Study of photonic crystal microcavities coupled with waveguide for biosensing applications

Benelarbi, Dallel; Bouchemat, Touraya; Bouchemat, Mohamed

doi:10.1007/s11082-017-1182-5

Cited by 19 publications

(6 citation statements)

References 26 publications

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“…Several types of sensors that fulfil the mentioned requirements have been investigated, such as resonant micro-cavities [ 2 , 5 , 6 , 7 , 8 ], photonic crystals [ 9 , 10 , 11 , 12 , 13 , 14 ], ring resonators [ 15 , 16 , 17 ] and fiber-optic sensors, such as Fiber Bragg Gratings (FBG) and Long Period Gratings (LPG) [ 4 , 18 , 19 , 20 ], in general combined with optical spectral readout. Many architectures have been developed and tested: in [ 21 ], for instance, Li et al proposed a fiber-optic Fabry–Perot interferometer (FPI) based on a single-mode fiber ending with an open microcavity with the inner surfaces covered with gold films.…”

Section: Introductionmentioning

confidence: 99%

Spectral Optical Readout of Rectangular–Miniature Hollow Glass Tubing for Refractive Index Sensing

Rigamonti

Bello

Merlo

2018

Sensors

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For answering the growing demand of innovative micro-fluidic devices able to measure the refractive index of samples in extremely low volumes, this paper presents an overview of the performances of a micro-opto-fluidic sensing platform that employs rectangular, miniature hollow glass tubings. The operating principle is described by showing the analytical model of the tubing, obtained as superposition of different optical cavities, and the optical readout method based on spectral reflectivity detection. We have analyzed, in particular, the theoretical and experimental optical features of rectangular tubings with asymmetrical geometry, thus with channel depth larger than the thickness of the glass walls, though all of them in the range of a few tens of micrometers. The origins of the complex line-shape of the spectral response in reflection, due to the different cavities formed by the tubing flat walls and channel, have been investigated using a Fourier transform analysis. The implemented instrumental configuration, based on standard telecom fiberoptic components and a semiconductor broadband optical source emitting in the near infrared wavelength region centered at 1.55 µm, has allowed acquisition of reflectivity spectra for experimental verification of the expected theoretical behavior. We have achieved detection of refractive index variations related to the change of concentration of glucose-water solutions flowing through the tubing by monitoring the spectral shift of the optical resonances.

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Section: Introductionmentioning

confidence: 99%

Spectral Optical Readout of Rectangular–Miniature Hollow Glass Tubing for Refractive Index Sensing

Rigamonti

Bello

Merlo

2018

Sensors

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“…In a study conducted by researchers [ 185 ], a biosensor platform was introduced that utilized microcavities coupled to an optical WG. The researchers emphasized the high sensitivity of this platform, measuring approximately 97 nm/RIU.…”

Section: Si Photonics Sensorsmentioning

confidence: 99%

Breakthrough in Silicon Photonics Technology in Telecommunications, Biosensing, and Gas Sensing

Shahbaz,

Butt,

Piramidowicz

2023

Micromachines

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Silicon photonics has been an area of active research and development. Researchers have been working on enhancing the integration density and intricacy of silicon photonic circuits. This involves the development of advanced fabrication techniques and novel designs to enable more functionalities on a single chip, leading to higher performance and more efficient systems. In this review, we aim to provide a brief overview of the recent advancements in silicon photonic devices employed for telecommunication and sensing (biosensing and gas sensing) applications.

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“…Several silicon photonic structures have been designed as label-free biosensors, covering different optical measurements, for example, interferometer-based [ 12 , 13 ], ring resonators [ 14 , 15 ], Bragg grating resonators [ 16 , 17 ], and photonic crystals structures [ 18 , 19 ]. However, the most well-known label-free optical biosensors have been surface plasmon resonance (SPR)-based since Biacore commercialized the first model in 1990 [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

The Design of a Glycerol Concentration Sensor Based on an LRSPP Hybrid Photonic Biosensor

Araújo

Silva

2023

Sensors

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A refractive index sensor based on an on-chip silicon nitride (Si3N4) ridge waveguide long-range surface plasmon polariton (LRSPP) is theoretically designed. The waveguide sensor consists of a gold film to enable the plasmonic resonance on top of a Cytop polymer layer. A proper finite element method was used to design and optimize the geometric parameters at the optical wavelength of 633 nm. In addition, the spectral performance was evaluated using the transfer matrix method from 580 to 680 nm. The redshifted interference spectrum results from an increasing analyte refractive index. The sensitivities of 6313 dB/cm/RIU and 251.82 nm/RIU can be obtained with a 400 nm wide and 25 nm thick Au layer. The proposed sensor has the potential for point-of-care applications considering its compactness and simplicity of construction.

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Study of photonic crystal microcavities coupled with waveguide for biosensing applications

Cited by 19 publications

References 26 publications

Spectral Optical Readout of Rectangular–Miniature Hollow Glass Tubing for Refractive Index Sensing

Spectral Optical Readout of Rectangular–Miniature Hollow Glass Tubing for Refractive Index Sensing

Breakthrough in Silicon Photonics Technology in Telecommunications, Biosensing, and Gas Sensing

The Design of a Glycerol Concentration Sensor Based on an LRSPP Hybrid Photonic Biosensor

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