Photonic lab-on-a-chip nanobiosensors for early diagnostics at the point-of-care
Laura M. LECHUGA
Nanobiosensors and Bioanalytical Applications Group
Catalan Institute of Nanoscience and Nanotechnology (ICN2) CSIC,
The Barcelona Institute of Science and Technology and CIBER-BBN. Barcelona (Spain)
Portable point-of care (POC) devices for in-vitro diagnostics will be a milestone for the achievement of universal healthcare and environmental protection. Motivated by potential benefits such as sensor miniaturisation, multiplexing capabilities and relevant sensitivities in a label-free scheme, Silicon photonics based-biosensors are the most suitable candidates to achieve such ambitious POC devices. These photonic biosensors consist of compact waveguides contained on chips which can be easily miniaturized and fabricated in arrays of identical sensors for multiplexed analysis.
GaSb-based single-mode distributed feedback lasers for sensing
James A. GUPTA, Andrew BEZINGER, Jean LAPOINTE,
Daniel POITRAS, Geof C. AERS
National Research Council of Canada, M50 Montreal Road,
Ottawa K1A 0R6, Canada
GaSb-based tunable single-mode diode lasers can enable rapid, highly-selective and highly-sensitive absorption spectroscopy systems for gas sensing. In this work, singlemode distributed feedback (DFB) laser diodes were developed for the detection of various trace gases in the 2-3.3um range, including CO2, CO, HF, H2S, H2O and CH4. The lasers were fabricated using an index-coupled grating process without epitaxial regrowth, making the process significantly less expensive than conventional DFB fabrication.
Ultra-Low Loss Si3N4 Waveguide Passive and Active Next Generation Photonic Integration for Optical Gyroscopes and Communications Applications
Daniel J. Blumenthal
University of California at Santa Barbara, Room 2221F Engineering Sciences Building, Santa Barbara, CA, 93106, USA
The ultra low-loss Si3N4 waveguide platform has yielded a wide range of passive and active components that open up new PIC applications. Devices and applications including long delays, 3D stacking, gratings, filters, erbium amplifiers switches, vertical couplers and optical gyros, lasers and adaptive dispersion compensators.