DOAJ Open Access 2023

Fast Adiabatic Mode Evolution Assisted 2 × 2 Broadband 3 dB Coupler Using Silicon-on-Insulator Fishbone-like Grating Waveguides

Yulong Xue Lingxuan Zhang Yangming Ren Yufang Lei Xiaochen Sun

Abstrak

We report a novel 2 × 2 broadband 3 dB coupler based on fast adiabatic mode evolution with a compact footprint and large bandwidth. The working principle of the coupler is based on the rapid adiabatic evolution of local eigenmodes of fishbone-like grating waveguides. Different from a traditional adiabatic coupling method realized by the slow change of the cross-section size of a strip waveguide, a fishbone waveguide allows faster adiabatic transition with proper structure and segment designs. The presented 3 dB coupler achieves a bandwidth range of 168 nm with an imbalance of no greater than ±0.1 dB only for a 9 μm coupling region which significantly improves existing adiabatic broadband couplers.

Topik & Kata Kunci

Chemistry

Penulis (5)

Yulong Xue

Lingxuan Zhang

Yangming Ren

Yufang Lei

Xiaochen Sun

Format Sitasi

APA MLA BibTeX

Xue, Y., Zhang, L., Ren, Y., Lei, Y., Sun, X. (2023). Fast Adiabatic Mode Evolution Assisted 2 × 2 Broadband 3 dB Coupler Using Silicon-on-Insulator Fishbone-like Grating Waveguides. https://doi.org/10.3390/nano13202776

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Informasi Jurnal

Tahun Terbit: 2023
Sumber Database: DOAJ
DOI: 10.3390/nano13202776
Akses: Open Access ✓