Optical pulse shaping stands as a formidable technique in ultrafast optics, radio-frequency photonics, and quantum communications. While existing systems rely on bulk optics or integrated platforms with planar waveguide sections for spatial dispersion, they face limitations in achieving finer (few- or sub-GHz) spectrum control. These methods either demand considerable space or suffer from pronounced phase errors and optical losses when assembled to achieve fine resolution. Addressing these challenges, we present a foundry-fabricated six-channel silicon photonic shaper using microresonator filter banks with inline phase control and high spectral resolution. Leveraging existing comb-based spectroscopic techniques, we devise a system to mitigate thermal crosstalk and enable the versatile use of our on-chip shaper. Our results demonstrate the shaper’s ability to phase-compensate six comb lines at tunable channel spacings of 3, 4, and 5 GHz. Specifically, at a 3 GHz channel spacing, we showcase the generation of arbitrary waveforms in the time domain. This scalable design and control scheme holds promise in meeting future demands for high-precision spectral shaping capabilities.

光脉冲整形是超快光学、射频光子学和量子通信领域的一项强大技术。虽然现有系统依靠体光学器件或具有平面波导部分的集成平台来实现空间色散，但它们在实现更精细（几GHz或亚GHz）频谱控制方面面临限制。这些方法要么需要相当大的空间，要么在组装以实现精细分辨率时会遭受明显的相位误差和光学损耗。为了解决这些挑战，我们提出了一种铸造厂制造的六通道硅光子整形器，使用具有内联相位控制和高光谱分辨率的微谐振器滤波器组。利用现有的梳状光谱技术，我们设计了一种系统来减轻热串扰并实现片上整形器的多功能使用。我们的结果证明了整形器能够以 3、4 和 5 GHz 的可调通道间隔对 6 个梳状线进行相位补偿。具体来说，在 3 GHz 通道间隔下，我们展示了时域中任意波形的生成。这种可扩展的设计和控制方案有望满足未来对高精度光谱整形功能的需求。