Monomode optical fiber with protection against tapping of transmitted information, and a transmission method using said fiber
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United States of America Patent
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Jan 22, 1991
Grant Date -
N/A
app pub date -
Aug 28, 1989
filing date -
Aug 26, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The core (2) of a monomode fiber is surrounded by a slightly monomode annular waveguide (6) guiding masking light having the same wavelength as the light conveyed by the core. The invention is particularly suitable for telecommunications.
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