发明名称 |
Apparatus and method for tracking optical wavelength in WDM passive optical network using loop-back light source |
摘要 |
An optical wavelength tracking apparatus and method in a wavelength division multiplexed (WDM) passive optical network (PON) in which a central office (CO) having a multi-frequency light source is connected to a plurality of optical network units (ONUs) having loop-back light sources through a WDM MUX/DEMUX in a remote node (RN). The power levels of downstream and upstream WDM optical signals are measured. The WDM wavelengths of the multi-frequency light source and the WDM MUX/DEMUX are controlled to be nearly identical in order to minimize the difference between the power levels of the downstream and upstream WDM optical signals.
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申请公布号 |
US2005047784(A1) |
申请公布日期 |
2005.03.03 |
申请号 |
US20040780132 |
申请日期 |
2004.02.17 |
申请人 |
JUNG DAE-KWANG;OH YUN-JE;HWANG SEONG-TAEK |
发明人 |
JUNG DAE-KWANG;OH YUN-JE;HWANG SEONG-TAEK |
分类号 |
H04J14/00;H04B10/12;H04B10/155;H04B10/20;H04B10/26;H04J14/02;(IPC1-7):H04J14/00 |
主分类号 |
H04J14/00 |
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