发明名称 |
Article comprising hybrid optical fiber amplifier |
摘要 |
Multistage Er-doped fiber amplifiers (EDFAs) are disclosed. They comprise a first stage that comprises Er and Al, and further comprise a second stage that comprises Er and a further rare earth element, exemplary Yb. Such multistage EDFAs can have advantageous characteristics e.g., a relatively wide flat gain region (e.g. 1544-1562 nm), and relatively high output power, without significant degradation of the noise figure. Exemplary, the amplifiers are used in WDM systems and in analog CATV systems.
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申请公布号 |
US5731892(A) |
申请公布日期 |
1998.03.24 |
申请号 |
US19970847766 |
申请日期 |
1997.04.22 |
申请人 |
LUCENT TECHNOLOGIES INC. |
发明人 |
DIGIOVANNI, DAVID JOHN;PARK, NAMKYOO;WOMACK, KIM WILLARD;WYSOCKI, PAUL FRANCIS |
分类号 |
H01S3/07;H01S3/06;H01S3/067;H01S3/10;H01S3/16;H01S3/23;(IPC1-7):H01S3/13;G02B6/00 |
主分类号 |
H01S3/07 |
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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