Page 20 - 应用声学2019年第2期
P. 20

第 38 卷 第 2 期                                                                       Vol. 38, No. 2
             2019 年 3 月                          Journal of Applied Acoustics                    March, 2019


             ⋄ 研究报告 ⋄



                   超高速光纤耦合声光调制器的设计及其应用





                  陈华志      †  周建国 吴中超 吴 畏 刘保见 王智林 高维松 曹家强



                                          (中国电子科技集团公司第二十六研究所           重庆  400060)

                摘要    为实现小于 10 ns 光脉冲上升时间的超高速声光调制，该文提出一种光纤耦合声光调制器光脉冲时域
                响应的理论设计仿真方法。利用该方法对 1064 nm 和 1550 nm 工作波长光纤耦合声光调制器进行了仿真，结
                果预测器件的光脉冲上升时间分别为 9.4 ns 和 9.1 ns；通过器件制作和测试验证，两个波长的器件实测光脉冲
                上升时间分别为 9.74 ns 和 9.22 ns，实测与理论仿真结果偏差较小。文章最后对器件在超快光纤激光器种子源
                光脉冲选单、光纤水听阵列时分复用及潜在的宽带移频应用进行了介绍。
                关键词 光纤耦合声光调制器，光脉冲上升时间，光脉冲选单，时分复用，宽带移频
                中图法分类号: TN65, TB552           文献标识码: A          文章编号: 1000-310X(2019)02-0166-07
                DOI: 10.11684/j.issn.1000-310X.2019.02.003






                            Design and application of ultra high-speed fiber coupled
                                              acousto-optic modulator



                         CHEN Huazhi     ZHOU Jianguo     WU Zhongchao     WU Wei    LIU Baojian
                                       WANG Zhilin    GAO Weisong     CAO Jiaqiang

                          (26th Institute of China Electronic Technology Group Corporation, Chongqing 400060, China)

                 Abstract  To realize the ultra-high speed acousto-optic modulation of less than 10 nanosecond optical pulse
                 rise time, this article proposes a theoretical method to simulate the optical pulse temporal response of fiber
                 coupled acousto-optic modulator. Simulations are conducted for both 1064 nm and 1550 nm fiber coupled
                 acousto-optic modulators, which predict the optical pulse rise time of devices are respectively 9.4 ns and 9.1 ns.
                 Through devices fabricating and testing, the actual measured optical pulse rise time performances of the two
                 devices are respectively 9.74 ns and 9.22 ns, and the deviations between results of actual measurement and
                 theoretical simulation are small. At the end of the article, it introduces the devices’ applications in optical
                 pulse picking for ultrafast fiber laser seed source, time division multiplexing of fiber-optic hydrophone arrays,
                 and potential broadband frequency shifting.
                 Key words Fiber coupled acousto-optic modulator, Optical pulse rise time, Optical pulse picking, Time
                 division multiplexing, Broadband frequency shifting






             2018-06-10 收稿; 2018-10-15 定稿
             作者简介: 陈华志 (1984- ), 男, 重庆人, 硕士, 研究方向: 声光器件设计。
              通讯作者 E-mail: cetc26chz@126.com
             †
   15   16   17   18   19   20   21   22   23   24   25