Apodized distributed feedback fiber laser with asymmetrical outputs for multiplexed sensing applications | Zendy

Haifeng Qi | Zendy; Zhiqiang Song | Zendy; Shujuan Li | Zendy; Jian Guo | Zendy; Chang Wang | Zendy; GangDing Peng | Zendy

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Apodized distributed feedback fiber laser with asymmetrical outputs for multiplexed sensing applications

Author(s) -

Haifeng Qi,

Zhiqiang Song,

Shujuan Li,

Jian Guo,

Chang Wang,

GangDing Peng

Publication year - 2013

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.21.011309

Subject(s) - apodization , optics , fiber bragg grating , laser linewidth , multiplexing , materials science , fiber laser , relative intensity noise , distributed feedback laser , longitudinal mode , laser , semiconductor laser theory , physics , computer science , telecommunications

The spectral characteristics of four different types of apodized fiber Bragg gratings with a single π phase shift are analyzed based on the simulation. The 2-discrete Gaussian apodization is proved to have the most effective suppression to grating side mode. A novel asymmetrical distributed feedback fiber laser based on this apodization structure is presented and fabricated as well. The grating has a -20 dB side-mode suppression. The laser exhibits a high power ratio of backward to forward outputs. It has a relative intensity noise of -90 dB/Hz and a linewidth of 20k Hz operating in a single polarization longitudinal mode.

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