Non-binary kHz single-pixel imaging with a photonic chip

Single-pixel (SP) imaging and compressive sensing offer several advantages over traditional imaging. These include detection over a broader spectrum, robustness to light scattering, and lower data rates. When paired with low SWaP-C (Size, Weight, Power, and Cost), these benefits make single-pixel imaging a compelling alternative to conventional methods. <br/> <br/> However, the widespread adoption of single-pixel imaging has been hindered by a significant trade-off between image quality and frame rate, while retaining a compelling SWaP-C. <br/> <br/> We have developed a photonic integrated circuit (PIC) for Fourier-basis structured illumination that operates similarly to optical phased arrays, creating interferometric fringe patterns at up to 30 kHz. This refresh rate achieved through thermal-optic modulation offers a significant improvement over LCD and DMD based SP methods. <br/> <br/> The scalability of PICs and advancements in laser hybrid integration are set to realize a commercially viable single-pixel imager with attractive SWaP-C, potentially transforming the imaging and sensing landscape.