期刊
NANOPHOTONICS
卷 12, 期 19, 页码 3707-3719出版社
WALTER DE GRUYTER GMBH
DOI: 10.1515/nanoph-2023-0209
关键词
optical fiber microphone; graphene oxide; Au nanocoating; high-fidelity; real-time communication
A high-fidelity optical fiber microphone with hybrid frequency and fast response has been demonstrated through nanofabrication techniques. It shows high sensitivity, flat frequency response, and a wide measurement range, making it suitable for real-time communication and other applications.
A high-fidelity optical fiber microphone (HF-OFM) with hybrid frequency and fast response is theoretically and experimentally demonstrated by the nanofabrication techniques for real-time communication, which consists of a graphene oxide (GO) film, an Au nanocoating, and an air cavity. The internal stress of the film is increased by the method of mechanical tensile preparation, and the microphone response flatness is improved. Meanwhile, the structural design of the 3 nm Au nanocoating improves the acoustic pressure detection sensitivity by 2.5 times by increasing the reflectivity. The experimental result shows that single, dual, and triple frequency acoustic signal detection in the frequency range of 0.1 kHz- 20 kHz are achieved with acoustic pressure sensitivities of 9.64, 9.66, and 8.9 V/Pa, as well as flat frequency response (<2 dB variation). The minimum detectable pressure (MDP) at 1 kHz is 63.25 mu Pa/Hz1/2. In addition, the high-fidelity real-time transmission of audio signals over an angle range of - 90. to 90. is verified by a self-made acoustic pressure detection device. Such a compact, high sensitivity, and largemeasurement range HF-OFM is very promising for applications of oil leakage exploration, acoustic source location, and real-time communication.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据