Tunable fiber laser based on a cascaded structure consisting of in-line MZI and traditional MZI

A tunable erbium-doped fiber（EDF） laser with a cascaded structure consisting of in-line Mach-Zehnder interferometer（MZI） and traditional MZI is proposed. The transmission spectrum of the in-line MZI is modulated by the traditional MZI, which determines the period of the cascaded structure, while the...

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Bibliographic Details
Published in:Optoelectronics letters 2016-11, Vol.12 (6), p.437-440
Main Author: 童峥嵘 杨贺 张卫华
Format: Article
Language:English
Subjects:
Envelope curves
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Tunable lasers
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Summary:A tunable erbium-doped fiber（EDF） laser with a cascaded structure consisting of in-line Mach-Zehnder interferometer（MZI） and traditional MZI is proposed. The transmission spectrum of the in-line MZI is modulated by the traditional MZI, which determines the period of the cascaded structure, while the in-line MZI＇s transmission spectrum is the outer envelope curve of the cascaded structure＇s transmission spectrum. A stable single-wavelength lasing operation is obtained at 1 527.14 nm. The linewidth is less than 0.07 nm with a side-mode suppression ratio（SMSR） over 48 d B. Fixing the in-line MZI structure on a furnace, when the temperature changes from 30 ℃ to 230 ℃, the central wavelength can be tuned within the range of 12.4 nm.
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-016-6183-2