Optical fibers with varied mode-dependent loss
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United States of America Patent
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Oct 27, 2015
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Jul 3, 2014
app pub date -
Dec 28, 2012
filing date -
Dec 28, 2012
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Abstract
Various embodiments provide for detection of tapping of an optical signal. In one embodiment an optical fiber includes a cladding region and first and second core regions. The first core region has a first core medium having a first mode-dependent loss (MDL) figure of merit. The second core region has a second core medium having a second different MDL figure of merit. Tapping of the optical signal may be determined to occur when the MDL of the first and second optical signals differs by a predetermined threshold value.
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