发明名称 |
Multi-wavelength light amplifier |
摘要 |
A multi-wavelength light amplifier includes a first-stage light amplifier which has a first-light amplifying optical fiber amplifying a light input, a second-stage light amplifier which has a second light amplifying optical fiber amplifying a first light output from the first-stage light amplifier, and an optical system which maintains a second light output of the second-stage light amplifier at a constant power level. The first-stage and second-stage light amplifiers have different gain vs wavelength characteristics so that the multi-wavelength light amplifier has no wavelength-dependence of a gain thereof.
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申请公布号 |
US7474459(B2) |
申请公布日期 |
2009.01.06 |
申请号 |
US20020235720 |
申请日期 |
2002.09.06 |
申请人 |
FUJITSU LIMITED |
发明人 |
SUGAYA YASUSHI;TAKEDA MIKI;KINOSHITA SUSUMU;CHIKAMA TERUMI |
分类号 |
H04B10/17;H01S3/067;H01S3/10;H01S3/13;H01S3/131;H04B10/12 |
主分类号 |
H04B10/17 |
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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