Widely tunable/wavelength-swept SLM fiber laser with ultra-narrow linewidth and ultra-high OSNR

Ting Feng , Dong-liang Ding , Peng Liu , Hong-xin Su , X. Steve Yao

Optoelectronics Letters ›› : 433 -436.

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Optoelectronics Letters ›› : 433 -436. DOI: 10.1007/s11801-016-6194-z
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Widely tunable/wavelength-swept SLM fiber laser with ultra-narrow linewidth and ultra-high OSNR

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Abstract

We propose and demonstrate a novel single-longitudinal-mode (SLM) erbium-doped fiber laser (EDFL) capable of operating at fixed-wavelength lasing mode with a tunable range more than 54 nm, an ultra-narrow linewidth of 473 Hz and an ultra-high optical signal-to-noise ratio (OSNR) more than 72 dB, or operating at wavelength-swept mode with tunable sweep rate of 10—200 Hz and a sweep range more than 50 nm. The excellent features mainly benefit from a triple-ring subring cavity constructed by three optical couplers nested one another and a fiber Fabry-Pérot tunable filter which can be driven by a constant voltage or a periodic sweep voltage for fixed or wavelength- swept operation, respectively. The proposed EDFL has potential applications in high-resolution spectroscopy and fiber optic sensing.

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Ting Feng, Dong-liang Ding, Peng Liu, Hong-xin Su, X. Steve Yao. Widely tunable/wavelength-swept SLM fiber laser with ultra-narrow linewidth and ultra-high OSNR. Optoelectronics Letters 433-436 DOI:10.1007/s11801-016-6194-z

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