发明名称 |
MODULATING A VARIABLE OPTICAL ATTENUATOR |
摘要 |
<p>A method and apparatus are disclosed for operating an eVOA by modulating its attenuation. If an optical signal power is below a loss of signal (LOS) power threshold the eVOA attenuation is set to a maximum attenuation and then, periodically and quickly decreased and increased in steps while checking for the presence of optical signals above the LOS power threshold. The method is also used for operating a multiplicity of eVOAs while minimizing the risk of damage to optical network equipment.</p> |
申请公布号 |
EP1656752(B1) |
申请公布日期 |
2014.05.14 |
申请号 |
EP20040704159 |
申请日期 |
2004.01.22 |
申请人 |
ALCATEL LUCENT |
发明人 |
SCARTH, GORDON, BRUCE;BIERMAN, ROBERT, MICHAEL;GRABNER, STEVE, JOSEPH |
分类号 |
H04B10/077;H04B10/079;H04B10/08 |
主分类号 |
H04B10/077 |
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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