A GaAs/AlGaAs-based refractometer platform for integrated optical sensing applications

Maisenholder, B.; Zappe, Hans; Kunz, R.; Riel, P.; Moser, M.; Edlinger, Johannes

doi:10.1016/s0925-4005(97)80227-4

Cited by 29 publications

(14 citation statements)

References 9 publications

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“…On the other hand, this work demonstrates the value of a flexible sensing method that can accommodate a wider range of molecules than optical methods can. It would be interesting to integrate on-chip refractometers [18] into microfabricated reactor chips to further explore these phenomena with less peripheral contributions to the variance.…”

Section: Deconvolution Of Inlet and Outlet Contributions To Variancementioning

confidence: 99%

Dispersion and Holdup in Multiphase Packed Bed Microreactors

et al. 2008

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Liquid holdup and dispersion are reported for a column of 2 mm internal diameter, filled with 0.1 mm spherical particles, for multiphase flows with hydrocarbon liquid flow rates of 10-100 lL/min and nitrogen gas flow rates of 50-1000 lL/min using different tracers with varying diffusion coefficients and vapor pressures. It was found that the liquid holdup (liquid volume/external void volume) was between 0.65 and 0.85, with variations between different experiments and limited impact of flow rate on the holdup. The dispersion characteristics were very similar to single-phase dispersion. The particle Peclet number for dispersion was close to 0.2. This value was of the same order of magnitude -just a factor of two to three lower -as the value that was obtained without gas flow. Tracer volatility did cause the tracer to elude earlier, but did not cause significant additional dispersion. The results suggest that the fluid mechanical interaction between the gas and the liquid was very limited.

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Section: Deconvolution Of Inlet and Outlet Contributions To Variancementioning

confidence: 99%

Dispersion and Holdup in Multiphase Packed Bed Microreactors

et al. 2008

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“…5 Recently, MZ interferometers using various materials for chemical or biochemical sensing applications have been developed. [6][7][8][9] In these MZ structures, the molecules to be detected are adsorbed at the surface of the interaction zone of the sensing arm and so will interact only with the evanescent field. 10 Different kinds of resonant or antiresonant waveguides constituting the MZ structure can be constructed.…”

Section: A Buried Anti Resonant Reflecting Optical Waveguide For An Imentioning

confidence: 99%

Buried anti resonant reflecting optical waveguide based on porous silicon material for an integrated Mach Zehnder structure

Hiraoui

Guendouz

Lorrain

et al. 2012

Applied Physics Letters

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A buried anti resonant reflecting optical waveguide for an integrated Mach Zehnder structure based on porous silicon material is achieved using a classical photolithography process. Three distinct porous silicon layers are then elaborated in a single step, by varying the porosity (thus the refractive index) and the thickness while respecting the anti-resonance conditions. Simulations and experimental results clearly show the antiresonant character of the buried waveguides. Significant variation of the reflectance and light propagation with different behavior depending on the polarization and the Mach Zehnder dimensions is obtained. Finally, we confirm the feasibility of this structure for sensing applications.

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“…Technologies employed for fabrication of these sensors are prevalently CMOS-compatible (guiding film in silicon, silicon nitride or silicon oxynitride) but glasses [18-19] and III-V semiconductor compounds [20] technologies have been also proposed.…”

Section: Integrated Optical Biosensorsmentioning

confidence: 99%

Guided-Wave Optical Biosensors

Passaro

Dell’Olio

Casamassima

et al. 2007

Sensors

135

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Guided-wave optical biosensors are reviewed in this paper. Advantages related to optical technologies are presented and integrated architectures are investigated in detail. Main classes of bio receptors and the most attractive optical transduction mechanisms are discussed. The possibility to use Mach-Zehnder and Young interferometers, microdisk and microring resonators, surface plasmon resonance, hollow and antiresonant waveguides, and Bragg gratings to realize very sensitive and selective, ultra-compact and fast biosensors is discussed. Finally, CMOS-compatible technologies are proved to be the most attractive for fabrication of guided-wave photonic biosensors.

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A GaAs/AlGaAs-based refractometer platform for integrated optical sensing applications

Cited by 29 publications

References 9 publications

Dispersion and Holdup in Multiphase Packed Bed Microreactors

Dispersion and Holdup in Multiphase Packed Bed Microreactors

Buried anti resonant reflecting optical waveguide based on porous silicon material for an integrated Mach Zehnder structure

Guided-Wave Optical Biosensors

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