Transmission of 100 Gb/s PAM4 Data Using a Low Cost Directly Modulated DFB Laser

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

IEEE Photonics Technology Letters Pub Date : 2025-08-20 DOI:10.1109/LPT.2025.3600890

Huan Li;Xinkai Xiong;Daibing Zhou;Dan Lu;Lingjuan Zhao;Song Liang

引用次数: 0

Abstract

In this letter, we report transmissions of 100 Gb/s PAM4 data using a low-cost high bandwidth directly modulated

$1.3~\mu $

m distributed feedback (DFB) laser. In the device, a passive distributed Bragg reflector (DBR) section is integrated, which leads to a 29 GHz modulation bandwidth at

$20~^{\circ }$

C. The DFB and DBR sections of the device have the same InGaAlAs multi-quantum wells (MQWs). This simplifies the device fabrication process notably, which is similar to a conventional DFB laser. At

$20~^{\circ }$

C, the threshold current of the device is 14 mA and the maximum optical power for the laser is larger than 16 mW. At 100 Gb/s PAM4 data modulation, clear eye diagrams have been obtained for back-to-back and up to 40 km single mode fiber transmissions.

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低成本直调DFB激光器传输100gb /s PAM4数据

在本文中，我们报告了使用低成本高带宽直接调制的1.3~\mu $ m分布式反馈（DFB）激光器传输100gb /s PAM4数据。在器件中，集成了无源分布式布拉格反射器（DBR）部分，该部分在$20~^{\circ}$ c处获得了29ghz调制带宽。器件的DBR部分和DBR部分具有相同的InGaAlAs多量子阱（mqw）。这大大简化了器件的制造过程，类似于传统的DFB激光器。在$20~^{\circ}$ C时，器件的阈值电流为14 mA，激光器的最大光功率大于16 mW。在100gb /s的PAM4数据调制下，获得了背靠背和长达40公里的单模光纤传输的清晰眼图。

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.