Intrinsic Modulation Response and Electrical Parasitics in Oxide-confined Vertical-Cavity Surface-Emitting Lasers Based on Single or Multiple Apertures

IF 0.8 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Electronics Letters Pub Date : 2025-04-02 DOI:10.1049/ell2.70234

Nikolay N. Ledentsov, Nikolay Ledentsov Jr., Łukasz Chorchos, Oleg Yu. Makarov, Vitaly A. Shchukin, Vladimir P. Kalosha, Ilya E. Titkov, Jaroslaw Turkiewicz

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Abstract

Small aperture (∼2 µm) oxide-confined single-mode (SM) Vertical-Cavity Surface-Emitting Lasers (VCSELs) are capable of intrinsic optical modulation bandwidth above 42 GHz at low currents (∼2 mA). The measured optical bandwidth is limited to ∼36-38 GHz by the VCSEL resistance and capacitance (RC parasitics). To match requirements for industrial VCSELs, we applied a single mesa multi-aperture (MA) single-mode (SM) VCSEL design. The design is based on 4 diamond-shaped apertures at ∼10 µm pitch and an effective diameter of a single aperture of ∼1.7-2 µm. Higher capacitance of the large VCSEL mesa is compensated by a reduced resistance (50Ω) of the device, allowing optical bandwidth f_-3dBo ∼32 GHz. The intrinsic optical bandwidth f_-3dBo of ∼45 GHz is extracted. MA SM VCSEL allows narrow spectral width and error-free 50-Gbaud data transmission over 200 m OM5 multimode fibre (MMF).

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单孔或多孔氧化约束垂直腔面发射激光器的本征调制响应和电寄生特性

小孔径（~ 2 μ m）氧化物约束单模垂直腔表面发射激光器（VCSELs）在低电流（~ 2 mA）下具有42 GHz以上的固有光调制带宽。测量的光带宽被VCSEL电阻和电容（RC寄生）限制在~ 36-38 GHz。为了满足工业VCSEL的要求，我们采用了单台面多孔径（MA）单模VCSEL设计。该设计基于4个直径为~ 10 μ m的菱形孔径，单个孔径的有效直径为~ 1.7-2 μ m。大型VCSEL平台的高电容由器件的降低电阻（50Ω）补偿，允许光带宽为f-3dBo ~ 32 GHz。提取了~ 45 GHz的本征光带宽f-3dBo。MA SM VCSEL允许在200米OM5多模光纤（MMF）上窄频谱宽度和无错误50 gbaud数据传输。

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来源期刊

Electronics Letters 工程技术-工程：电子与电气

CiteScore

2.70

自引率

0.00%

发文量

268

审稿时长

3.6 months

期刊介绍： Electronics Letters is an internationally renowned peer-reviewed rapid-communication journal that publishes short original research papers every two weeks. Its broad and interdisciplinary scope covers the latest developments in all electronic engineering related fields including communication, biomedical, optical and device technologies. Electronics Letters also provides further insight into some of the latest developments through special features and interviews. Scope As a journal at the forefront of its field, Electronics Letters publishes papers covering all themes of electronic and electrical engineering. The major themes of the journal are listed below. Antennas and Propagation Biomedical and Bioinspired Technologies, Signal Processing and Applications Control Engineering Electromagnetism: Theory, Materials and Devices Electronic Circuits and Systems Image, Video and Vision Processing and Applications Information, Computing and Communications Instrumentation and Measurement Microwave Technology Optical Communications Photonics and Opto-Electronics Power Electronics, Energy and Sustainability Radar, Sonar and Navigation Semiconductor Technology Signal Processing MIMO