Electrical Versus Optical Generation of Leader Signals for Downconversion Leader-Follower Optical Coherence Tomography

IF 2.6 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Journal Pub Date : 2026-02-01 Epub Date: 2025-12-22 DOI:10.1109/JPHOT.2025.3646935

Alejandro Martinez Jimenez;Ramona Cernat;Adrian Podoleanu

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Abstract

The paper refers to advancements in the production of en-face optical coherence tomography (OCT) images from different depths in a sample in real time, using Downconversion Leader-Follower optical coherence tomography method. So far, for a sample placed in an interferometer (Follower), all previous Downconversion Leader-Follower reports employed an interferometer (Leader) to determine the depth where the OCT signal is selected from. In this paper, for the first time, the Leader interferometer is replaced by an arbitrary waveform generator, i.e., optical generation of the reference signal to perform downconversion is replaced by electrical synthesis. In this way, en-face images from different depths are presented in real time, without recurring to a second interferometer. Avenues opened by electrical synthesis of signals otherwise provided by interferometers are discussed, with potential to be adopted in signal processing, manipulation and presentation of high-resolution images in orthogonal orientations to serve better diagnosis.

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下变频先导从动器光学相干层析成像先导信号的光电生成

本文介绍了采用下转换前导-从动光学相干层析成像方法在样品不同深度实时生成正面光学相干层析成像（OCT）方面的进展。到目前为止，对于放置在干涉仪（跟随器）中的样品，所有先前的下变频先导-跟随器报告都使用干涉仪（先导器）来确定选择OCT信号的深度。本文首次将Leader干涉仪替换为任意波形发生器，即将参考信号的光产生进行下变频替换为电合成。通过这种方式，不同深度的正面图像可以实时呈现，而无需重复到第二个干涉仪。讨论了由干涉仪提供的电合成信号开辟的途径，具有在正交方向的信号处理、操作和高分辨率图像呈现中采用的潜力，以更好地服务于诊断。

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来源期刊

IEEE Photonics Journal ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

4.50

自引率

8.30%

发文量

489

审稿时长

1.4 months

期刊介绍： Breakthroughs in the generation of light and in its control and utilization have given rise to the field of Photonics, a rapidly expanding area of science and technology with major technological and economic impact. Photonics integrates quantum electronics and optics to accelerate progress in the generation of novel photon sources and in their utilization in emerging applications at the micro and nano scales spanning from the far-infrared/THz to the x-ray region of the electromagnetic spectrum. IEEE Photonics Journal is an online-only journal dedicated to the rapid disclosure of top-quality peer-reviewed research at the forefront of all areas of photonics. Contributions addressing issues ranging from fundamental understanding to emerging technologies and applications are within the scope of the Journal. The Journal includes topics in: Photon sources from far infrared to X-rays, Photonics materials and engineered photonic structures, Integrated optics and optoelectronic, Ultrafast, attosecond, high field and short wavelength photonics, Biophotonics, including DNA photonics, Nanophotonics, Magnetophotonics, Fundamentals of light propagation and interaction; nonlinear effects, Optical data storage, Fiber optics and optical communications devices, systems, and technologies, Micro Opto Electro Mechanical Systems (MOEMS), Microwave photonics, Optical Sensors.