集成光学声光可调谐滤波器的温度特性及其精密数字控制  

Temperature Property of Integrated AOTF and Its High Accuracy Digital Control

作　　者：唐多强[1] 张海斌[1] 胡鸿璋[1] 林林[1] 耿凡[2] 

机构地区：[1]天津大学理学院应用物理学系,天津300072 [2]中国航天机电工业总公司8358所,天津300192

出　　处：《中国激光》2003年第7期629-632,共4页Chinese Journal of Lasers

基　　金：国家自然科学基金(No.10084001)

摘　　要：声光可调谐滤波器(AOTF)是波分复用(WDM)网络中的关键器件之一,它的一个重要技术指标是中心波长的稳定性。针对以LiNbO_3为基底的集成光学AOTF。从理论上分析了它的中心波长随温度的漂移,计算表明该漂移值达0.8 um/℃。设计制作了一套高性能的比例、积分、微分(PID)温度控制系统,实际测定了AOTF系统的温度特性。结果表明,论计算和实验完全一致。利用这套系统,成功地将AOTF的温度控制在±0.1℃,将中心波长的漂移控制在±0.08um的范围内,保证了器件在光纤通讯系统中的实际应用。As the key component in the WDM network, the acousto-optic tunable filter (AOTF) is broadly used in the field of optical communications and optical interconnections. But an obstacle in its application is its frequency draft along with the change of the temperature. The temperature property of the AOTF has been analyzed theoretically. The calculation shows the temperature draft of 0.8 nm/°C. Additionally, a set of PID temperature control system is fabricated, to successfully stabilize the temperature of the AOTF within ±0.1°C. The temperature properly of AOTF is also measured by the PID system. The results agreed with the theoretical analysis very well.

关 键 词：光电子学 声光可调谐滤波器 有效折射率 温度控制 

分 类 号：TN713[电子电信—电路与系统]