8-Channel duplex tunable cascaded DFB laser array based on REC technique

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-04-10 DOI:10.1016/j.optcom.2025.131862

Jingwei Meng , Zijiang Yang , Zhenzhen Xu , Jihong Xu , Jie Zeng , Pan Dai , Zhenxing Sun , Xiangfei Chen , Hui Liu

引用次数: 0

Abstract

In this paper, we propose a duplex tunable cascaded DFB laser array (TCDLA) with 8-channel. Due to the duplex DFB sections, the total length of the chip is greatly shortened. A long linearly chirped Bragg grating is introduced in the laser cavity to reduce the grating interference between different adjacent unit lasers. Moreover, multiple equivalent π phase shifts (π-EPS) are designed to improve the mode stability. The designed channel spacing of laser array is 100 GHz, and the reconstruction-equivalent-chirp (REC) technique is used to provide high-precision control of the grating phase. Through the fine-tuning of the injection current, the output of 8-channel tunable laser array is realized by 6 EPSs, and the SMSRs are all greater than 43 dB.

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基于REC技术的8通道双工可调谐级联DFB激光阵列

本文提出了一种8通道双工可调谐级联DFB激光阵列（TCDLA）。由于双工DFB部分，芯片的总长度大大缩短。在激光腔中引入长线性啁啾布拉格光栅，以减少相邻单元激光器之间的光栅干扰。此外，还设计了多个等效π相移（π- eps）来提高模式稳定性。设计的激光阵列通道间距为100 GHz，采用重构等效啁啾（REC）技术实现光栅相位的高精度控制。通过对注入电流的微调，通过6个eps实现8通道可调谐激光阵列的输出，smsr均大于43 dB。

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

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.