封装对长周期光纤光栅的影响  

Effect of Package on Properties of Long-period Gratings

作　　者：宁提纲[1] 简水生[1] 魏淮[1] 童治[1] 裴丽[1] 

机构地区：[1]北方交通大学光波技术研究所,北京100044

出　　处：《半导体光电》2002年第1期37-39,共3页Semiconductor Optoelectronics

基　　金：国家 8 6 3计划项目;国家自然科学基金;北方交通大学论文攀登基金资助项目

摘　　要：对于长周期光栅 ,谐振波长阶数越高 ,封装材料折射率对其特性的影响越大 ;封装材料折射率小于包层时 ,随封装材料折射率增大 ,波长减小 ;封装材料折射率大于包层时 ,波长向长波长移动 1.5nm。研制了一种负热胀系数的材料用于封装光栅 ,使光栅波长的温度系数不大于 5 .1× 10 - 3nm/K。Theoretical and experimental study on how to pack long period gratings has been made. It is found that index of package material affects the grating resonance peak. Displacement of resonance wavelength decreases when the index is 1< n pk < n cl ; resonance peak completely disappeared when n pk = n cl ; displacement keeps constant at 1.5 nm when n cl < n pk < 1.65 . A novel package material with negative thermal expansion coefficient has been developed, with which the displacement of resonant peak is less than 5.1×10 -3 nm/K between 265 K and 334 K. Different package structures are demonstrated as well.

关 键 词：长周期光栅 封装 折射率 温度补偿 

分 类 号：TN253[电子电信—物理电子学]