发明名称 |
Raman fiber optic amplifier with reduced dispersion |
摘要 |
A pumped Raman fiber optic amplifier includes two optical fibers whose lengths are determined so that the fibers exhibit dispersions of substantially equal magnitude and opposite sign at the wavelength of an input light signal. The fiber having the positive dispersion has a cylindrical core, an outer cladding, and a refractive index profile with respect to the outer cladding. The core has a diameter of between 3 and 6 microns (mum) and a difference (Deltan) between the index of the core and the cladding is between 0.015 and 0.035. The index profile includes a trench region adjacent the circumference of the core, and the trench region has a width of between 1 and 4 mum and a Deltan of between -0.005 and -0.015. The two fibers are slope matched so that the net dispersion of the amplifier remains substantially zero over a broad wavelength interval.
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申请公布号 |
US6816657(B2) |
申请公布日期 |
2004.11.09 |
申请号 |
US20020140696 |
申请日期 |
2002.05.08 |
申请人 |
FURUKAWA ELECTRIC NORTH AMERICA, INC. |
发明人 |
GAARDE PETER;GRUNER-NIELSEN LARS;PALSDOTTIR BERA |
分类号 |
G02B6/036;G02F1/35;H01S3/06;H01S3/067;H01S3/30;H04B10/17;H04B10/18;(IPC1-7):G02B6/16;G02B6/02 |
主分类号 |
G02B6/036 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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