Photonic Materials and Devices for RF (mmW) Sensing and Imaging.

摘要

Within the scope of previous efforts for ONR, the University of Delaware has developed and demonstrated a novel technique for imaging in the millimeter-wave spectrum without the use of traditional imaging optics. Efforts have been ongoing to develop a two dimensional array. However, the effective implementation of this technology is hampered by the availability of component technologies that, while critical to this effort, had not yet become commercially available. These technologies have not yet been developed for the most part due to a lack of a commodity market rather than significant technological barriers to entry. Under this effort, we have successfully developed these component technologies sufficiently to realize their use in the proposed optical upconversion imaging scheme. The component technologies developed under this effort include: packaged high-speed optical modulators, large area optical filters for carrier rejection, and 2-D fiber array geometries for distributed aperture optical synthesis. Using these components, both a W-band scanning, single-pixel imager and a Q-band interferometric imager have been fabricated.