发明名称 |
Rare-earth-doped waveguide |
摘要 |
The present invention is to a method of adapting optical rare-earth-doped waveguide (10) having a plurality of transverse propagation modes, such that in use, signal gains of non-fundamental modes of the waveguide are attenuated relative to a signal gain of a fundamental mode of the waveguide. The waveguide (10) has a light-guiding region (45) defined by a refractive index-modifying dopant, such as Ge, which has a thermal diffusion coefficient at temperature T in the waveguide greater than a thermal diffusion coefficient of the rare-earth dopant at temperature T. The method comprises heating the waveguide (10) at the temperature T such that a concentration profile of the refractive index-modifying dopant becomes broader than a concentration profile of the rare-earth dopant.
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申请公布号 |
US2004052495(A1) |
申请公布日期 |
2004.03.18 |
申请号 |
US20030432068 |
申请日期 |
2003.07.12 |
申请人 |
ENGLUND MARK ANDREW;LOEVSETH SIGURD WEIDEMANN |
发明人 |
ENGLUND MARK ANDREW;LOEVSETH SIGURD WEIDEMANN |
分类号 |
G02B6/02;G02B6/12;G02B6/255;H01S3/067;(IPC1-7):G02B6/00 |
主分类号 |
G02B6/02 |
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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