40-nm-wide tunable fiber ring laser with single-mode operation using a highly stretchable FBG
40-nm-wide tunable fiber ring laser with single-mode operation using a highly stretchable FBG
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DOI：
10.1109/68.959352
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发表时间：
2001-11
影响因子：
2.6
通讯作者：
Y. Song;S. Havstad;D. Starodubov;Y. Xie;A. Willner;J. Feinberg
中科院分区：
文献类型：
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作者：
Y. Song;S. Havstad;D. Starodubov;Y. Xie;A. Willner;J. Feinberg
我们展示了一个750赫兹线宽单模掺铒光纤（EDF）环形激光器，具有宽可调谐光纤布拉格光栅（FBG）。利用光纤光栅作为窄波长选择元件，在腔内使用4 m的非抽运EDF作为可饱和吸收体，实现了稳定的单模工作。40nm的连续调谐范围为1522-1562 nm，使用高度可拉伸的FBG实现，其滤波器调谐范围超过52 nm。采用化学剥离的氘负载光纤制备光栅，消除了光栅强度的退化因素，实现了光栅的宽可调性。与以前使用的fbg相比，调谐范围增加了3.5倍。
We demonstrate a 750-Hz linewidth single-mode erbium-doped fiber (EDF) ring laser with wide tunability using a widely tunable fiber Bragg grating (FBG). The stable single-mode operation is realized by using the FBG as a narrow wavelength-selective element and 4 m of unpumped EDF as a saturable absorber in the cavity. The 40-nm continuous tuning range of 1522-1562 nm is achieved using a highly stretchable FBG that exhibits a filter tuning range of over 52 nm. The grating is prepared with chemically stripped deuterium-loaded fiber to eliminate degrading factors for the grating strength, thereby achieving the wide tunability. The tuning range represents a 3.5-fold increase in wavelength tuning over previous use of FBGs.