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Sensing With Slow Light in Fiber Bragg Gratings
Bragg gratings fi ber gratings optical fi ber sensors slow light
2012/8/7
On the edge of the bandgap in a fiber Bragg grating(FBG) narrow peaks of high transmission exist at frequencies where light interferes constructively in the forward direction.
Ring-coupled Mach–Zehnder interferometer optimized for sensing
Ring-coupled Mach–Zehnder interferometer optimized sensing
2009/8/10
We demonstrate numerically that the theoretical maximum sensitivity of a ring-coupled Mach–Zehnder interferometer (MZI) optimized as a sensor is about 30% greater than the optimized sensitivity of a c...
Enhanced long-range distributed strain and temperature sensing using BOTDA and optical pulse coding
Enhanced long-range distributed strain temperature sensing BOTDA optical pulse coding
2009/7/20
Optical pulse coding is successfully applied to long-range sensors based on Brillouin optical time domain analysis, achieving a record of 1 meter spatial resolution over 50 km of SMF with 2.2°C / 44 μ...
Displacement sensing using evanescent tunneling between guided resonances in photonic crystal slabs
Displacement sensing evanescent tunneling between guided resonances photonic crystal slabs
2005/8/11
Using both analytic theory and first-principles finite-difference time-domain simulations, we introduce a displacement sensing mechanism using photonic crystal slabs coupled in the near-&#...