Wavelength-switchable fiber laser based on few-mode fiber filter with core-offset structure. (July 2016)

• Record Type: Journal Article
• Authors: Qi, Yanhui; Kang, Zexin; Sun, Jiang; Ma, Lin; Jin, Wenxing; Lian, Yudong; Jian, Shuisheng
• Is Part Of: Optics & laser technology. Volume 81(2016)
• Page Start: 26
• Page End: 32
• Publication Date: 2016-07
• Subjects: Wavelength-switchable -- Few-mode fiber -- Core-offset structure -- Mode interference; Optics -- Periodicals; Lasers -- Periodicals; Electronic journals; 621.366
• DOI: 10.1016/j.optlastec.2016.01.022
• Languages: English
• ISSNs: 0030-3992

Abstract

Abstract: We propose a wavelength-switchable erbium-doped fiber ring laser based on the few-mode fiber filter with core-offset structure. The filter is constructed by splicing a section of few-mode fiber with two segments of single mode fiber. Meanwhile, the excited modes are effectively selected by controlling the core-offset splicing carefully. The novel filter is based on the interference between fundamental mode and LP 11 mode. The single-, dual-, triple- and quad-wavelength fiber laser is accomplished by adjusting the states of polarization controller at room temperature. The principle of operation is mainly based on the saturated spectral hole-burning effect and the balance between the gain and loss in the cavity. Highlights: Proposed a novel filter with core-offset structure based on few-mode fiber. The excited modes are effectively selected by controlling the core-offset splicing. A comb filter is achieved in the experiment. The single-, dual-, trial- and quad-wavelength switchable fiber laser is accomplished.