Browsing by Author "Chen, Mei-Jun"

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Erbium-doped fiber dual-ring laser with stable single-longitudinal-mode and 55-nm tuning range
(2018-10-01)
Yeh, Chien-Hung
;
Yang, Zi-Qing
;
Huang, Tzu-Jung
;
Chow, Chi-Wai
;
Chang, Yao-Jen
In the investigation, we propose and demonstrate a stabilized and wavelength-selectable erbium-doped fiber (EDF) compound-ring laser with single-longitudinal-mode (SLM) oscillation covering both C-band and L-band ranges. Here, the dual-ring-cavity (DRC) scheme with an unpumped EDF-based saturable absorber (SA) is proposed in the EDF laser to guarantee SLM output. The proposed DRC of EDF laser can produce the mode-filter and ultra-narrowband auto-tracking filter effects to suppress the densely multi-longitudinal-mode (MLM) and extend the effective gain of EDF in a wavelength range of 1525.0-1580.0 nm. In addition, the observed output stabilities of power and wavelength in the proposed EDF DRC laser are also experimented and discussed. (C) 2018 Elsevier Ltd. All rights reserved.