Multiplexed detection of xylene and trichloroethylene in water by photonic crystal absorption spectroscopy

Lai, Wei Cheng; Chakravarty, Swapnajit; Zou, Yi; Chen, Ray T.

doi:10.1364/ol.38.003799

Cited by 51 publications

(19 citation statements)

References 21 publications

(34 reference statements)

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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

179

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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

179

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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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“…Various resonance structures have been proposed to optimize the performance of these sensors, including two-dimensional photonic crystal (PhC) micro-cavity resonators [1][2][3][4], one dimensional PhC nanobeam resonators [5][6][7][8], disk resonators [9,10], and ring resonators [11][12][13]. High sensitivity (S) is required in those sensors, which strongly depends on optical loss, light polarization, and the overlap between light and the surrounding material.…”

Section: Introductionmentioning

confidence: 99%

Improving the detection limit for on-chip photonic sensors based on subwavelength grating racetrack resonators

Huang¹,

Yan²,

Xu³

et al. 2017

Opt. Express

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Abstract:Compared to the conventional strip waveguide microring resonators, subwavelength grating (SWG) waveguide microring resonators have better sensitivity and lower detection limit due to the enhanced photon-analyte interaction. As sensors, especially biosensors, are usually used in absorptive ambient environment, it is very challenging to further improve the detection limit of the SWG ring resonator by simply increasing the sensitivity. The high sensitivity resulted from larger mode-analyte overlap also brings significant absorption loss, which deteriorates the quality factor of the resonator. To explore the potential of the SWG ring resonator, we theoretically and experimentally optimize an ultrasensitive transverse magnetic mode SWG racetrack resonator to obtain maximum quality factor and thus lowest detection limit. A quality factor of 9800 around 1550 nm and sensitivity of 429.7 ± 0.4nm/RIU in water environment are achieved. It corresponds to a detection limit (λ/S·Q) of 3.71 × 10 4 RIU, which marks a reduction of 32.5% compared to the best value reported for SWG microring sensors.

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Multiplexed detection of xylene and trichloroethylene in water by photonic crystal absorption spectroscopy

Cited by 51 publications

References 21 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

Improving the detection limit for on-chip photonic sensors based on subwavelength grating racetrack resonators

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