Modulated Laser Signal Front-end Processing Technology
The paper presents a research on the front-end receiving circuit for processing the modulated laser signal. In order to get an overall understanding of optical filtering, some knowledge about the light collection and the spatial filtering is discussed firstly. Subsequently, to improve the design of front-end circuit, several traditional laser receiving circuits are completely studied, and the advantage and the disadvantage of each circuit are summed up. On this base, furthermore, the TCVCC (Transimpedance current-to-voltage conversion circuit) with parallel LC feedback is put forward and explored. To verify the TCVCC with parallel LC frequency selective network, in detecting and recognizing weak modulated laser signal, is superior to the traditional laser receiving circuit, and an experiment is carried out finally. The experiment results show it is capable to extract the weak modulated laser signal from the strong noise.
modulated laser signal current to voltage conversion transimpedance amplifie laser receiving
Guozhong Yao Jianqun Wang Zhengshan Li Xuejun Ran
Academy of mechanic &vehicle Beijing Institute of Technology Beijing, China
国际会议
长春
英文
423-426
2010-08-24（万方平台首次上网日期，不代表论文的发表时间）