Advanced Optical Imaging Technologies

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Digital inline holography paves the way to reconstruct three-dimensional object fields by recording the interference between an object wave and a reference wave. Captured interference pattern contains the information about the object and it is obtained by performing numerical calculations. Inline setups suffer from st…

This study proposes five lightweight image SuperResolution (SR) architectures, Restormer, SwinIR, HINet, and two hybrid ensemble models (Hybrid-1 and Hybrid-2), to restore heavily compressed JPEG images. The proposed Hybrid-2 model achieves state-of-the-art performance on the LIVE1 dataset with only 41,347 parameters,…

We recast fabrication-compatible photonic inverse design as an unconstrained optimization problem on a learned low-dimensional manifold, intrinsically eliminating design-rule violations. A deep generative network is used to simultaneously enforce minimum feature size, binary material composition in an SOI platform, an…

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Optical systems that rely on precise phase modulation commonly use LiquidCrystal on Silicon (LCoS) Spatial Light Modulators (SLMs), and the optical fidelity ofapplications such as beam shaping, adaptive optics, and holography depends on precise phasecalibration. In this work, we compare two primary phase calibration t…

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Off-axis holographic microscopy enables single-shot quantitative phase imaging, but its sensitivity is limited by mixed noise that degrades fringe visibility and biases phase recovery. We compare classical filters (Wiener/median/NLM/BM3D and variance-stabilized variants), a supervised Swin transformer, and a diffusion…

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Digital holography enables capturing three-dimensional images from imaging methods but is often hindered by significant noise and interference artifacts. In this work, we propose a deep learning-based denoising method for inline holograms that leverages a hybrid CNN-Transformer U-Net architecture with multi-step Trans…

The demand for efficient, scalable, and high-capacity interconnects has surged in the rapidly evolving landscape of data center networks. While the current optical interconnect technologies offer benefits over electrical interconnects, they fall short in the scalability of the port count in a functionalized way, a cru…