Chitosan based fiber-optic Fabry–Perot humidity sensor

Chen, Li Han; Tao, Li; Chan, Chi Chiu; Menon, Rajesh; Balamurali, P.; Shaillender, M.; Neu, Björn; Ang, Xiu Min; Zu, Peng; Wong, Wei Chang; Leong, K. C.

doi:10.1016/j.snb.2012.04.052

Cited by 225 publications

(83 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of the change in the refractive index of MC coating, the change rate of the wavelength is higher than that of the intensity, which is completely consistent with Lorenz theoretical analysis [15]. The MC refractive index will rise with the increase of humidity at the temperature below 50 ∘ C. When MC is expanded in the water, its refractive index will reach the cladding one, which leads to the fact that most higher-order modes in the cladding will not be guided by the reducing intensity of transmitted light.…”

Section: Resultssupporting

confidence: 84%

Improving the Sensitivity of Humidity Sensor Based on Mach-Zehnder Interferometer Coated with a Methylcellulose

Huang

Wang

2018

International Journal of Optics

View full text Add to dashboard Cite

A novel humidity sensor based on Mach-Zehnder interferometer (MZI) with the single-mode fiber (SMF) coated with methylcellulose (MC) is proposed and experimentally demonstrated. The MZI consists of two waist enlarged structures. Such an all-fiber MZI incorporates an intermodal interference between the core mode and cladding modes. The MC is coated on the surface of the SMF. External humidity changes the refractive index of MC, causing the intensity changes of the interference pattern. The proposed sensor is linearly responsive to refractive humidity (RH) within the range from 45% to 85% RH, with sensitivity of 0.094 dB/%RH. Moreover the insensitivity of the fiber to the temperature makes this structure more suitable for practical measurement.

show abstract

Section: Resultssupporting

confidence: 84%

Improving the Sensitivity of Humidity Sensor Based on Mach-Zehnder Interferometer Coated with a Methylcellulose

Huang

Wang

2018

International Journal of Optics

View full text Add to dashboard Cite

show abstract

“…For example, in [35,36] a hollow core fiber fragment is used to create a gap between a SMF and the sensing film made of chitosan and PSS. This way, a bovine serum albumine sensor has been fabricated.…”

Section: Interferometric Nano-cavitiesmentioning

confidence: 99%

Nanostructured Materials in Optical Fiber Sensing

Hernáez¹

2013

TOOPTSJ

View full text Add to dashboard Cite

This work comprehends a review of nanostructured materials employed in the fabrication of optical fiber sensors in the last years. The continuous advances in nanofabrication techniques have enabled to manipulate the matter precisely producing well defined nanostructurated coatings or repetitive patterns at nanoscale level. The interactions of light with these nano-organized materials or patterns at the nanoscale level enable to observe interesting phenomena, such as interferometry, fluorescence, absorbance, resonances and many others which can be exploited in the fabrication of sensing devices. A particular case consists of optical fiber sensors, where the light travelling through an optical fiber interacts with the sensitive layer. The properties of the sensitive layer, such as the organization, physical properties, chemical bounds etc. will determine the sensing characteristics of the final device. The utilization of some of the most common nanostructured materials, such as polymers, nanoparticles, metals, metal oxides or biological coatings are reviewed here.

show abstract

“…Optical sensors to detect heavy metal ions have been developed by various methods such as reflectance [4,5], absorption [6], Fabry-Perot interferometer [7,8], and fluorescence [9]. Fabry-Perot interferometer (FPI) method has the ease of fabrication, high sensitivity, and fast response, making it suitable to be used as distributed optical sensors.…”

Section: Introductionmentioning

confidence: 99%

“…Optical sensor with a FPI method was also developed for various applications such as pressure measurement [13], humidity sensor [7,14], liquid level measurement [15], temperature and strain sensor [16], acoustic emissions measurement [17], and gas detection [18]. However, the FPIbased optical sensor for the detection of cadmium ion has not been fully explored.…”

Section: Introductionmentioning

confidence: 99%

Chitosan Layer Fabry-Perot Interferometer-Based Optical Fiber Sensor for Cadmium Ion Detection

2016

3rd International Conference on Innovative Engineering Technologies (ICIET'2016) August 5-6, 2016 Bangkok (Thailand)

View full text Add to dashboard Cite

Abstract-Optical sensors based on Fabry-Perot interferometer to detect cadmium ions is proposed. The sensor was fabricated by coating the tip of the optical fiber by chitosan. The two chitosan surfaces serve as mirrors which form a Fabry-Perot interferometer. The characterization results indicate that the sensor has a linear response with sensitivity of 0.0884 dBm/ppm with a correlation factor of 0.9665. The sensor reach steady state response in 5 minutes.

show abstract

Chitosan based fiber-optic Fabry–Perot humidity sensor

Cited by 225 publications

References 21 publications

Improving the Sensitivity of Humidity Sensor Based on Mach-Zehnder Interferometer Coated with a Methylcellulose

Improving the Sensitivity of Humidity Sensor Based on Mach-Zehnder Interferometer Coated with a Methylcellulose

Nanostructured Materials in Optical Fiber Sensing

Chitosan Layer Fabry-Perot Interferometer-Based Optical Fiber Sensor for Cadmium Ion Detection

Contact Info

Product

Resources

About