| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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A New Ge/F−Co-doped SMF with Enhanced SBS Threshold Fabricated by PCVD |
| LIU Tian1, TONG Wei-Jun2, ZHANG Fang-Hai2, ZHANG Xin-Ben1, DAI Neng-Li1**, LI Jin-Yan1
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1Wuhan National Laboratory of Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074
2State Key Laboratory, Yangtze Optical Fiber and Cable Company Ltd., Wuhan 430074
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| Cite this article: |
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LIU Tian, TONG Wei-Jun, ZHANG Fang-Hai et al 2011 Chin. Phys. Lett. 28 104211 |
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Abstract A new single-mode fibre (SMF) with high stimulated Brillouin scattering (SBS) threshold which is co-doped with GeO2 and F2 in the core is reported. To increase the SBS threshold, the acousto−optic effective area is increased by designing a transverse acoustic waveguide and adjusting the doping level of GeO2 and F2 while the designed fiber retains a step optical refractive index profile. The optimal design is found by numerical simulation and the optimal fiber is fabricated by a plasma−activated chemical vapor deposition (PCVD) process. It yields the threshold 6.79 dB, which is higher than the conventional single-mode fiber G.652 and 3dB higher than the Corning® SMF−28e+™ optical fiber with NexCor® technology.
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| Keywords:
42.81.Qb
42.65.Es
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Received: 01 June 2011
Published: 28 September 2011
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| PACS: |
42.81.Qb
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(Fiber waveguides, couplers, and arrays)
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42.65.Es
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(Stimulated Brillouin and Rayleigh scattering)
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