Chinese Optics Letters, Volume. 7, Issue 8, 08671(2009)
Design of large-mode-area rare earth doped fiber for high power coiled fiber amplifier
The numerical study on the performance of large-mode-area (LMA) fibers coiled onto a spool in high power amplifier is carried out as the bend-induced distortion of fiber modes severely affects the output characteristics of amplifier systems. The variations for high-order mode bend distortion with different orientations relative to the plane of the fiber bend are observed and shown. Concerning the practical applications, a bend-resistant LMA fiber with the mode area larger than 1000 \mum2 and excellent high-order mode suppression is designed completely by optimizing the refractive index (RI) and dopant profile. The results indicate that a hybrid profile of RI and dopant is the best choice for LMA fiber with coiling.
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Shuang Chen, Ying Feng, Ling Wang. Design of large-mode-area rare earth doped fiber for high power coiled fiber amplifier[J]. Chinese Optics Letters, 2009, 7(8): 08671
Received: Dec. 1, 2008
Accepted: --
Published Online: Aug. 17, 2009
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