Open AccessOptomechanical nonlinearity enhanced optical sensors
Author(s) -
Jiahua Fan,
Chenguang Huang,
Lin Zhu
Publication year - 2015
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.002973
Subject(s) - resonator , optics , optomechanics , physics , sensitivity (control systems) , coupling (piping) , nonlinear system , dissipative system , nonlinear optics , resonance (particle physics) , transmission (telecommunications) , phase (matter) , displacement (psychology) , optical power , optical force , optoelectronics , materials science , optical tweezers , laser , computer science , psychology , particle physics , quantum mechanics , electronic engineering , metallurgy , psychotherapist , engineering , telecommunications
We propose and investigate an ultra-sensitive optical sensor system based on optomechanically induced nonlinear effects in high-Q optical resonators. In both dispersive and dissipative optomechanical systems, a positive feedback is formed between the optical resonance frequency and the mechanical displacement, which results in nonlinear transmission spectra different from a Lorentzian profile. Given the same resonator design, the optomechanical nonlinearity can increase the overall sensitivity by at least two orders of magnitude. Further improvement is possible by employing the phase sensitive detection. For the stable operation of the proposed sensor, we also analyze the requirement on the input power and the optomechanical coupling rate to overcome the thermal-optically induced frequency shift.