Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 25, Issue 10, Pages 932-935Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2013.2256343
Keywords
Acoustic sensing; Fabry-Perot; multilayer graphene; optical fiber sensor
Funding
- National Natural Science Foundation of China [61290313]
- Hong Kong Polytechnic University through Niche Area Fund [J-BB9K]
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A fiber-optic Fabry-Perot acoustic sensor with a similar to 100-nm-thick multilayer graphene diaphragm is reported. Acoustic testing demonstrates a pressure-induced deflection of 1100 nm/kPa and a noise equivalent acoustic signal level of similar to 60 mu Pa/Hz(1/2) at the frequency of 10 kHz. The sensor exhibits a flat frequency response from 0.2 to 22 kHz and may be useful for highly sensitive acoustic sensing.
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