利用单边带调制器实现对多波长光纤激光器的高精度射频控制调谐技术  

Precisely Tuning Technology of Multi-Wavelength Fiber Laser by Radio Frequency Signal Based on Single Side Band Modulator

作　　者：侯云哲[1] 王肇颖(指导)[1] 秦旭伟[1] 刘士圆 罗莎[1] 贾东方[1] 葛春风[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院,光电信息技术教育部重点实验室,天津300072

出　　处：《中国激光》2014年第8期122-127,共6页Chinese Journal of Lasers

基　　金：国家自然科学基金(61275084;61377078);天津市自然科学基金面上项目(12JCYBJC10800)

摘　　要：提出了一种利用射频控制信号对多波长光纤激光器输出的多波长信号进行整体精密调谐的方法。通过在多波长光纤激光器腔外放置射频信号控制的单边带(SSB)调制器,实现了65个波长整体精密调谐。通过改变射频驱动信号频率,可以实现多波长整体在150MHz^12GHz范围内的任意调谐,最低对应1.2pm的调谐量。且调谐步长由射频控制信号决定,可精确到1Hz。多波长整体调谐前后,多波长间隔始终保持50GHz不变,各波长的边模抑制比(SMSR)均可达到20dB。A method of using radio frequency （RF） control signal to achieve multi-wavelength fiber laser output precisely tuned is proposed. 65 wavelengths simultaneously tuned precisely is achieved by placing a RF controlling single side band （SSB） modulator outside the cavity of multi-wavelength fiber laser. The multi-wavelength output can be tuned simultaneously with a tuning step ranging from 150 MHz to 14 GHz when changing the frequency of RF signal, corresponding to 1.2 pm as a minimum tuning step. The tuning resolution is determined by the resolution of the RF wave generator, which can be as low as 1 Hz. The wavelength spacing remains 50 GHz before and after the multi-wavelength tuning. The sideband-mode suppression ratio （SMSR） of each wavelength output can reach 20 dB.

关 键 词：光纤光学 高精度调谐 多波长光纤激光器 单边带调制器 射频 

分 类 号：TN253[电子电信—物理电子学]