A relative humidity sensor based on open-cavity Fabry-Perot interferometer by fiber capillary splicing

Lu, Xiao; Gong, Huaping; Lu, Ye; Liu, Yiting; Shen, Changyu; Chen, Zhao

doi:10.1016/j.yofte.2023.103285

Cited by 5 publications

(2 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Optical fiber humidity sensors (OFHSs) have emerged as the preferred choice due to their unique advantages such as long lifespan, non-corrosiveness, light weight, resistance to electromagnetic interference, and remote sensing. A number of fiber structures have been proposed for humidity sensing based on different working principles, such as gratings [ 2 , 3 ], interferometers [ 4 ], Fabry–Pérot cavities [ 5 ] and resonators [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Femtosecond Laser Inscribed Excessively Tilted Fiber Grating for Humidity Sensing

Jing,

Liu,

Liu

et al. 2024

Sensors

View full text Add to dashboard Cite

We propose a humidity sensor using an excessively tilted fiber grating (Ex-TFG) coated with agarose fabricated using femtosecond laser processing. The processed grating showcases remarkable differentiation between TE and TM modes, achieving an exceptionally narrow bandwidth of approximately 1.5 nm and an impressive modulation depth of up to 15 dB for both modes. We exposed the agarose-coated TFG sensor to various relative humidity levels and monitored the resonance wavelength to test its humidity sensing capability. Our findings demonstrated that the sensor exhibited a rapid response time (2–4 s) and showed a high response sensitivity (18.5 pm/%RH) between the humidity changes and the resonant wavelength shifts. The high sensitivity, linearity, repeatability, low hysteresis, and excellent long-term stability of the TFG humidity sensor, as demonstrated in our experimental results, make it an attractive option for environmental monitoring or biomedical diagnosis.

show abstract

Section: Introductionmentioning

confidence: 99%

Femtosecond Laser Inscribed Excessively Tilted Fiber Grating for Humidity Sensing

Jing,

Liu,

Liu

et al. 2024

Sensors

View full text Add to dashboard Cite

show abstract

“…One of the main principles is the change of reflected optical signal due to the water molecules adsorbed on the surface of a sensing film. Considering that water molecules and sensing films have different refractive indices, changes in humidity affect the intensity/wavelength of the refracted light [11,12].…”

Section: Introductionmentioning

confidence: 99%

Ultra-Sensitive and Fast Humidity Sensors Based on Direct Laser-Scribed Graphene Oxide/Carbon Nanotubes Composites

Al‐Hamry

Chen

et al. 2023

Nanomaterials

View full text Add to dashboard Cite

In this paper, the relative humidity sensor properties of graphene oxide (GO) and graphene oxide/multiwalled nanotubes (GO/MWNTs) composites have been investigated. Composite sensors were fabricated by direct laser scribing and characterized using UV-vis-NIR, Raman, Fourier transform infrared, and X-ray photoemission spectroscopies, electron scanning microscopy coupled with energy-dispersive X-ray analysis, and impedance spectroscopy (IS). These methods confirm the composite homogeneity and laser reduction of GO/MWNT with dominant GO characteristics, while ISresults analysis reveals the circuit model for rGO-GO-rGO structure and the effect of MWNT on the sensor properties. Although direct laser scribing of GO-based humidity sensor shows an outstanding response (|ΔZ|/|Z| up to 638,800%), a lack of stability and repeatability has been observed. GO/MWNT-based humidity sensors are more conductive than GO sensors and relatively less sensitive (|ΔZ|/|Z| = 163,000%). However, they are more stable in harsh humid conditions, repeatable, and reproducible even after several years of shelf-life. In addition, they have fast response/recovery times of 10.7 s and 9.3 s and an ultra-fast response time of 61 ms when abrupt humidification/dehumidification is applied by respiration. All carbon-based sensors’ overall properties confirm the advantage of introducing the GO/MWNT hybrid and laser direct writing to produce stable structures and sensors.

show abstract

A novel optical fiber humidity sensor based on Mach-Zehnder interference and AIEgens

Zhang,

Wu,

et al. 2025

Measurement

View full text Add to dashboard Cite

A relative humidity sensor based on open-cavity Fabry-Perot interferometer by fiber capillary splicing

Cited by 5 publications

References 21 publications

Femtosecond Laser Inscribed Excessively Tilted Fiber Grating for Humidity Sensing

Femtosecond Laser Inscribed Excessively Tilted Fiber Grating for Humidity Sensing

Ultra-Sensitive and Fast Humidity Sensors Based on Direct Laser-Scribed Graphene Oxide/Carbon Nanotubes Composites

A novel optical fiber humidity sensor based on Mach-Zehnder interference and AIEgens

Contact Info

Product

Resources

About