Fabrication of optical coherence tomography (OCT) fiber probes in cardiology involves sequentially splicing and cleaving multiple fibers to form a lens. During this process, the splice location-normally invisible under standard illumination-must be identified with micron-level accuracy. This paper presents an approach for splice detection using digital lensless microscopy, which is well-suited for deployment within the restricted space constraints typically found in fiber-fabrication setups. The optical setup incorporates a movable Ronchi grating that simultaneously acts as a beam splitter and a phase modulator. This design enables spatial separation of the reference and object beams while preserving the inherent stability of common-path interferometry. The acquired hologram set is processed using the continuous phase-shifting technique, which is known for its robustness against phase-shifting errors. The theoretical foundations for recording such holograms have been developed, and the conditions under which background noise and the conjugate order are suppressed have been identified. Experiments demonstrated the acquisition of high-contrast quantitative phase images of fiber splices with a spatial resolution down to 1 $μm$.
Compressed Sensing with off-axis frequency-shifting holography
Institut Pasteur, Unité d'Analyse d'Images Quantitative, CNRS URA 2582（巴斯德研究所，定量图像分析单元，法国国家科学研究中心 URA 2582）；CNRS UMR 7587, INSERM U 979, UPMC, UP7, Fondation Pierre-Gilles de Gennes（法国国家科学研究中心 UMR 7587，法国国家健康与医学研究院 U 979，巴黎第六大学，UP7，皮埃尔-吉勒·德·热纳基金会）；Institut Télécom, Télécom ParisTech, CNRS LTCI（巴黎电信学院，巴黎电信，法国国家科学研究中心 LTCI）
Topological photonic cavities based on dissimilar Bragg gratings
Universidad de Málaga（马拉加大学）；CNRS, Université Paris-Saclay（法国国家科学研究中心，巴黎萨克雷大学）；Adelaide University（阿德莱德大学）；National Research Council Canada（加拿大国家研究委员会）
Oblique Bragg-Doppler scattering at relativistic grating created by backward Raman amplification in hydrogen
Russell Centre for Advanced Lightwave Science, Shanghai Institute of Optics and Fine Mechanics and Hangzhou Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (CAS)（中国科学院上海光学精密机械研究所杭州分院）；University of Chinese Academy of Sciences（中国科学院大学）；Zhejiang Key Laboratory of Microstructured Specialty Optical Fiber, Hangzhou Institute of Optics and Fine Mechanics（浙江省微结构特种光纤重点实验室，中国科学院上海光学精密机械研究所杭州分院）
Tunability of the reflection and the transmission spectra of two periodically corrugated metallic plates, obtained by control of the interactions between plasmonic and photonic modes
Noise resilient real-time phase imaging via undetected light
Friedrich Schiller University Jena（耶拿弗里德里希·席勒大学）；Fraunhofer Institute for Applied Optics and Precision Engineering IOF（弗劳恩霍夫应用光学和精密工程研究所）；Cluster of Excellence Balance of the Microverse, Friedrich Schiller University Jena（耶拿弗里德里希·席勒大学微观世界平衡卓越集群）；Institute for Applied Physics, Technical University of Darmstadt（达姆施塔特工业大学应用物理研究所）
