Research Update on Optical Fiber: February -2019

Microstructured Optical Fiber-Based Plasmonic Sensors

Surface plasmon resonance (SPR) could be a significantly growing optical sensing approach that has been utilized in wide selection of applications together with medical medicine, biological and chemical analyte detection, environmental observation, and food safety to security. SPR sensing technique shows high sensitive nature because of chickenfeed of sample index of refraction, compared to alternative optical sensing techniques. Recently, microstructured optical fiber-based plasmonic sensors have shown nice development because of its compact structure and light-weight dominant capabilities in unprecedented  ways that. The goal of this chapter is to (1) describe the principle operation of plasmonic sensors, (2) discuss the optical properties of plasmonic materials, (3) compare and distinction the various kinds of microstructured optical fiber-based plasmonic sensors, and (4) highlight the most challenges of microstructured plasmonic sensors and attainable solutions. [1]

Polymer optical fiber-based sensing element for cooccurring measure of breath and pulse below dynamic movements

In this paper, we tend to gift the event of a compound optical fibre (POF) detector for cooccurring mensuration of breath (BR) and heart rates (HR). The detector is embedded as a sensible textile resolution which will be used at intervals the user’s garments. additionally, a proof process technique is projected for getting the hour and BR while not the influence of body movements and in numerous positions of the user’s chest. detector signal process and analysis are created within the frequency domain and totally different filters are applied. Results show errors below four beats per minute and a pair of breaths per minute for the hour and BR, severally, even once the user is performing arts periodic body movements like those iatrogenic by the gait. Thus, the projected POF-based good textile could be a affordable resolution with sensible accuracy which will be promptly applied within the remote observance of patients reception while not worrisome their daily activities. [2]

Highly Reproducible, Isotropic Optofluidic Laser Based on Hollow Optical Fiber

We report a reproducible  optofluidic optical device (OFL) for multichannel organic chemistry sensing. A hollow fiber (HOF) is each microring resonator for lasing and microfluidic channel. The lasing mechanism is analyzed in spectral domain. due to the precise management of the fiber pure mathematics and also the movement symmetry, the HOF-OFL emission is uniformly distributed within the angular direction ( σ = zero.6%) and might be used handily for disposable or panoplied use. associate degree array of 10 OFLs is incontestable  with sensible reliableness ( σ = three.9%) in optical device threshold. The panoplied sensing capability of the OFL is additionally investigated. The HOF-OFLs are extremely reproducible , straightforward to integrate in chip-scale, and have nice potential for organic chemistry detection. [3]

Ultrafast optical fiber-based electron gun to reveal atomic motions

One of the foremost enduring “Holy Grail” experiments in science has been makes an attempt to directly observe atomic motions throughout structural changes. This prospect underpins the complete field of chemistry as a result of a action happens throughout a transition state — the purpose of no come back separating the chemical configuration from the merchandise configuration. [4]

A Simple ratio detector using glass fiber Coated with atomic number 3 Chloride

A simple glass fiber ratio detector was fancied employing a atomic number 3 chloride film coated on the distal finish of sensing fiber. The device, atomic number 3 chloride film whose ratio is sensitive to wetness, thereby changes the mirrored intensity level of the sensing finish. By watching the modification of mirrored intensity level underneath totally different RH levels, the data regarding RH of the surroundings will be obtained. A distinction of up to zero.64uW of the mirrored optical power is ascertained once RH changes from eleven to seventy five. The LiCl-based detector features a sensitivity of regarding zero.01uW/%RH with a slope one-dimensionality of quite ninety nine.8%. The experimental setup is easy and simple to handle. The results demonstrate that LiCl-based glass fiber detector is sensitive, economical, flexible, and quick response, has the potential of remote on-line watching wetness. [5]

 

Reference

[1] Rifat AA, Hasan MR, Ahmed R, Miroshnichenko AE. Microstructured optical fiber-based plasmonic sensors. InComputational Photonic Sensors 2019 (pp. 203-232). Springer, Cham. (web link)

[2] Leal-Junior AG, Díaz CR, Leitão C, Pontes MJ, Marques C, Frizera A. Polymer optical fiber-based sensor for simultaneous measurement of breath and heart rate under dynamic movements. Optics & Laser Technology. 2019 Jan 1;109:429-36. (web link)

[3] Xu Y, Gong C, Chen Q, Luo Y, Wu Y, Wang Y, Peng GD, Rao YJ, Fan X, Gong Y. Highly Reproducible, Isotropic Optofluidic Laser Based on Hollow Optical Fiber. IEEE Journal of Selected Topics in Quantum Electronics. 2019 Jan;25(1):1-6. (web link)

[4] Ultrafast optical fiber-based electron gun to reveal atomic motions

Date: October 9, 2018

Source: American Institute of Physics (web link)

[5] A Simple Relative Humidity Sensor Employing Optical Fiber Coated with Lithium Chloride

Bao- Kai Zhang

Laboratory of Nanophotonic Functional Materials and Devices, School for Information and Optoelectronic Science and Engineering, South China Normal University, 510006 Guangzhou, China

Chun- Hua Tan

Laboratory of Nanophotonic Functional Materials and Devices, School for Information and Optoelectronic Science and Engineering, South China Normal University, 510006 Guangzhou, China . (web link)

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