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OF4: Optofluidics: Optofluidic Sensors, Modulators and Lasers
10:30 - 12:15
Session Chair: Anders Kristensen, Technical University of Denmark
Location:Room 22a, 2nd floor, ICM Light Engineering and Optofluidics
10:30 - 11:00 Invited
Optofluidic devices based on Silicon photonics
Eva Ryckeboer1,2, Daan Martens1,2, Herbert D'heer1,2, Peter Bienstman1,2, Dries Van Thourhout1,2, Roel Baets1,2
1Photonics Research Group, university of Ghent - imec, Belgium; 2Center for Nano- and Biophotonics, Ghent University, Belgium
Silicon photonics is an attractive technology platform to develop miniaturized optical systems. These optical devices often need to be exposed to liquids or gasses during operation both on a short- and long term scale. Here we illustrate the co-integration of Si photonics devices with optofluidic packaging to achieve this goal.
11:00 - 11:15
Multichannel Si Photonic Crystal filters with Fine-Tuning Capability of Individual Channels for WDM optical interconnects
Joaquin Faneca1,2, Benjamin T. Hogan1,2, Tatiana Perova3,4, Geoffrey R. Nash1, Anna Baldycheva1,3
1University of Exeter, United Kingdom; 2EPSRC Centre for Doctoral Training in Electromagnetic Metamaterials University of Exeter, EX4 4QL, UK; 3Department of Electronic and Electrical Engineering, University of Dublin Trinity College, Dublin 2, Ireland; 4ITMO University, 49 Kronverskiy pr., St.-Petersburg 197101, Russia
In this paper we propose a novel design of a multichannel integrated filter based on silicon-on-insulator (SOI) photonic crystal (PhC) concepts and liquid crystal optofluidics technology. By infiltration of specific periods of a PhC with a liquid crystal (LC) filler, an efficiently coupled Fabry-Pérot micro-resonator can be realised in which the wide stop band (SB) is used for frequency channel separation . Using an example of a coupled triple-cavity PhC filter operated using the first SBs, we have developed a simple model for facile manipulation of the LC within individual cavities, enabling the independent fine tuning of each channel in the overall system.
11:15 - 11:30
Modular Optofluidic Gas Sensors via Solvent Immersion Imprint Lithography
Jayven Moore1, Shahla Nemati2, Sotiris Xantheas1, Enrico Gratton3, Andreas Vasdekis1,2
1Pacific Northwest National Laboratory; 2University of Idaho, United States of America; 3University of California, Irvine
Solvent Immersion Imprint Lithography (SIIL) enables the assembly of optofluidic sensors within only a few seconds of total processing time, including their integration with microfluidic channels. Here, we detail the sensor assembly procedure and underlying molecular-level mechanisms, as well as the sensors’ enhanced performance in the context of sensitivity and dynamic range for gas-phase sensing applications.
11:30 - 11:45
Optical PCB-based Sensor Platform with Direct Laser Written Polymer Waveguides for Sea Water Measurements
Ekaterina Sergeeva, Haldor Hartwig, Robert Schima, Mathias Paschen, Dennis Hohlfeld
University of Rostock, Germany
We present a sensor platform for the measurement of optical extinction in liquids incorporating polymer waveguides, micro cuvettes and electronic circuitry having huge potential in marine research. The waveguides show the distinctive feature of curved or flat end faces to allow specific light propagation in the sensing region.
1Kyushu University, Center for Organic Photonics and Electronics Research (OPERA), Fukuoka, 819-0395, Japan; 2Japan Science and Technology Agency (JST), ERATO, Adachi Molecular Exciton Engineering Project, Kyushu University, Fukuoka, Japan
Non-volatile liquid molecular semiconductors are a promising class of materials for organic optoelectronic applications. Here, I will report on the realization of solvent-free liquid organic semiconductor lasers using either Fabry-Perot microcavity or distributed feedback (DFB) resonator structures. I will then show that an oxygenation of the solvent-free liquid semiconductors can be achieved by a simple bubbling, which enables to quench effectively the photo-generated triplet excitons and to observe lasing under optical pumping in the quasi-continuous wave (cw) regime. Finally, I will discuss about the design and the development of new fluidic light-emitting organic semiconducting materials with improved photophysical and charge transport properties.