4.5 Article

Narrow spectral linewidth and tunable erbium-doped fiber ring laser using a MZI based on CHCF

期刊

OPTICAL FIBER TECHNOLOGY
卷 67, 期 -, 页码 -

出版社

ELSEVIER SCIENCE INC
DOI: 10.1016/j.yofte.2021.102739

关键词

Capillary hollow-core fiber; Tunable erbium-doped fiber ring laser; Mach-Zehnder interferometer

资金

  1. Mexican National Council of Science and Technology (CONACyT) [CB2017-2018-A1-S-1806, CB2016-286368, CB2016-286629]
  2. Universidad de Guanajuato [CIIC-084/2021]
  3. CONACyT [CB2016-286629]
  4. CONACyT

向作者/读者索取更多资源

This paper proposes and demonstrates a narrow spectral linewidth and wavelength-tunable erbium-doped fiber laser based on a MachZehnder interferometer filter. By incorporating the filter inside a ring cavity laser, a high-performance single laser emission is achieved, with the ability to tune the wavelength emission by changing the temperature of the filter. This technology has significant implications for telecom applications.
In this paper, a narrow spectral linewidth and wavelength-tunable erbium-doped fiber laser based on a MachZehnder interferometer (MZI) as a filter is proposed and experimentally demonstrated. The filter is fabricated by splicing a short length of capillary hollow-core fiber (CHCF) between two small sections of multimode fibers (MMF). The interference pattern generated by the filter has a free spectral range of 10.5 nm and a maximum extinction ratio of 36 dB at 1560 nm. Then, by incorporating the filter inside a ring cavity laser, a single laser emission centered at 1566.46 nm with a spectral width around 0.03 nm and a high SNR of 66 dB (also has a SMSR of 53 dB) is obtained. By changing the temperature of the filter, the wavelength emission of the laser can be tuned from 1566.46 to 1570.09 nm. Considering that the fabrication process of the filter is relatively simple and can be easily implemented in an EDFL, we strongly believe that it can have a great deal of interest in telecom applications.

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