Widely tunable mode-locked fiber laser using carbon nanotube and LPG W-shaped filter

被引：47

作者：

Wang, Jie ^{[1
,2
]}

Zhang, A. Ping ^{[1
]}

Shen, Yong Hang ^{[2
]}

Tam, Hwa-yaw ^{[1
]}

Wai, P. K. A. ^{[3
]}

机构：

[1] Hong Kong Polytech Univ, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China

[2] Zhejiang Univ, Dept Opt Engn, Hangzhou 310027, Zhejiang, Peoples R China

[3] Hong Kong Polytech Univ, Elect & Informat Engn Dept, Kowloon, Hong Kong, Peoples R China

来源：

OPTICS LETTERS | 2015年 / 40卷 / 18期

关键词：

DISSIPATIVE SOLITON GENERATION; SWITCHABLE DUAL-WAVELENGTH; SATURABLE ABSORBER; GRAPHENE OXIDE; GRATINGS; LOCKING;

D O I：

10.1364/OL.40.004329

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A widely tunable mode-locked fiber laser using a carbon nanotube absorber and a fiber-optic W-shaped spectral filter is presented. The W-shaped filter is constructed by sandwiching a phase-shifted long-period grating between two LPGs of different periods. By adjusting the temperature of the W-shaped filter from 23 degrees C to 100 degrees C, the central wavelength of the mode-locked fiber laser can be continuously tuned from 1597 to 1553 nm. The tuning range is further extended to 1531.6 nm when a shorter erbium-doped fiber is used in the fiber oscillator. The experimental results reveal that the large thermal tunability of the proposed LPG filter provides an effective approach to achieve compact widely tunable mode-locked fiber lasers covering both C and L bands. (C) 2015 Optical Society of America

引用

页码：4329 / 4332

页数：4

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