Distributed fiber sensor
In an embodiment, a sensor comprises a waveguide comprising a photoacoustic generation element disposed on the waveguide, the photoacoustic generation element comprising a photoabsorptive material; and a sensing element comprising an optical acoustic wave detector. In another embodiment, a sensing system comprises the sensor and a laser. In yet another embodiment, a method of sensing comprises providing the sensing system; heating the photoabsorptive material with a laser to generate an acoustic signal; sensing an intensity of laser light reflected by the optical acoustic wave detector to detect the acoustic signal; and determining a time of flight of the acoustic signal between the generation and the detection to determine a change in a parameter change in a medium between the photoabsorptive material and the optical acoustic wave detector.
- Research Organization:
- Univ. of Massachusetts, Boston, MA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FE0023031
- Assignee:
- University of Massachusetts (Boston, MA)
- Patent Number(s):
- 10,466,207
- Application Number:
- 15/569,112
- OSTI ID:
- 1600249
- Country of Publication:
- United States
- Language:
- English
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