发明名称 |
SYSTEM FOR AMPLIFYING OPTICAL SIGNAL, TRANSMISSION SYSTEM WITH DISPERSION MAP, AND ERBIUM DOPED FIBER AMPLIFIER (EDFA) |
摘要 |
PROBLEM TO BE SOLVED: To provide a hybrid Raman EDFA which can obtain a substantially flat gain in a wide band. SOLUTION: The hybrid Raman EDFA provides gain equalization over the C-band and L-band. The EDFA has a Raman section producing a Raman gain, and an EDFA section producing an EDFA gain complimenting the Raman gain. The EDFA section includes a highly inverted, single-stage EDFA to produce a complimenting EDFA gain shape. The EDFA section includes a high return loss termination located after an erbium fiber to receive an unabsorbed pump power. A plurality of hybrid Raman-EDFAs are connected in an amplifier chain in a transmission system. The transmission system provides a dispersion map including regular composite fiber spans followed by at least one compensating span of negative dispersion fibers. The Raman sections of the hybrid Raman-EDFAs are coupled to a negative dispersion fiber in the transmission system. COPYRIGHT: (C)2008,JPO&INPIT |
申请公布号 |
JP2008066739(A) |
申请公布日期 |
2008.03.21 |
申请号 |
JP20070260293 |
申请日期 |
2007.10.03 |
申请人 |
TYCO TELECOMMUNICATIONS (US) INC |
发明人 |
FOURSA DMITRI;NISSOV MORTEN;PILIPETSKII ALEXEI N;MILLS MICHAEL A;LIN CHINLON;PEDERSEN BO |
分类号 |
G02F1/35;H01S3/23;H01S3/06;H01S3/067;H01S3/094;H01S3/10;H01S3/16;H01S3/30;H04B10/02;H04B10/16;H04B10/17;H04B10/18 |
主分类号 |
G02F1/35 |
代理机构 |
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代理人 |
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地址 |
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