摘要
利用镁离子内扩散方法，实现了铌酸锂单晶光纤具有抛物折射率分布的芯－包层波导结构，并对镁离子内扩散包层后的晶纤进行了损耗测量，测得其损耗系数比镁离子内扩散前降低１４ｄＢ／ｃｍ的好结果。此外，还对镁离子内扩散前后晶纤的光斑形状进行了观察和比较。
A core-cladding waveguide structure of the Lithium niobate single crystal fiber with parabolic refractive index profile is achieved by a Mg-ion indiffusion process. The propagstion loss of the cladded crystal fiber is measured, and its loss coefficient is about 14 dB/cm lower than that of the uncladded crystal fiber.The output optical beam patterns of the cladded and uncladded crystal fibers are observed.It is found that three ridges of the cladded crystal fiber core have disappered gtadually in the Mg-ion indiffusion process.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1995年第5期353-356,共4页
Chinese Journal of Lasers
基金
西安交通大学精细功能电子材料与器件实验室开放基金
关键词
单晶光纤
包层
铌酸锂
光学特性
crystal fiber,Mg-ion indiffusion,parabolic refractive index cladding,optical loss,optical beam patterns
