【摘要】 光纤Bragg光栅的中心反射波长λB会随温度的变化而漂移,影响其在波分复用及压力测量等方面的应用。本文通过对石英和有机玻璃两种热膨胀系数不同的材料进行合理的结构设计,提出了一种无源温度补偿装置,探讨了施加预应力对光纤Bragg光栅补偿效果的影响,并对单面封装和双面封装的补偿效果进行了对比研究。该装置在-19℃~60℃的温度范围内,中心反射波长仅漂移0.035nm,温度稳定性大约提高了20倍。更多还原

【Abstract】 FBG central reflection wavelength λ_B varies with the change of the temperature,so it influences its application on WDM and strain measure.A passive temperature compensation method was presented by using two materials having different thermal expansion coefficient,the influence of prestrain to compensation effect was given and the effects of single and double sides package were compared.When the temperature changed from-19℃ to 60℃,the central reflection wavelength drifted 0.035nm,the temperature stability enhanced 20 times.更多还原