We propose a new approach for secret key exchange involving the variation of the cavity length of an ultra-long fibre laser. The scheme is based on the realisation that the free spectral range of the laser cavity can be used as an information carrier. We present a proof-of-principle demonstration of this new concept using a 50-km-long fibre laser to link two users, both of whom can randomly add an extra 1-km-long fibre segment.
|Title of host publication||17th International Conference on Transparent Optical Networks (ICTON 2015)|
|Editors||Marek Jaworski, Marian Marciniak|
|Place of Publication||Warsaw (PL)|
|Number of pages||4|
|Publication status||Published - 2015|
|Event||17th International Conference on Transparent Optical Networks - Budapest, Hungary|
Duration: 5 Jul 2015 → 9 Jul 2015
|Conference||17th International Conference on Transparent Optical Networks|
|Abbreviated title||ICTON 2015|
|Period||5/07/15 → 9/07/15|
|Other||17th International Conference on Transparent Optical Networks (ICTON 2015) and 7th Sub-Wavelength Photonics Conference (SWP 2015) and 13th Colloquium on Microwave Communications (MICROCOLL 2015)|
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Funding: French National Research Agency (LABEX SIGMALIM; ANR 08-JCJC-0122 PARADHOQS); European Research Council (ULTRALASER); Leverhulme Trust (RPG-
278); Spanish MICINN (TEC2011-27314 (RAMAS); and XLIM Institute (VIP2013).
- fibre lasers
- fibre optics communications
- optical security and encryption