Multi-component gas sensing based on slotted photonic crystal waveguide with liquid infiltration

Zhang, Yanan; Zhao, Yong; Wang, Qi

doi:10.1016/j.snb.2013.04.082

Cited by 34 publications

(16 citation statements)

References 44 publications

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“…Besides, the PC based sensors can also inherit the favorable characteristics of optical sensors, such as safety in flammable explosive environment, immunity to electromagnetic interference, long-distance monitoring, and rapid response speed. Therefore, during the last decades, many excellent optical sensors based on PC have been investigated and developed in a large range of sensing applications, such as gas sensors [17][18][19], liquid sensors [20], temperature sensors [21], stress sensors [22], refractive index (RI) sensors [23,24], humidity sensors [25][26], and biochemical sensors [16,27].…”

Section: Introductionmentioning

confidence: 99%

A review for optical sensors based on photonic crystal cavities

Zhang

Zhao

2015

Sensors and Actuators A: Physical

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181

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This review covers photonic crystal cavities (PCCs) and their applications in optical sensors, with a particular focus on the structures of different PCCs. For each kind of optical sensor, the specific measurement principle, structure of PCC, and the corresponding sensing properties are all presented in detail. The summary of the reported works and the corresponding results demonstrate that it is possible to realize miniature and high-sensitive optical sensors due to the ultra-compact size, excellent resonant properties, and flexibility in structural design of PCCs. Finally, the key problems and new directions of PCCs for sensing applications are discussed.

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Section: Introductionmentioning

confidence: 99%

A review for optical sensors based on photonic crystal cavities

Zhang

Zhao

2015

Sensors and Actuators A: Physical

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181

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“…Photonic crystal fibers (PCFs) have been attracted a great deal of attention for its incredible performance and large variety of applications. PCF can be used as filters [1], switches [2,3], electro-optical modulators [4,5], polarization converters [6], sensors [7][8][9][10][11][12][13][14][15][16][17], etc. PCF based sensors are smart applications in fiber optic technology which have been investigating and developing since last decade.…”

Section: Introductionmentioning

confidence: 99%

“…PCF based sensors are smart applications in fiber optic technology which have been investigating and developing since last decade. A wide range of sensing applications of PCF are available, such as temperature sensors [7], refractive index (R.I) sensors [8], chemical sensors [9], mechanical sensors [10], pressure sensors [11], gas sensors [12,13], stress sensors [14], pH sensors [15], liquid sensors [16], biosensors [17], and so on. An ideal candidate of optical sensors is index guiding PCF.…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of photonic crystal fiber for liquid sensing applications

et al. 2016

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This paper proposes a hexagonal photonic crystal fiber (H-PCF) structure with high relative sensitivity for liquid sensing; in which both core and cladding are microstructures. Numerical investigation is carried out by employing the full vectorial finite element method (FEM). The analysis has been done in four stages of the proposed structure. The investigation shows that the proposed structure achieves higher relative sensitivity by increasing the diameter of the innermost ring air holes in the cladding. Moreover, placing a single channel instead of using a group of tiny channels increases the relative sensitivity effectively. Investigating the effects of different parameters, the optimized structure shows significantly higher relative sensitivity with a low confinement loss.

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“…Besides, compared to other gas sensors based on PC cavity [10,11], which can only identify the gas species and cannot distinguish the quantity of gas concentration, the practicability of our proposed sensor is greatly improved. Finally, compared to our published gas sensors based on slow light in PC waveguides [27,28], whose detection limit are respectively 3.15 ppm and 1.56 ppm, the sensing properties are equivalent. However, the used PC elements are both slotted photonic crystal waveguide, which is formed by opening a slot along the line defect of PC waveguide.…”

Section: Sensing Results and Discussionmentioning

confidence: 94%

Theoretical research of gas sensing method based on photonic crystal cavity and fiber loop ring-down technique

Qian

Zhao

Zhang

et al. 2016

Sensors and Actuators B: Chemical

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A high-sensitive gas sensing method is proposed, in which miniaturized photonic crystal (PC) cavity is utilized as the sensing element, and cryptophane E molecular is infiltrated in defected holes of PC cavity as the sensitive material to methane gas. Particularly, slow light in side-coupled PC waveguide is optimized to enhance refractive index sensitivity of the PC cavity and fiber loop ring-down technology is used to demodulate output resonant spectrum of the sensing system. Simulation results demonstrate that a refractive index sensitivity of 450 nm/RIU and a quality factor of 1105 can be obtained in the slow light engineered PC cavity. For measurement of methane concentration, the theoretical sensitivity can be up to 4.21 μs/% and the minimum detectable concentration can be as accurate as 2.37 ppm.

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Multi-component gas sensing based on slotted photonic crystal waveguide with liquid infiltration

Cited by 34 publications

References 44 publications

A review for optical sensors based on photonic crystal cavities

A review for optical sensors based on photonic crystal cavities

Design and optimization of photonic crystal fiber for liquid sensing applications

Theoretical research of gas sensing method based on photonic crystal cavity and fiber loop ring-down technique

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