Resonant Light Scattering Toward Optical Fiber Humidity Sensors
Mahboubeh Dehghani Sanij , Abolfazl Bahrampour , Ali Reza Bahrampour
Photonic Sensors ›› 2018, Vol. 9 ›› Issue (1) : 60 -68.
Resonant Light Scattering Toward Optical Fiber Humidity Sensors
The deposition of tetrakis (4-sulonatophenyl) porphyrin (TPPS) thin film on optical fibers presents many possibilities for sensing applications. The J-form aggregation with a narrow and sharp spectral feature at about 490 nm and its sensitivity to humidity have been discussed; a fast change of wavelength occurs according with variation in the humidity level. The reproducibility and high sensitivity of TPPS-coated fibers, along with the capabilities of optical fibers, suggest the device as a good candidate for humidity sensing in harsh environments.
Humidity / chemical / porphyrin-based / chemical optical fiber sensor
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