| 发明名称 |
INSUFFICIENT TRANSMISSION LEVEL ALARM TRIGGERING DEVICE FOR THE RECEIVER MODULE OF A FIBRE-OPTICAL TRANSMISSION SYSTEM |
| 摘要 |
<p>An alarm-triggering device for the receiver of an optical-fiber transmission system including in series a filter which has a passband located externally with respect to the band of frequencies employed for optical-fiber transmission and the input of which is connected to an avalanche photodiode, an amplifier, a rectifier, a voltage comparator circuit, and alarm-triggering circuit.</p> |
| 申请公布号 |
EP0034082(B1) |
申请公布日期 |
1983.11.23 |
| 申请号 |
EP19810400109 |
申请日期 |
1981.01.27 |
| 申请人 |
LIGNES TELEGRAPHIQUES ET TELEPHONIQUES L.T.T. |
发明人 |
JARRET, BERTRAND;CORDIER, ROSE |
| 分类号 |
H04B10/69;(IPC1-7):04B9/00 |
主分类号 |
H04B10/69 |
| 代理机构 |
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代理人 |
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| 地址 |
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