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Publication - Dr Krishna Coimbatore Balram

    A Waveguide Integrated GaN Distributed Bragg Reflector Cavity Using Low Cost Nanolithography

    Citation

    Jia, S, Le Boulbar, ED, Balram, KC, Pugh, JR, Wang, T, Allsopp, DW, Shields, PA & Cryan, MJ, 2019, ‘A Waveguide Integrated GaN Distributed Bragg Reflector Cavity Using Low Cost Nanolithography’. Nano-Micro Letters.

    Abstract

    In this paper, we present the design, fabrication and measurement of gallium nitride (GaN) Distributed Bragg Reflector (DBR) cavities integrated with input and output grating couplers. The devices are fabricated using a new, low cost nanolithography technique: Displacement Talbot Lithography (DTL) combined with Direct Laser Writing (DLW) lithography. The finite difference time-domain (FDTD) method has been used to design all the components and measured and modelled results show good agreement. Such devices have applications in GaN integrated photonics and biosensing.

    Full details in the University publications repository