Tunable Q-switched erbium doped fiber laser based on metal transition oxide saturable absorber and refractive index characteristic of multimode interference effects

被引：35

作者：

Mohammed, D. Z. ^{[1
]}

Khaleel, Wurood Abdulkhaleq ^{[2
]}

Al-Janabi, A. H. ^{[1
]}

机构：

[1] Univ Baghdad, Inst Laser Postgrad Studies, Baghdad, Iraq

[2] Al Nahrain Univ, Coll Engn, Laser & Optoelect Dept, Baghdad, Iraq

来源：

OPTICS AND LASER TECHNOLOGY | 2017年 / 97卷

关键词：

Q-switching; MMI tunable filter; Metal transition oxide; Ferro-oxide; Saturable absorber;

D O I：

10.1016/j.optlastec.2017.06.022

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Ferro-oxide (Fe3O4) nanoparticles were used as a saturable absorber (SA) for a passively Q-switched erbium doped fiber laser (EDFL) with ring cavity. The Q-switching operation was achieved at a pump threshold of 80 mW. The proposed fiber laser produces stable pulses train of repetition rate ranging from 25 kHz to 80 kHz as the pump power increases from threshold to 342 mW. The minimum recorded pulse width was 2.7 mu s at 342 mW. The C-band tunability operation was performed using single mode-multimode-single mode fiber (SM-MM-SM) structure. The laser exhibited a total tuning range of 7 nm, maximum sensitivity of 106.9 nm, optical signal to noise ratio (OSNR) of 38 dB and 3-dB linewidth of 0:06 nm. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：106 / 110

页数：5

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