Science Daily September 26, 2019
Researchers at the University of Pennsylvania used a standard semiconductor fabrication process to make a microwave imager chip, measuring just over 2 millimeters on each side, containing more than 1,000 photonic components. The imager uses four antennas to receive microwave signals reflected from an object. The microwave signals are then encoded into an optical signal and are optically processed to form an image. To demonstrate the new chip, the researchers used it to image objects with metallic surfaces. The system is significantly smaller and more efficient than its electronic equivalent and can operate with significantly shorter microwave pulses producing higher resolution. They plan to increase the number of pixels, use more advanced fabrication technologies and stitch smaller images together. They also want to use shorter microwave pulses to achieve higher resolution…read more. Open Access TECHNICAL ARTICLE
Multi-beam antenna arrays and delay line implementation using silicon waveguides… Credit: Optica Vol. 6, Issue 10, pp. 1255-1260 (2019)Â