材料科学
光学
多模光纤
带通滤波器
色散位移光纤
光纤激光器
滤波器(信号处理)
渐变折射率纤维
波长
光纤布拉格光栅
光电子学
光纤
光纤传感器
物理
计算机科学
计算机视觉
作者
José Enrique Antonio-Lopez,Arturo Castillo-Guzmán,Daniel A. May-Arrioja,R. Selvas-Aguilar,Patrick LiKamWa
出处
期刊:Optics Letters
[The Optical Society]
日期:2010-01-25
卷期号:35 (3): 324-324
被引量:167
摘要
We report on a wavelength-tunable filter based on multimode interference (MMI) effects. A typical MMI filter consists of a multimode fiber (MMF) spliced between two single-mode fibers (SMF). The peak wavelength response of the filter exhibits a linear dependence when the length of the MMF is modified. Therefore a capillary tube filled with refractive-index-matching liquid is used to effectively increase the length of the MMF, and thus wavelength tuning is achieved. Using this filter a ring-based tunable erbium-doped fiber laser is demonstrated with a tunability of 30 nm, covering the full C-band.
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