剪切模式压电光纤调制器  

Shear Model Piezoelectric Fiber Moduators

作　　者：张天浩[1] 牛凯[1] 贾峰[1] 满江伟[1] 王旭成[1] 王顺利[1] 

机构地区：[1]南开大学物理科学学院光子学中心,弱光非线性光子学材料先进技术及设备教育部实验室,天津市信息光子材料与技术重点实验室,天津300071

出　　处：《光电子．激光》2007年第1期27-29,共3页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60208002);南开大学本科生创新科研项目

摘　　要：设计了一种基于剪切模式振荡的光纤光调制器。实验中,利用压电陶瓷控制2段对接光纤的相对截面积,在初始位置光束无损耗的全部通过,在压电陶瓷管切向形变为光纤内径r时,输出光强为零。本光纤信号调制器属于光的振幅调制器,调制度可达到100%,信噪比(SNR)约为25dB,带宽约为200kHz。A new optical fiber signal modulator based on the shear mode oscillation is designed. In this experiment, we use a piezoelectric ceramic pipe to control the two fibers＇ relative-section-area. At the original position, the light beam transmits without dissipation. But,when the shape change of the pipe is equal to the inner radius of the fiber,the output light intensity is zero. This modulator is operated for amplitude modulation, the modulation ratio is 100%, SNR is about 25 dB and the bandwidth is about 200 kHz. The modulator is cheap and can be applied to optical signal transmission in fiber and the output of optical source for fiber.

关 键 词：调制 光纤 剪切振荡 

分 类 号：TN253[电子电信—物理电子学]