標題: A feedback-injected Fabry-Perot laser diode filtering technique for side-mode suppression and linewidth reduction of erbium-doped fiber lasers
作者: Lin, GR
Lee, SK
光電工程學系
Department of Photonics
關鍵字: erbium-doped fiber laser;Fabry-Perot laser diode;feedback-injection;mutual injection-locking;band-pass filter;narrow linewidth;side-mode suppression ratio
公開日期: 15-Jul-2003
摘要: By adding a fiber-pigtailed Fabry-Perot laser diode (FPLD) into a close-loop erbium-doped fiber amplifier (EDFA) ring cavity. and feedback-injecting the FPLD biased at just below threshold and the EDFA each other via directional couplers, we demonstrate a low-cost band-pass filtering technique for constructing narrow linewidth erbium-doped fiber laser (EDFL) with ultrahigh side-mode suppression ratio (SMSR). Under an output coupling ratio of 90%, the mutually injection-locked EDFL-FPLD link exhibits a maximum output power and SMSR of up to 98.6 mW and 49.6 dB at wavelength 1561.37 nm,. respectively. Wavelength tuning of up to 6 nm can be achieved by tuning the temperature and fine adjusting the below threshold driven current of FPLD. The minimum spectral linewidth at 3dB-decay of as small as 0.017 nm measuring by commercial optical spectrum analyzer with limited resolution bandwidth of 0.01 nm are observed. The stabilities in power, SMSR, peak wavelength of +/-0.01 mW, +/-0.5 dB, and +/-0.025 nm, respectively, are also determined. (C) 2003 Elsevier Science B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/S0030-4018(03)01629-8
http://hdl.handle.net/11536/27716
ISSN: 0030-4018
DOI: 10.1016/S0030-4018(03)01629-8
期刊: OPTICS COMMUNICATIONS
Volume: 223
Issue: 1-3
起始頁: 67
結束頁: 74
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