Demonstration of a three-active-section DFB laser with photon-photon resonance and detuned loading effects to obtain enhanced bandwidth and maintained high output power

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2024-11-24 DOI:10.1016/j.optlastec.2024.112127

Xiang Ma , Hefei Qi , Yuedi Ding , Boyuan Liu , Wenqi Yu , Shaobo Li , Weihua Guo

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引用次数: 0

Abstract

Enhancement of the modulation bandwidth of the directly modulated semiconductor laser has attracted tremendous attention for applications in optical fiber communication and optical interconnects. However, modulation bandwidth is enhanced by some special technology such as integrating the active region or passive region regularly, which lead to low power and complex fabrication. Here we design and demonstrate a monolithic integrated three-active-section distributed feedback (TAS-DFB) laser with enhanced bandwidth theoretically and experimentally. The laser includes three sections: the DFB section, feedback section and active phase section. The three sections share the same multiple quantum-well structure. To enhance the modulation bandwidth beyond the intrinsic modulation bandwidth, both photon-photon resonance (PPR) and detuned loading (DL) effects are utilized to achieve over 55 GHz. The active phase section shows promise in achieving high bandwidth with PPR and relatively high output power of ∼ 10 mW at 25 °C under continuous-wave (CW) operation simultaneously. The fabrication process of the TAS-DFB laser is simplified due to the conventional and identical active layer structure.

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演示具有光子-光子共振和失谐加载效应的三有源截面 DFB 激光器，以获得更高带宽并保持高输出功率

提高直接调制半导体激光器的调制带宽在光纤通信和光互连领域的应用引起了极大关注。然而，调制带宽的增强需要采用一些特殊技术，如将有源区或无源区有规律地集成在一起，从而导致低功耗和复杂的制造工艺。在此，我们设计并演示了一种具有更高带宽的单片集成三有源段分布式反馈（TAS-DFB）激光器，并对其进行了理论和实验验证。该激光器包括三个部分：DFB 部分、反馈部分和有源相位部分。这三个部分共享相同的多量子阱结构。为了提高调制带宽，使其超过固有调制带宽，利用了光子光子共振（PPR）和失谐加载（DL）效应，从而实现了超过 55 GHz 的调制带宽。有源相位部分显示出利用 PPR 实现高带宽的前景，同时在连续波（CW）工作条件下，在 25 °C 温度下可实现 ∼ 10 mW 的相对较高输出功率。由于采用了传统的相同有源层结构，TAS-DFB 激光器的制造工艺得以简化。

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems