A Mass Sensor Based on Two Complete Synchronized Optomechanical Oscillators

Abstract

Abstract In this work, we study the realization of stable complete synchronization in two coupled optomechanical systems with a master-slave configuration. By taking the open-plus-close-loop method as coupling scheme, it is verified that the mechanical and optical mode in the coupled systems with parameters mismatched can be simultaneously synchronized both in linear and nonlinear regime, and even in chaotic state. Based on the achieved complete synchronization, the coupled systems are then explored in mass sensing applications. By taking one of the coupled as sensing part, we develop the coupled system setting in complete synchronization as a mass sensor. It is revealed that a tiny mass added on the sensing part will lead to desynchronization, and the quantities of added mass can be determined by calculating a designed similarity measure.