Temperature-Stabilized 850 nm High-Speed VCSEL With Modulation Bandwidth Over 30 GHz

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

IEEE Photonics Technology Letters Pub Date : 2025-09-08 DOI:10.1109/LPT.2025.3607402

Zhenhuan Qiu;Jian Feng;Wei Miao;Shupeng Deng;Chuyu Zhong;Shihao Ding;Jinlong Lu;Nannan Li;Wu Wang;Hui Li

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引用次数: 0

Abstract

We present an 850 nm vertical-cavity surface- emitting laser (VCSEL) featuring enhanced thermal stability and >30 GHz modulation bandwidth. The device maintains stable performance with bandwidths of 30.30 GHz at 25°C and 30.54 GHz at 55°C under 5 mA bias, showing minimal change. Notably, the bandwidth remains nearly constant across a wide current range (3-7 mA). The VCSEL exhibits excellent signal integrity, with relative intensity noise (RIN) consistently below −140 dB/Hz even at elevated temperatures. Advanced thermal management techniques, including polyimide integration and a double-mesa structure, effectively mitigate thermal impedance increase and carrier dynamics degradation. Furthermore, the device successfully achieves 106 Gbit/s PAM4 transmission, as evidenced by clear eye diagrams. These results demonstrate that our co-optimized thermal and carrier design represents a promising approach for developing robust optoelectronic devices capable of reliable high-temperature operation.

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温度稳定的850纳米高速VCSEL，调制带宽超过30 GHz

我们提出了一种850 nm的垂直腔面发射激光器（VCSEL），具有增强的热稳定性和>30 GHz调制带宽。器件性能稳定，在5 mA偏置下，25℃时带宽为30.30 GHz， 55℃时带宽为30.54 GHz，变化极小。值得注意的是，在宽电流范围内（3-7 mA），带宽几乎保持不变。VCSEL具有出色的信号完整性，即使在高温下，相对强度噪声（RIN）也始终低于- 140 dB/Hz。先进的热管理技术，包括聚酰亚胺集成和双台面结构，有效地缓解了热阻抗增加和载流子动力学退化。此外，该器件成功实现了106 Gbit/s的PAM4传输，并通过清晰的眼图证明了这一点。这些结果表明，我们的共同优化的热和载流子设计代表了一种有前途的方法，可以开发能够可靠高温运行的鲁棒光电子器件。

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.