Subjects: Optics >> Quantum optics submitted time 2023-02-19
Abstract： We propose a novel ultrasonic sensor structure composed of Cantilever arm structure slot dual-micro-ring resonators(DMRR).We present a theoretical analysis of transmission by using the coupled mode theory.The mode field distributions and sound pressure distributions of transmission spectrum are obtained from 3D simulations based on Comsol Multi-physics(COMSOL)method.Our ultrasonic sensor exhibit theoretical sensitivity as high as 1462.5mV/kPa,which is 22 times higher than that of single slot-based micro-ring ultrasonic sensor.Our ultrasonic sensor offers higher sensitivity and a larger detection frequency range than conventional piezoelectric based ultrasound transducer.The results show that the sensing characteristics of our system can be optimized through changing the position and the angle of sound field.Our ultrasonic sensor with an area of 25um*60um, the-factor can be approximately 1540 with radius of 5um We detect an angular range of -90o to 90o and a minimum distance of 0.01um. Finally,we calculate the Cantilever arm structure slot DMRR array ultrasonic sensor's optical performance. Our proposed design provides a promising candidate for a hydrophone.
Peer Review Status:
Awaiting Review
Subjects: Optics >> Quantum optics submitted time 2023-02-19
Y. Li
N. An
Z. Lu
Y. Wang
B. Chang
T. Tan
X. Guo
X. Xu
J. He
H. Xia
Z. Wu
Y. Su
Y. Liu
Y. Rao
G. Soavi
B. Yao
Abstract： Surface plasmons in graphene provide a compelling strategy for advanced photonic technologies thanks to their tight confinement, fast response and tunability. Recent advances in the field of all optical generation of graphene plasmons in planar waveguides offer a promising method for high speed signal processing in nanoscale integrated optoelectronic devices. Here, we use two counter propagating frequency combs with temporally synchronized pulses to demonstrate deterministic all optical generation and electrical control of multiple plasmon polaritons, excited via difference frequency generation (DFG). Electrical tuning of a hybrid graphene fibre device offers a precise control over the DFG phase matching, leading to tunable responses of the graphene plasmons at different frequencies across a broadband (0 - 50 THz) and provides a powerful tool for high speed logic operations. Our results offer insights for plasmonics on hybrid photonic devices based on layered materials and pave the way to high speed integrated optoelectronic computing circuits.
Peer Review Status:Awaiting Review
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