Critical sensitivity effect in an interferometer sensor.
We report the observation of anomalous behavior in the spectral sensitivity response in a specially designed waveguided interferometer sensor. Approaching a definite critical point, the sensitivity increases nonlinearly. Furthermore, at the critical wavelength a new effect of splitting or bifurcation of a minimum dip is observed. The value of the splitting is suggested as an advantageous measure for sensing.
Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel-Aviv University, Tel-Aviv 69978 Israel.
Ronen
R
Levy
Shlomo
S
Ruschin
Damian
D
Goldring