发明名称 |
OPTICAL TRANSMISSION DEVICE AND GAIN CONTROL METHOD |
摘要 |
PROBLEM TO BE SOLVED: To solve the conventional problem of difficulty in controlling an optical amplifier gain according to the distance of a transmission line.SOLUTION: An optical transmission device includes: an optical amplifier for amplifying an optical signal; a splitter for splitting transmission light output by the optical amplifier to an optical transmission line from return light returning from the optical transmission line on the basis of the transmission light; and a control circuit for monitoring the signal level of the return light split by the splitter, and for controlling an optical amplifier gain according to the distance of the transmission line estimated from the signal level. |
申请公布号 |
JP2014116882(A) |
申请公布日期 |
2014.06.26 |
申请号 |
JP20120271123 |
申请日期 |
2012.12.12 |
申请人 |
FUJITSU TELECOM NETWORKS LTD |
发明人 |
MATSUYAMA HIROKI |
分类号 |
H04B10/071;H01S3/10;H04B10/564 |
主分类号 |
H04B10/071 |
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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