# Selective optomechanically-induced amplification with driven oscillators

## TL;DR

This paper investigates how selective acoustic mode driving in an optomechanical system can amplify and control transparency and signal delay, enabling advanced optical modulation and sensing applications.

## Contribution

It introduces a method for selective acoustic control in OMIT systems to achieve tunable amplification and signal delay effects.

## Key findings

- Selective driving amplifies OMIT peaks.
- Achieves transition from signal advance to delay.
- Enables multi-band optical modulation.

## Abstract

We study optomechanically-induced transparency (OMIT) in a compound system consisting of an optical cavity and an acoustic molecule, which features not only double OMIT peaks but also light advance. We find that by selectively driving one of the acoustic modes, OMIT peaks can be amplified either symmetrically or asymmetrically, accompanied by either significantly enhanced advance or a transition from advance to delay of the signal light. The sensitive impacts of the mechanical driving fields on the optical properties, including the signal transition and its high-order sidebands, are also revealed. Our results confirm that selective acoustic control of OMIT devices provides a versatile route to achieve multi-band optical modulations, weak-signal sensing, and coherent communications of light.