发明名称 |
L BAND AMPLIFIER WITH DISTRIBUTED FILTERING |
摘要 |
An L-band optical amplifier has a rare earth doped gain medium including a filter distributed over a finite physical portion of the gain medium. The filter is distributed over between about 25% to substantially the entire length of the gain medium. The distributed filter substantially eliminates out-of-band light emission (C-band ASE, 1520 nm-1565 nm) and thus improves the performance of L-band amplification (1565 nm-1620 nm). Examples of distributed filters include discrete type filters such as long period gratings, or continuous type filters such as rare earth doped, twin core fibers, non-adiabatically tapered fibers and coaxial resonant ring fibers.
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申请公布号 |
US2002105720(A1) |
申请公布日期 |
2002.08.08 |
申请号 |
US19990370735 |
申请日期 |
1999.08.09 |
申请人 |
MINELLY JOHN D.;YADLOWSKY MICHAEL J. |
发明人 |
MINELLY JOHN D.;YADLOWSKY MICHAEL J. |
分类号 |
H01S3/06;H01S3/067;H01S3/10;H01S3/16;H04B10/17;(IPC1-7):H01S3/00 |
主分类号 |
H01S3/06 |
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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