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Micromachines 2019, 10(1), 37; https://doi.org/10.3390/mi10010037

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

1
College of Science, MINZU University of China, Beijing 100081, China
2
School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China
*
Authors to whom correspondence should be addressed.
Received: 27 November 2018 / Revised: 18 December 2018 / Accepted: 4 January 2019 / Published: 8 January 2019
(This article belongs to the Special Issue Optical MEMS)
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Abstract

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. View Full-Text
Keywords: tunable fiber laser; echelle grating; DMD chip tunable fiber laser; echelle grating; DMD chip
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Li, J.; Chen, X.; Dai, D.; Gao, Y.; Lv, M.; Chen, G. Tunable Fiber Laser with High Tuning Resolution in C-band Based on Echelle Grating and DMD Chip. Micromachines 2019, 10, 37.

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