摘要
扫频光源是扫频光学相干层析(SSOCT)的关键器件。高质量的扫频光源可以提高系统的成像速度、分辨率和信噪比。该文采用光纤声光可调滤光器(FAOTF)、保偏半导体光放大器(PMBOA)、光纤隔离器和光纤耦合器搭建了环形腔结构的扫频光源,实验得到一种全光纤扫频光源,其扫频速率为100 kHz,扫频范围为119 nm(1550.1462~1619.4700 nm),单光谱3 dB带宽可达0.0966 nm,平均输出功率12 mW。该扫频光源具有扫频范围广、速度快、相干性好等优点,在SSOCT系统中具有一定的实用价值。
The swept light source is a key component of the swept source optic coherence tomography(SSOCT).A high quality swept light source can improve the imaging speed,resolution and signal-to-noise ratio of the SSOCT.In this work,a ring-cavity swept source was built by using fiber acousto-optical tunable filter(FAOTF),polarization-maintaining booster optical amplifier(PMBOA),fiber isolator and fiber coupler.The experimental results show that an all-fiber swept light source with the sweep speed of 100 kHz,sweep range of 119 nm(from 1550.1462 nm to 1619.4700 nm),single spectrum 3 dB bandwidth of 0.0966 nm and average optical output power of 12 mW has been realized.The swept source has the advantages of wide sweep frequency range,fast speed,and good coherence and so on.It has certain practical value as a light source in SSOCT system.
作者
吴中超
申向伟
王大贵
夏茜
王晓新
张泽红
何晓亮
WU Zhongchao;SHEN Xiangwei;WANG Dagui;XIA Qian;WANG Xiaoxin;ZHANG Zehong;HE Xiaoliang(The 26th Institute of China Electronics Technology Corporation, Chongqing 400060, China)
出处
《压电与声光》
CAS
北大核心
2020年第3期293-295,共3页
Piezoelectrics & Acoustooptics
关键词
扫频激光器
扫频光学相干层析
光纤声光可调滤光器
sweep laser
swept source optic coherence tomography
fiber acousto-optical tunable filter
