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.
出处
《中国激光》
EI
CAS
CSCD
北大核心
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)
关键词
光电子学
声光可调谐滤波器
有效折射率
温度控制
Acoustooptical devices
Digital control systems
Optical filters
Refractive index
Temperature
