发明名称 |
Digital Frequency Offset Monitor for Coherently Detected Optical Superchannels |
摘要 |
Techniques are provided to estimate a distance of one received optical subchannel to one or both of its neighbor (adjacent) subchannels. An optical field comprised of a plurality of subchannels of optical signals at respective wavelengths is received on an optical fiber. Using coherent optical reception in conjunction with analog-to-digital conversion, the received optical field is converted to digital complex valued data. The digital complex valued data is transformed to the frequency domain to produce spectrum data. Using either a peak method or a gap method, a distance or spacing is computed between a subchannel of interest among the plurality of subchannels and at least one neighbor subchannel based on the spectrum data. |
申请公布号 |
US2013322877(A1) |
申请公布日期 |
2013.12.05 |
申请号 |
US201213487346 |
申请日期 |
2012.06.04 |
申请人 |
GEYER JONAS;DUTHEL THOMAS;CISCO TECHNOLOGY, INC. |
发明人 |
GEYER JONAS;DUTHEL THOMAS |
分类号 |
H04B0010/000008 |
主分类号 |
H04B0010/000008 |
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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