Polarization modulation in quantum-dot spin-VCSELs for ultrafast data transmission

Tselios, Christos and Georgiou, Panagiotis and Politi, Christina and Hurtado, Antonio and Alexandropoulos, Dimitris (2023) Polarization modulation in quantum-dot spin-VCSELs for ultrafast data transmission. IEEE Journal of Quantum Electronics, 59 (5). pp. 1-8. 2400308. ISSN 0018-9197 (https://doi.org/10.1109/jqe.2023.3296732)

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Abstract

Spin-Vertical Cavity Surface Emitting Lasers (spin-VCSELs) are undergoing increasing research effort for new paradigms in high-speed optical communications and photon-enabled computing. To date research in spin-VCSELs has mostly focused on Quantum-Well (QW) devices. However, novel Quantum-Dot (QD) spin-VCSELs, offer enhanced parameter controls permitting the effective, dynamical and ultrafast manipulation of their light emission's polarization. In the present contribution we investigate theoretically in detail the operation of QD spin-VCSELs subject to polarization modulation for their use as ultrafast light sources in optical communication systems. We reveal that QD spin-VCSELs outperform their QW counterparts in terms of modulation efficiency, yielding a nearly two- fold improvement. We also analyse the impact of key device parameters in QD spin-VCSELs (e.g. photon decay rate and intra-dot relaxation rate) on the large signal modulation performance with regard to simulated optical modulation amplitude and eye-diagram opening penalty. We show that in addition to exhibiting enhanced polarization modulation performance for data rates up to $250Gb/s$ , QD spin-VCSELs enable operation in dual (ground and excited state) emission thus allowing future exciting routes for multiplexing of information in computing and processing applications.

  • Item type:Article
    ID code:86534
    Dates:
    Date
    Event
    31 October 2023
    Published
    19 July 2023
    Published Online
    30 June 2023
    Accepted
    Notes:© 2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Science > Physics
    Department:Faculty of Science > Physics > Institute of Photonics
    Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:18 Aug 2023 08:55
    Last modified:29 Apr 2024 18:44
    URI:https://strathprints.strath.ac.uk/id/eprint/86534
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