基于M-Z滤波的波长可调谐掺铒光纤随机激光器  

Wavelength Tunable Erbium-Doped Random Fiber Laser Based on M-Z Filter

作　　者：张文铎 何巍[1,2] 李智翰 郭国文 杨松岩 ZHANG Wenduo;HE Wei;LI Zhihan;GUO Guowen;YANG Songyan(Key Lab Minist Educ Optoelect Measurement Technol,Beijing Informat Sci&Technol Univ,Beijing 100016,CHN;Beijing Lab Opt Fiber Sensing&Syst,Beijing Informat Sci&Technol Univ,Beijing 100016,CHN)

机构地区：[1]北京信息科技大学光电测试技术及仪器教育部重点实验室,北京100016 [2]北京信息科技大学光纤传感与系统北京实验室,北京100016

出　　处：《半导体光电》2023年第3期371-375,共5页Semiconductor Optoelectronics

基　　金：国家自然科学基金项目(52105540);高等学校学科创新引智计划项目(D17021);北京市自然基金-市教委联合基金项目(KZ201911232044)。

摘　　要：提出了一种基于M-Z结构的可调谐掺铒光纤随机激光器,并对随机激光输出过程、随机激光的波长可调谐输出以及随机激光的稳定性进行了实验研究。通过采用光纤熔接手段将两个2×2光纤耦合器进行熔接,构成全光纤M-Z滤波结构。实验结果表明,激光器的阈值功率为120 mW,调整可调谐衰减器改变增益损耗,实现波长可调谐输出,其中单波长输出分别为1 554.4,1 555.2和1 556.3 nm,信噪比达到31.65 dB;双波长输出分别为1 525.9,1 556.2和1 531.6,1 556.2 nm,信噪比优于21.92 dB;三波长输出分别为1 527.4,1 546.9,1 551.6和1 526.9,1 530.0,1 549.8 nm,信噪比优于20.10 dB;四波长输出为1 525.9,1 530.1,1 547.9和1 552.3 nm,信噪比优于18.95 dB;其中单波长和双波长的功率波动分别优于1.65和1.99 dB;激光器斜率效率为0.627%。In this paper,a tunable erbium-doped fiber random laser based on M-Z structure is proposed.The output process,the wavelength tunable output and the stability of random laser were experimentally studied.Two 2×2 optical fiber couplers were fused by optical fiber fusion to form an all-fiber M-Z filter structure.The experimental results show that the threshold power of the laser is 120 mW.The gain loss is changed by adjusting the tunable attenuator,and the wavelength tunable output is realized.The single-wavelength output is 1 554.4,1555.2 and 1556.3 nm respectively,and the signal-to-noise ratio is 31.65 dB.The dual-wavelength output is 1 525.9,1 556.2 and 1 531.6,1 556.2 nm respectively,and the signal-to-noise ratio is better than 21.92 dB.The output of three wavelengths are 1 527.4,1 546.9,1 551.6 and 1 526.9,1 530.0 and 1 549.8 nm respectively,and the signal-to-noise ratio is better than 20.10 dB.The four-wavelength output is 1 525.9,1 530.1,1 547.9 and 1 552.3 nm,and the signal-to-noise ratio is better than 18.95 dB.The stability of single wavelength and dual wavelength is better than 1.65 and 1.99 dB respectively.The slope efficiency of the laser is 0.627%.Therefore,the random laser can achieve single-wavelength,dual-wavelength,three-wavelength tunable output and four-wavelength stable output.

关 键 词：光纤随机激光 掺铒光纤 M-Z 波长可调谐 

分 类 号：TN253[电子电信—物理电子学]