On-chip wavelength detection
PARC has developed a variety of novel optical detector components and subsystems. By integrating expertise from multiple disciplines — including optics, semiconductor physics, system engineering, fluidics, and biochemistry — PARC scientists have enabled a host of low-cost, compact, high-performance optical detection applications. The detector systems are based on four underlying technologies. The first is a chip-size spectrometer that takes advantage of large light-emitting areas or moving light sources. The second is the development of a precise wavelength-shift detector with sub-picometer resolution. Next is the development and incorporation of an anti-resonant waveguide that confines light in fluids and enables large-volume interaction between light and target molecules. Finally, we have well-known and long-standing expertise in the development light emitting and laser diodes in the UV. Our detector platform enables two complementary areas of potential application. The first is optical characterization systems. This includes bio-agent detection and characterization (e.g., our spectroscopy-on-a-chip enables a portable module for class identification of biomolecules in fluids), health care services and point-of-care detection, environmental monitoring, and industrial process control. The other is optical sensing systems. We have developed interrogation units for optical sensors (e.g., fiber sensors) that are lightweight, robust, and inexpensive and display sub-picometer resolution. Areas of application include the very broad field of structural health monitoring as well as automotive sensing and information processing and biochemical sensing.
Kiesel, P. ; Schmidt, O. ; Bassler, M. ; Johnson, N. M. On-chip wavelength detection. DARPA Microsystems Technology Symposium; 2007 March 04; San Jose; CA; USA.