基于Delta-Sigma调制和频谱拼接的光子任意波形生成

IF 2.5 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-07-24 DOI:10.1109/LPT.2025.3592222

Ao Zeng;Bo Yang;Shuna Yang;Yiran Gao;Hao Chi

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引用次数: 0

摘要

本文介绍了一种利用delta-sigma调制（DSM）和频谱拼接技术产生光子任意波形（PAWG）的新方法。该方法将宽带目标信号分成多个频谱子信号。每个子信号通过DSM处理产生两个1位脉冲序列，使用双驱动Mach-Zehnder调制器（DD-MZM）将其调制到光脉冲序列上。DD-MZM工作方式不同，使脉冲重复频率增加一倍，增强了输出波形的带宽。经过光探测、带通滤波和频谱拼接，可以合成宽带信号。概念验证实验成功地演示了不同格式的啁啾信号的生成，验证了所提出的PAWG方法在宽带信号生成中的有效性和潜力。

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Photonic Arbitrary Waveform Generation Based on Delta-Sigma Modulation and Spectrum Stitching

This Letter introduces a novel approach to photonic arbitrary waveform generation (PAWG) that employs delta-sigma modulation (DSM) and spectrum stitching techniques. The approach divides a wideband target signal into multiple spectral sub-signals. Each sub-signal is processed through DSM to produce two 1-bit pulse sequences, which are modulated onto an optical pulse train using a dual-drive Mach-Zehnder modulator (DD-MZM). The DD-MZM operates differentially to double the pulse repetition rate, enhancing the bandwidth of the output waveform. After photodetection, bandpass filtering, and spectrum stitching, a wideband signal can be synthesized. A proof-of-concept experiment successfully demonstrates the generation of chirp signals with different formats, validating the effectiveness and potential of the proposed PAWG method in wideband signal generation.

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.