|Publisher DOI:||10.1109/LPT.2017.2651980||Title:||Optofluidic a-Si:H-based photonic lab-on-chip with dispersion engineered resonance spectra||Language:||English||Authors:||Moldenhauer, Lennart
Trieu, Hoc Khiem
|Keywords:||a-Si:H;Amorphous silicon;integrated optics;lab-on-chip;micro-heater;micro-resonator;optical sensor;thermo-optic effect;tracing||Issue Date:||11-Jan-2017||Publisher:||IEEE||Source:||IEEE Photonics Technology Letters 4 (29): 412-415 (2017-02-15)||Journal:||IEEE photonics technology letters||Abstract (english):||
We report on a lab-on-chip sensor system based on integrated-optical resonators. The photonic components were realized in CMOS-process compatible amorphous silicon and the microfluidic interface enabling directed analyte transport was fabricated with soft-lithography technology. The developed sensor features optical resonators with dispersion engineered resonance spectra (DERS) to match optical resonance peaks over a wavelength region of several free spectral ranges. Resonance shifts caused by changes in refractive index of the investigated analyte are tracked by red-shifting a reference spectrum through the thermo-optic effect using electrical micro-heaters. With the DERS preserving the unambiguousness of the direct proportional relation between resonance shift and necessary heating power, this sensing principle enables direct electronic readout of analyte property changes. The sensor system therefore reduces the number and the size of peripheral devices usually necessary for the analysis of integrated optical devices, resulting in a broader range of potential application scenarios.
|URI:||http://hdl.handle.net/11420/3751||ISSN:||1041-1135||Institute:||Mikrosystemtechnik E-7||Document Type:||Article||Project:||Biosensor auf Basis integrierter Photonik|
|Appears in Collections:||Publications without fulltext|
Show full item record
checked on Dec 2, 2021
checked on Nov 26, 2021
Add Files to Item
Note about this record
Cite this record
Items in TORE are protected by copyright, with all rights reserved, unless otherwise indicated.