Orientation-sensed optomechanical accelerometers based on exceptional points
Rodion Kononchuk, Tsampikos Kottos
Abstract
We propose an on-chip parity-time symmetric optomechanical platform that detects ultra-small directional accelerations with high signal to noise ratio. The platform consists of two balanced gain/loss cavities embedded in a multilayer photonic crystal with an adjustable layer coupled to mechanical springs. Its deflections due to an acceleration are sensed as a spectral detuning of a transmittance peak near an exceptional point degeneracy.
Topics & Concepts
AccelerometerPhysicsAccelerationOpticsTransmittanceNoise (video)Point (geometry)AcousticsSIGNAL (programming language)OptomechanicsNoise floorLayer (electronics)Photonic crystalPhotonicsSignal processingFrequency spectrumPoint targetOptical fiberCoupling (piping)Mechanical and Optical ResonatorsQuantum Mechanics and Non-Hermitian PhysicsTopological Materials and Phenomena