2026-10-07T07:03:38Z https://api.figshare.com/v2/oai

oai:figshare.com:article/33960367 2026-09-22T02:15:53Z category_26401 item_type_3 month_year_09_2026

Design and optimization of an inverse-designed mid-infrared 1​×6 coarse wavelength-division multiplexer Hongrui Deng (25082260) Optical fibre communication systems and technologies Inverse design Photonic integrated Circuits Silicon-on-insulator wavelength demultiplexer <p dir="ltr">In photonic integrated circuits for on-chip optical communications, compact wavelength-division multiplexers/demultiplexers with high integration density are indispensable functional components. Inverse design methods have been demonstrated significant advantages in reducing photonic device footprints and enabling highly compact device architectures. However, when applied to wavelength-division multiplexers, inverse-design approaches still face several limitations, including relatively high insertion loss and a limited number of wavelength channels. In this work, an inverse-design approach is employed to develop a low-loss coarse wavelength-division multiplexer. The proposed device is implemented on a silicon-on-insulator platform and operates in the mid-infrared spectral regions. It supports six wavelength channels within an ultra-compact footprint of approximately 13.5×7.2 µm². Simulation results demonstrate that the insertion loss of all output channels is below 2 dB, while the crosstalk between individual channels is better than -11 dB.</p> 2026-09-22T02:15:53Z Dataset Dataset 10.6084/m9.figshare.33960367.v1 https://figshare.com/articles/dataset/Design_and_optimization_of_an_inverse-designed_mid-infrared_1_6_coarse_wavelength-division_multiplexer/33960367 CC BY 4.0