Brillouin-Active Fibers for Optical Sensing, Logic and Computation in Smart Structures

摘要

We have studied stimulated Brillouin scattering in single-mode optical fibers as a sensor for both ttemperature and strain. Shape Memory allow Nitinol is also studied for enhancement of active sensing and control in structures. We have introduced the hybrid sBs amplifier/oscillator scheme, in which the short fiber amplifier performs sensing and the long oscillator fiber provides the required signal. The sensing fiber can be coated with SMA thin film for ruggedness, increased sBs sensitivity to temperature and strain, and memory or trainability.