Taper Fused Fiber Bundle 1\times 4 Coupler for High Power Splitting

The first experimental demonstration of a 1 × 4 all-fiber power splitter capable of high-power operation is presented. The splitter, prepared by fused taper technique and fusion splicing technique, consists of one input fiber with a core diameter of 400 μm (NA CORE = 0.22) and four output fibers wit...

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Bibliographic Details
Published in:IEEE photonics technology letters 2015-12, Vol.27 (24), p.2527-2530
Main Authors: Chen, Han, Zou, Shuzhen, Yu, Haijuan, Lin, Xuechun
Format: Article
Language:English
Subjects:
all-fiber
Beams (radiation)
Couplers
Couplings
Fibers
High power
Lasers
Noise levels
Optical fiber couplers
Optical fiber devices
Optical fiber theory
power splitter
Propagation losses
Simulation
Splicing
taper fused bundle
Three dimensional
Variability
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Summary:The first experimental demonstration of a 1 × 4 all-fiber power splitter capable of high-power operation is presented. The splitter, prepared by fused taper technique and fusion splicing technique, consists of one input fiber with a core diameter of 400 μm (NA CORE = 0.22) and four output fibers with a core diameter of 200 μm (NA CORE = 0.22). The device was tested at a laser power up to 166 W and it achieves a low excess loss of 0.56 dB and an excellent uniformity of less than 0.3 dB in port-to-port power splitting ratio. The results of theoretical simulation by the 3-D beam propagation method show that the performance of this splitter could be optimized further through modifying structure parameters.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2015.2473716