基于并行SMS结构的可开关可调谐掺铒光纤激光器  

A switchable and tunable erbium-doped fiber laser based on parallel SMS structure

作　　者：张卫华[1] 刘梦颖[2] 童峥嵘[2] 曹晔[2] 

机构地区：[1]天津理工大学电子信息工程学院薄膜电子与通信器件重点实验室,天津300384 [2]天津理工大学计算机与通信工程学院薄膜电子与通信器件重点实验室,天津300384

出　　处：《光电子．激光》2016年第1期12-15,共4页Journal of Optoelectronics·Laser

基　　金：天津市青年基金(13JCQNJC01800);天津理工大学项目(YB11-06;YB11-34)资助项目

摘　　要：提出了一种基于并行单膜光纤(SMF)-多膜光纤(MMF)-SMS(SMS)结构的可调谐掺铒光纤(EDF)激光器,其总体结构是在环形激光腔中采用了两个并行的SMS结构作为滤波器件。通过控制腔内的损耗,具有单、双波长可开关特性。单、双波长状态下的边模抑制比(SMSR)均大于35dB。波长调谐采用弯曲调谐的方式,单波长状态下,当螺旋测微计控制的位移量从0μm变化到60μm时,输出激光中心波长从1 558.3nm变化到1 557.3nm。实验结果表明,此结构的光纤激光器不仅具有结构简单、成本低的优点,还具有波长可开关和可调谐特性,在波分复用(WDM)光通信系统、光纤传感和高精度光谱测量等众多领域有着很好的应用前景。A tunable erbium-doped fiber（EDF）laser based on parallel single mode fiber（SMF）-multimode fiber（MMF）-SMF（SMS）structure is proposed.Two parallel SMS structures are used as filters in the ring cavity of the laser.By controlling the loss of the cavity,the laser is switchable between the single wavelength mode and the dual-wavelength mode.The side mode suppression ratios（SMSRs）are more than 35 dB in two modes.The wavelength of the laser is tuned by the bending.When the laser operates on the single wavelength mode,the center wavelength of the laser shifts from 1 558.3nm to1 557.3nm with the displacement increasing from 0μm to 60μm controlled by the micrometer.The experiment shows that proposed laser not only has the advantages of simple structure and low cost,but also has the switchable and tunable characteristics,which means that the laser is promising in wavelength division multiplex（WDM）optical communication systems,optical fiber sensing,high accuracy spectral measurement and many other fields.

关 键 词：并行单模光纤-多模光纤-单模光纤(SMS)结构 掺铒光纤(EDF)激光器 可调谐 可开关 弯曲 

分 类 号：TN253[电子电信—物理电子学]