波信號(hào),且隨LPG測(cè)量溫度的增加,微波信號(hào)的相對(duì)強(qiáng)度逐漸增加,其斜率約為0.46(a.u)/℃。在30min的時(shí)間間隔內(nèi),測(cè)量了信號(hào)強(qiáng)度的穩(wěn)定性,強(qiáng)度變化約為0.5dB,表明系統(tǒng)展現(xiàn)了較高的穩(wěn)定性。
[Abstract]:In order to obtain a high precision temperature sensing system, a temperature sensing system based on LPG-based long period grating is proposed and validated. Firstly, a micro and nano fiber is fabricated by using ordinary single mode fiber MSF.The diameter of the drawn micro / nano fiber is about 6.2 渭 m. The CO2 pulse laser is used to fabricate the micronano LPGs on the pulled micro-nano fiber, the grating period is 100 渭 m, and the temperature sensing system is designed by using the obtained micro-nano LPG and Mach Zende interferometer. In the system, the acoustooptic modulator (AOM) is used as the frequency shift modulator to obtain the microwave signal of 200 MHz. With the increase of LPG temperature, the relative strength of the microwave signal increases gradually, and its slope is about 0.46(a.u)/ 鈩，

本文編號(hào)：1680782