Ultracompact refractive index sensor based on microcavity in the sandwiched photonic crystal waveguide structure

Wang, Xiaoling; Xu, Zhiyuan; Lü, Naiguang; Zhu, Jun; Jin, Guofan

doi:10.1016/j.optcom.2007.11.040

Cited by 68 publications

(30 citation statements)

References 13 publications

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“…As discussed above, PCC exhibits strong field confinement and has long photon lifetime, which give rise to an optical mode with a resonant wavelength that is highly sensitive to RI perturbation attributed to medium that infiltrated in the air holes of PCC, and thus allows us to implement various RI sensors based on PCC [43][44][45][46][47][48][49]. The measurement of RI change of glycerol-water mixture by monitoring the resonant wavelength shifts in various ratios was first demonstrated in 2004 by E. Chow et al [43].…”

Section: Refractive Index Sensormentioning

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: Refractive Index Sensormentioning

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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“…In another case, light will be localized on the defect plane; thus the photonic plane defect is just like a perfect mirror. Properties of the defective state would be changed if a certain analyte is in fi ltrated into the defect position, so the refractive index or other parameters of analyte can be obtained by observing the variation of resonant wavelength (Wang et al 2008a ) . Photons can also be localized vertically by total internal re fl ection (TIR) at the air-slab interface.…”

Section: Photonic Crystals In Gas Sensorsmentioning

confidence: 99%

Photonic Crystals

Korotcenkov

2013

Integrated Analytical Systems

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“…In particular, photonic crystal (PhC) biosensors, because of their strong capability to manipulate light propagation, their miniaturized size, their high spectral sensitivity and their minimal sample preparation, have generated substantial attention as an attractive candidate for available labelfree systems [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…The sensitivity of a device is reflected by the magnitude of light-matter interaction. Among all the different biosensor designs that have been developed, the biosensors based on PC coupled waveguide micro-cavities systems have attracted significant interests due to their compact size, high Qfactor and high S [10][11][12][13][14][15]. However, the design drawback of these biosensors is that they typically operate as point or single detection unit and the number of targets which can be screened for at once is relatively small.…”

Section: Introductionmentioning

confidence: 99%

High sensitive photonic crystal multiplexed biosensor array using H0 sandwiched cavities

Arafa

Bouchemat

et al. 2017

EPJ Web Conf.

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Abstract. We theoretically investigate a high sensitive photonic crystal integrated biosensor array structure which is potentially used for label-free multiplexed sensing. The proposed device consists of an array of three sandwiched H0 cavities patterned above silicon on insulator (SOI) substrate; each cavity has been designed for different cavity spacing and different resonant wavelength. Results obtained by performing finite-difference time-domain (FDTD) simulations, indicate that the response of each detection unit shifts independently in terms of refractive index variations. The optimized design makes possible the combination of sensing as a function of location, as well as a function of time in the same platform. A refractive index sensitivity of 520nm/RIU and a quality factor over 10 4 are both achieved with an accompanied crosstalk of less than -26 dB. In addition, the device presents an improved detection limit (DL) of 1.24.10 -6 RIU and a wide measurement range. These features make the designed device a promising element for performing label-free multiplexed detection in monolithic substrate for medical diagnostics and environmental monitoring.

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Ultracompact refractive index sensor based on microcavity in the sandwiched photonic crystal waveguide structure

Cited by 68 publications

References 13 publications

A review for optical sensors based on photonic crystal cavities

A review for optical sensors based on photonic crystal cavities

Photonic Crystals

High sensitive photonic crystal multiplexed biosensor array using H0 sandwiched cavities

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