Mode-Locking and Noise Characteristics of InAs/InP Quantum Dash/Dot Lasers

被引：6
|
作者：
Liu, Guocheng [1 ]
Poole, Philip J. [1 ]
Lu, Zhenguo [1 ]
Liu, Jiaren [1 ]
Song, Chun-Ying [1 ]
Mao, Youxin [1 ]
Barrios, Pedro [1 ]
机构：
[1] Natl Res Council Canada, Adv Elect & Photon Res Ctr, Ottawa, ON K1A 0R6, Canada
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2023年 / 41卷 / 13期
关键词：
Coherent comb lasers; coherent Terabit; s networking systems; integrated optics devices; quantum dash; quantum dot semiconductor mode-locked lasers; LOCKED LASER; FREQUENCY COMB; GENERATION; STABILITY;
D O I：
10.1109/JLT.2023.3244777
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The mode-locking and noise characteristics of InP/InAs quantum dash (QDash) and quantum dot (QDot) multi-wavelength lasers, showing identical structural design, operating at the C-band, are investigated and compared to each other. The QDash lasers exhibit improved repetition frequency stability with a lower threshold current and cavity loss. On the other hand, the QDot lasers show higher quality repetition frequency tunability with higher internal quantum efficiency, as well as lower average integrated relative intensity noise (RIN) and average optical linewidth. Furthermore, we demonstrate both the QDash and QDot lasers exhibit very clean constellation diagrams at 32 GBaud 16QAM base-band signal, while the QDot lasers' bit-error ratio (BER) performance outperforms the QDashes. This finding highlights the viability of InAs/InP QDash/QDot lasers to be used as a low-cost optical source for large-scale networks.
引用
收藏
页码：4262 / 4270
页数：9
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