Laser & Optoelectronics Progress, Volume. 58, Issue 13, 1306019(2021)
Review of Fiber Optic Ocean Conductivity-Temperature-Depth Sensor
Fig. 1. Refraction type salinity sensor based on optical prism method[10]. (a) Schematic of salinity measurement system; (b) schematic of light refraction through the sample unit
Fig. 3. FBG sensor that simultaneously measures salinity and temperature[14]
Fig. 4. Salinity sensor based on F-P cavity interferometer[21]
Fig. 5. The structure of temperature and pressure sensor based on fiber tip F-P interferometer[18]
Fig. 6. Schematic of salinity measurement device based on Sagnac interferometer[22]
Fig. 7. Temperature sensor based on nested annular cavity of M-Z interferometer[28]
Fig. 8. Salinity sensor based on two-core optical fiber[29]
Fig. 9. A cross-sectional view of PCF-based sensor[33]
Fig. 10. Sensor system diagram based on multi-mode-single-mode-multi-mode structure[39]
Fig. 11. The design of temperature-salinity-depth multi-parameter sensing probe based on fiber SPR[41]. (a) Structure diagram; (b) principle diagram
Fig. 12. Schematic of salinity sensing system based on microfiber knot resonator[50]
Fig. 13. Schematic of salinity measurement device based on Sagnac interferometer[23]
Fig. 14. Schematic of the salinity sensor based on the microfiber-M-Z interferometer[51]
Fig. 15. Schematic and physical photo of temperature-, salinity-, and depth-sensing experiment system based on OMC[65]. (a) Schematic of the experiment setup for the measurement of salinity, temperature, and depth in seawater; (b) salinity measuring experimental setup and the optical microscopic image of an OMC sample (inset); (c) temperature measuring experimental setup; (d) depth measuring experimental setup
Fig. 16. Temperature-salinity-depth sensor based on OMCI[68]. (a) Structural schematic; (b) optical microscopic image of waist region
Fig. 17. Temperature and pressure sensor structure based on PDMS encapsulated micro-nano fiber M-Z interferometer[69].(a) Schematic; (b) physical image
Fig. 18. Structure and physical photos of UFBG coated temperature and salinity sensor[70]
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Lingjun Zhou, Yang Yu, Zhou Meng. Review of Fiber Optic Ocean Conductivity-Temperature-Depth Sensor[J]. Laser & Optoelectronics Progress, 2021, 58(13): 1306019
Category: Fiber Optics and Optical Communications
Received: Mar. 10, 2021
Accepted: May. 25, 2021
Published Online: Jul. 14, 2021
The Author Email: Yu Yang (yuyang08a@nudt.edu.cn)