Beam selector dependent on incident angle by guided-mode resonant subwavelength grating

Nie, Yan; Wang, Lei; Wang, Zhiheng; Lai, Chengjun

doi:10.1117/1.1511531

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…To calculate the total reflected wave represented by a phaser sum of all externally propagating field components, the rigorous coupled-wave analysis derived from Maxwell's equations is a general method, [26][27][28][29] without respect to correspond to the TE 30 and the TM waveguide modes. The simulation for biosensor design is theoretically analyzed according to rigorous coupled mode analysis (RCWA), 31,32 which is to optimize the major parameters in GMR device, such as duty cycle, grating depth, waveguide depth and so on, to prove the detection limits, the line width of the central wavelength. [33][34][35][36][37][38] In this work, it has tried to design a novel setup of the GMR device which is a major element to detect the depth (or refractive index) changes in biosensor and to combine with the microfluidic system to achieve the real-time monitoring.…”

Section: Model and Simulation For Gmrmentioning

confidence: 99%

Novel GMR-based biochip

et al. 2005

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For the detection of molecular interaction, a novel approach of the guided-mode resonance (GMR) spectroscopy identifies molecules via specific bindings with their ligands immobilized on the grating surface is presented. The structure of GMR device generally consists of two stages -upper grating layer and waveguide layer. When the wide-band light illuminating, the GMR device inhibits on a specific resonant narrow-band of wavelength, and allows for other wavelength to transmit. The specific resonant narrow-band of wavelength results in the diffraction of the incident wide-band wave and the selection in the waveguide layer. This is very useful in highly sensitive measurement, especially for the variations in the refractive index of bulk media, and for the monitoring of variations in the thickness of thin film. In the simulation, one Si 3 N 4 (n = 2) GMR device is designed. When the wavelength of the illumination ranges from 1520nm to 1620nm, the resonant peak wavelength will shift 0.03nm as per 1nm bio-layer (n bio = 1.3) has been attached on. Finally, on the basis of the theoretical analysis, the optimization of a spectral GMR sensor in terms of the operation wavelength has been carried out.

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Section: Model and Simulation For Gmrmentioning

confidence: 99%

Novel GMR-based biochip

et al. 2005

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“…The major label-free methods actually are including the surface plasmon resonance (SPR) [1][2][3], grating couplers, ellipsometry [4][5], and guided-mode resonance (GMR) sensor [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Among those, the guided-mode resonance (GMR) sensor takes more advantages of compact structure and instant measuring.…”

Section: Introductionmentioning

confidence: 99%

Real-time monitoring on peptide synthesis by GMR biosensors

Lue

Ding

Yang

et al. 2011

2011 4th International Conference on Biomedical Engineering and Informatics (BMEI)

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In this work, a real-time monitoring system has been developed. The micro-optic device applying the guided-mode resonance (GMR) effect has been designed and fabricated. By combining a simple and low cost microfluidic channel, the GMR measurement for detecting peptide synthesis reaction has been explored. It is able to determine whether or not the chemical reaction reacts and how far the chemical reaction arrived. In addition, the kinetics analysis for the peptide synthesis has also been discussed. It is successfully demonstrated that the GMR device is capable of monitoring the process of peptide synthesis in real time.

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Wide dynamic range wavefront sensor using sub-wavelength grating array

Liang

Liu

2015

Optics Communications

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Beam selector dependent on incident angle by guided-mode resonant subwavelength grating

Cited by 6 publications

References 12 publications

Novel GMR-based biochip

Novel GMR-based biochip

Real-time monitoring on peptide synthesis by GMR biosensors

Wide dynamic range wavefront sensor using sub-wavelength grating array

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