Integrated and compact fiber-optic conductivity-temperature-depth (CTD) sensor for marine detection

Wang, Jianuo; Zhou, Xin; Miao, Yongfei; Jiang, Gaocheng; Tong, Lili; Tao, Pengcheng; Yu, Qingxu; Peng, Wei

doi:10.1016/j.optlastec.2023.109523

Cited by 12 publications

(3 citation statements)

References 27 publications

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“…This protective coating not only extends the life of the sensor but also ensures reliable operation in harsh conditions [21,22]. Second, through the clever design of the coating layer, the optical fiber sensor can simultaneously detect a variety of target substances, especially to realize the detection of physical quantities or substances that are not sensitive to the optical fiber [23]. The fluorescent In addition, Long Period Fiber Grating (LFPG) sensors [14,15], Fabry-Pérot Interferometer (FPI) sensors [16,17], Michelson Interferometer (MI) sensors [18,19], Mach-Zehnder Interferometer (MZI) sensors [20], and others are also mature technologies.…”

Section: The Basic Principle Of Optical Fiber Sensorsmentioning

confidence: 99%

“…This protective coating not only extends the life of the sensor but also ensures reliable operation in harsh conditions [21,22]. Second, through the clever design of the coating layer, the optical fiber sensor can simultaneously detect a variety of target substances, especially to realize the detection of physical quantities or substances that are not sensitive to the optical fiber [23]. The fluorescent optical fiber sensors coated with fluorescent dye can be used to measure a blood glucose concentration with high sensitivity and accuracy.…”

Section: The Basic Principle Of Optical Fiber Sensorsmentioning

confidence: 99%

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Application of Optical Fiber Sensing Technology and Coating Technology in Blood Component Detection and Monitoring

Qu,

Chen,

et al. 2024

Coatings

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The advantages of optical fiber sensors include their miniaturization, strong anti-interference ability, high sensitivity, low cost, and fast response speed. They can be used for in situ detection in harsh environments, making them suitable for a wide range of applications such as blood detection and monitoring. This technology holds great potential for medical diagnosis and health monitoring, opening up new possibilities in the field. Coating technology plays a crucial role in enhancing the sensitivity and stability of optical fiber sensors, ultimately improving their measurement accuracy and reliability. This manuscript expounds the application status and progression of optical fiber sensors in the determination of blood glucose concentrations, blood pH, diverse proteins in blood, and physical properties of blood. The principle of optical fiber sensors and the application of coating technology for detecting varying targets are scrutinized in detail, with particular emphasis on the advantages and limitations of distinct design schemes. The adept amalgamation of optical fiber sensing technology and coating technology amplifies the adaptability of optical fiber sensors in diverse practical scenarios, thereby presenting novel instruments and methodologies for researchers in pertinent fields to augment their advancement and development.

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Section: The Basic Principle Of Optical Fiber Sensorsmentioning

confidence: 99%

“…This protective coating not only extends the life of the sensor but also ensures reliable operation in harsh conditions [21,22]. Second, through the clever design of the coating layer, the optical fiber sensor can simultaneously detect a variety of target substances, especially to realize the detection of physical quantities or substances that are not sensitive to the optical fiber [23]. The fluorescent optical fiber sensors coated with fluorescent dye can be used to measure a blood glucose concentration with high sensitivity and accuracy.…”

Section: The Basic Principle Of Optical Fiber Sensorsmentioning

confidence: 99%

Application of Optical Fiber Sensing Technology and Coating Technology in Blood Component Detection and Monitoring

Qu,

Chen,

et al. 2024

Coatings

View full text Add to dashboard Cite

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“…Current autonomous sampling platforms emphasize the need for technologies with fast dynamic responses to changing environments and stability during long deployments. In both commercially available and state-of-the-art CTD sensors, most depth measurements are classified as resonant quartz crystal sensors, optical fiber sensors, or piezoresistive sensors [11,12]. Piezoresistive sensors constitute the majority of cataloged sensors, exhibit a fast resistance change in response to mechanical load, and have a simpler working mechanism that requires less expensive fabrication.…”

Section: Introductionmentioning

confidence: 99%

Practical Considerations for Laser-Induced Graphene Pressure Sensors Used in Marine Applications

Van Volkenburg,

Ayoub,

Alemán Reyes

et al. 2023

Sensors

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Small, low-power, and inexpensive marine depth sensors are of interest for a myriad of applications from maritime security to environmental monitoring. Recently, laser-induced graphene (LIG) piezoresistive pressure sensors have been proposed given their rapid fabrication and large dynamic range. In this work, the practicality of LIG integration into fieldable deep ocean (1 km) depth sensors in bulk is explored. Initially, a design of experiments (DOEs) approach evaluated laser engraver fabrication parameters such as line length, line width, laser speed, and laser power on resultant resistances of LIG traces. Next, uniaxial compression and thermal testing at relevant ocean pressures up to 10.3 MPa and temperatures between 0 and 25 °C evaluated the piezoresistive response of replicate sensors and determined the individual characterization of each, which is necessary. Additionally, bare LIG sensors showed larger resistance changes with temperature (ΔR ≈ 30 kΩ) than pressure (ΔR ≈ 1–15 kΩ), indicating that conformal coatings are required to both thermally insulate and electrically isolate traces from surrounding seawater. Sensors encapsulated with two dip-coated layers of 5 wt% polydimethylsiloxane (PDMS) silicone and submerged in water baths from 0 to 25 °C showed significant thermal dampening (ΔR ≈ 0.3 kΩ), indicating a path forward for the continued development of LIG/PDMS composite structures. This work presents both the promises and limitations of LIG piezoresistive depth sensors and recommends further research to validate this platform for global deployment.

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All-fiber MZI hydrostatic pressure sensor

Ding,

Chen,

Luo

et al. 2024

Optics & Laser Technology

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Integrated and compact fiber-optic conductivity-temperature-depth (CTD) sensor for marine detection

Cited by 12 publications

References 27 publications

Application of Optical Fiber Sensing Technology and Coating Technology in Blood Component Detection and Monitoring

Application of Optical Fiber Sensing Technology and Coating Technology in Blood Component Detection and Monitoring

Practical Considerations for Laser-Induced Graphene Pressure Sensors Used in Marine Applications

All-fiber MZI hydrostatic pressure sensor

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