An inversely designed integrated spectrometer with reconfigurable performance and ultra-low power consumption

• DOI: 10.29026/oea.2024.240099
• Publication Date: 2024-07-17T09:04:19Z
• Authors: Ang Li; ; Yifan Wu; Chang Wang; Feixia Bao; Zongyin Yang; Shilong Pan
• Keywords: Ultra low power; Consumption

Despite the pressing demand for integrated spectrometers, a solution that deliver high-performance while being practically operated is still missing. Furthermore, current spectrometers lack reconfigurability in their performance, which highly desirable dynamic working scenarios. This study presents viable by demonstrating user-friendly, reconfigurable spectrometer on silicon. At core of this innovative programmable photonic circuit capable exhibiting diverse spectral responses, can be significantly adjusted using on-chip phase shifters. The distinguishing feature our lies its inverse design approach, facilitating effortless control and efficient manipulation circuit. By eliminating need intricate configuration, reduces power consumption mitigates complexity. Additionally, offers two distinct operating conditions. In Ultra-High-Performance mode, it activated multiple phase-shifters achieves exceptional resolution picometer scale maintaining broad bandwidth. On other hand, Ease-of-Use mode further simplifies logic actuating single-phase shifter. Although provides slightly degraded approximately 0.3 nm, prioritizes ease use well-suited applications where ultra-fine reconstruction not primary requirement.