A Fibre Bragg Grating Sensor as a Receiver for Acoustic Communications Signals

Sensors

Graham Wild¹ 

关键词: acoustic sensing;    fibre Bragg grating;    optical fibre sensing;    wireless communications;   

DOI  :  10.3390/s110100455

来源: mdpi

【 摘 要 】

A Fibre Bragg Grating (FBG) acoustic sensor is used as a receiver for acoustic communications signals. Acoustic transmissions were generated in aluminium and Carbon Fibre Composite (CFC) panels. The FBG receiver was coupled to the bottom surface opposite a piezoelectric transmitter. For the CFC, a second FBG was embedded within the layup for comparison. We show the transfer function, frequency response, and transient response of the acoustic communications channels. In addition, the FBG receiver was used to detect Phase Shift Keying (PSK) communications signals, which was shown to be the most robust method in a highly resonant communications channel.

【 授权许可】

CC BY   
© 2011 by the authors; licensee MDPI, Basel, Switzerland.