Tunable comb-filter using thermally expanded core fiber and ytterbium doped fiber and its application to multi-wavelength fiber laser
Tunable comb-filter using thermally expanded core fiber and ytterbium doped fiber and its application to multi-wavelength fiber laser
复制标题
DOI：
10.1016/j.optcom.2008.08.033
复制
发表时间：
2008-12
影响因子：
2.4
通讯作者：
L. Nguyen;Dusun Hwang;D. Moon;Y. Chung
中科院分区：
文献类型：
--
作者：
L. Nguyen;Dusun Hwang;D. Moon;Y. Chung
通过将一根商用掺镱光纤（YDF）在2根热扩芯（TEC）光纤的扩芯端拼接，构建了一种新型的可调谐梳状滤波器。这种结构由于YDF的芯模和包层模之间的干涉而形成全光纤马赫-曾德尔干涉仪。当用980 nm半导体激光器泵浦YDF时，干涉条纹向长波方向移动。然后，我们展示了这种新提出的可调谐梳状滤波器的SOA为基础的环形激光器的应用，并获得了多波长激射。在所提出的梳状滤波器中，也可以通过泵浦YDF来调谐激射波长。
We constructed a novel tunable comb-filter by splicing a commercial Yb3+doped fiber (YDF) between 2 thermally expanded core (TEC) fibers at their core-expanded ends. This structure forms an all-fiber Mach–Zehnder interferometer due to the interference between the core mode and the cladding modes of the YDF. The interference fringes shifts to the longer wavelength region as the YDF is pumped by a 980nm laser diode (LD). We then demonstrated application of this newly proposed tunable comb-filter to a SOA-based ring laser and obtained multi-wavelength lasing. The lasing wavelengths can be also tuned by pumping the YDF in the proposed comb-filter.