摘要
介绍了应用于多普勒激光雷达系统中起频移作用的光纤声光移频器的设计及应用,描述了光纤声光移频器的工作原理,着重介绍光纤声光移频器的关键指标插入损耗、消光比、频率精度和稳定度的设计方法,得到了工作波长1.55μm,插入损耗1.8dB,消光比45dB,频率稳定度优于频率×10-7的实验结果。
This article introduces the design and application of fiber acousto-optic shifter for Doppler laser radar. The operating principle of fiber acousto-optic shifter has been described and the design method of the key specifica- tions such as the insertion loss, extinction ratio, frequency accuracy and stability of the device has been focused on. The experimental results of operating wavelength of 1.55 μm, insertion loss of 1.8 dB, extinction ratio of 45 dB and frequency stability of better than frequency×10^-7 have been obtained.
出处
《压电与声光》
CSCD
北大核心
2013年第3期339-341,共3页
Piezoelectrics & Acoustooptics
关键词
光纤声光移频器
插入损耗
消光比
频率稳定度
fiber acousto-optic shifter
insertion loss
extinction ratio
frequency stability
