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5 May 2009 Recent developments in optical fibers and how defense, security, and sensing can benefit
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Abstract
For many years, fiber manufacturers have devoted research efforts to develop fibers with improved radiation resistance, keeping the same advantages and basic properties as standard fibers. Today, both single-mode (SMF) and multimode (MMF) RadHard (for Radiation-Hardened) fibers are available; some of them are MIL-49291 certified and are already used, for example in military applications and at the Large Hadron Collider (LHC) in CERN or in certain nuclear power plants. These RadHard fibers can be easily connected to standard optical networks for classical data transfer or they can also be used for command control. Using some specific properties (Raman or Brillouin scattering, Bragg gratings...), such fibers can also be used as distributed sensing (temperature or strain sensors, etc) in radiation environments. At least, optical fibers can also be used for signal amplification, either in telecom networks, or in fiber lasers. This last category of fibers is called active fibers, in opposition to passive fibers used for simple signal transmission. Draka has also recently worked to improve the radiation-resistance of these active fibers, so that Draka can now offer RadHard fibers for full optical systems.
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E. Régnier, E. Burov, A. Pastouret, D. Boivin, G. Kuyt, F. Gooijer, A. Bergonzo, A. Berkers, P. Signoret, L. Troussellier, O. Storaasli, and P. Nouchi "Recent developments in optical fibers and how defense, security, and sensing can benefit", Proc. SPIE 7306, Optics and Photonics in Global Homeland Security V and Biometric Technology for Human Identification VI, 730618 (5 May 2009); doi: 10.1117/12.818685; https://doi.org/10.1117/12.818685
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