Tunable Fiber Laser with High Tuning Resolution in C-band Based on Echelle Grating and DMD Chip

The tunable fiber laser with high tuning resolution in the C-band is proposed and demonstrated based on a digital micromirror device (DMD) chip and an echelle grating. The laser employs a DMD as a programmable wavelength filter and an echelle grating with high-resolution features to design a cross-d...

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Bibliographic Details
Published in:Micromachines (Basel) 2019-01, Vol.10 (1), p.37
Main Authors: Li, Jinliang, Chen, Xiao, Dai, Dezheng, Gao, Yunshu, Lv, Min, Chen, Genxiang
Format: Article
Language:English
Subjects:
Accuracy
C band
DMD chip
echelle grating
Echelle gratings
Efficiency
Fiber lasers
Lasers
Optics
Room temperature
Spectrum analysis
tunable fiber laser
Tunable lasers
Tuning
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Summary:The tunable fiber laser with high tuning resolution in the C-band is proposed and demonstrated based on a digital micromirror device (DMD) chip and an echelle grating. The laser employs a DMD as a programmable wavelength filter and an echelle grating with high-resolution features to design a cross-dispersion optical path to achieve high-precision tuning. Experimental results show that wavelength channels with 3 dB-linewidth less than 0.02 nm can be tuned flexibly in the C-band and the wavelength tuning resolution is as small as 0.036 nm. The output power fluctuation is better than 0.07 dB, and the wavelength shift is below 0.013 nm in 1 h at room temperature.
ISSN:2072-666X
2072-666X
DOI:10.3390/mi10010037