Title: Multi-Spectral, Low-Mass, High-Resolution Integrated Photonic Land Imaging Technology
Presenting Author: S. J. Ben Yoo
Organization: University of California, Davis
Co-Authors: Guangyao Liu, Tiehui Su, Kuanping Shang, Jaeyi Chun, Weicheng Lai

Abstract:
We discuss design, fabrication, and experimental demonstrations of a new land imaging system consisting of photonic integrated circuits (PICs). The PIC is capable of conducting interferometric imaging with twelve baselines near 1100-1600 nm. The PIC consists of twelve waveguide pairs with on-chip-spectrometers so that spectrally resolved interferometric imaging is possible on eighteen spectral bins. The PIC consists of twelve waveguide pairs, each leading to a multi-mode interferometer (MMI) that forms broadband interference fringes or each corresponding pair of the waveguides. Then an 18 channel arrayed waveguide grating (AWG) separates the combined signal into 18 signals of different wavelengths. A total of 103 sets of fringes are collected by the detector array at the output of the PIC. An imaging testbed studies utilized the PIC for two-dimensional complex visibility measurements with various targets. Future land imaging system consisting of many such PICs can potentially achieve very high resolution imaging with orders of magnitude smaller size weight and power (SWaP) compared to the standard panchromatic imagers.