发明名称 |
Optischer Verstärker und optisches Übertragungssystem mit dem optischen Verstärker |
摘要 |
An optical amplifier for amplifying an optical signal, comprises an optical fiber (28; 54), doped with a rare earth element, having an input end to which the optical signal is input, and an output end; and a pumping light source (30; 68) emitting a pumping light beam to be introduced to either the input end or the output end of said optical fiber; wherein the optical signal being amplified by propagation through said optical fiber; and said pumping light source is provided for outputting a supervisory information. Moreover, an optical transmission system comprises an optical amplifier and a transmission station (21; 50) for transmitting the optical signal to the optical amplifier through an optical transmission line. Moreover, a method of amplifying an optical signal, comprising a step of emitting, from a pumping light source, a pumping light beam to be introduced to either an input end or an output end of an optical fiber doped with a rare earth element; and a step of outputting a supervisory information from the pumping light source. <IMAGE> |
申请公布号 |
DE69029072(T2) |
申请公布日期 |
1997.04.03 |
申请号 |
DE1990629072T |
申请日期 |
1990.08.31 |
申请人 |
FUJITSU LTD., KAWASAKI, KANAGAWA, JP |
发明人 |
SUYAMA, MASUO, SAGAMIHARA-SHI, KANAGAWA, 227, JP |
分类号 |
G02B6/02;G02F1/35;H01S3/06;H01S3/067;H01S3/131;H01S3/17;H04B10/00;H04B10/077;H04B10/294;H04B10/297 |
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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