Compact and High-Performance Wide-Band Wavelength-Tunable DFB Laser Array Based on REC Technique

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

IEEE Photonics Technology Letters Pub Date : 2025-07-21 DOI:10.1109/LPT.2025.3591373

Yaqiang Fan;Haolin Xia;Jingxuan Zhang;Yuan Lv;Zhenxing Sun;Wei Yuan;Yuechun Shi;Yan Wang;Pengfei Xu;Xiangfei Chen

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Abstract

In this letter, we present a design for an ultra-wideband matrix grating distributed feedback (DFB) laser array. 8 lasers are arranged in parallel, with one laser per waveguide to avoid grating crosstalk and reflections from other lasers. By employing the reconstruction-equivalent-chirp technique, precise wavelength control of all 8 lasers is achieved, with a wavelength deviation of ±0.2 nm. The wavelength current tuning range of a single DFB laser can reach up to 6.3 nm, resulting in a total tuning range of up to 50 nm, with a side-mode suppression ratio exceeding 40 dB. Following amplification by the semiconductor optical amplifier, the laser achieves an output power exceeding 40 mW with a relative intensity noise below −130 dB/Hz. The array demonstrates rapid wavelength switching with a switching time of less than

$450~\mu $

s, highlighting its application potential in optical communication systems and optical sensing systems.

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基于REC技术的紧凑高性能宽带波长可调谐DFB激光阵列

在这篇文章中，我们提出了一种超宽带矩阵光栅分布反馈（DFB）激光阵列的设计。8个激光器平行排列，每个波导有一个激光器，以避免光栅串扰和其他激光器的反射。利用重建等效啁啾技术，实现了对所有8个激光器的精确波长控制，波长偏差为±0.2 nm。单颗DFB激光器的波长电流调谐范围可达6.3 nm，总调谐范围可达50 nm，侧模抑制比超过40 dB。经半导体光放大器放大后，激光器输出功率超过40mw，相对强度噪声低于−130db /Hz。该阵列的波长切换速度快，切换时间小于$450~ $ μ $ s，在光通信系统和光传感系统中具有较大的应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.