Shortcut to adiabaticity in a silicon polarization splitter rotator using multi-wavelength adiabaticity engineering

Hung Ching Chung, Guan Xun Lu, Shuo Yen Tseng

Research output: Contribution to journalArticlepeer-review

Abstract

We introduce adiabaticity engineering in coupled waveguide devices to achieve shortcuts to adiabaticity in multi-wavelength systems. By engineering the adiabaticity distribution using a single control parameter, we obtain large operating bandwidth in a compact device. Multi-wavelength adiabaticity engineering is applied to the design of silicon polarization splitter-rotators. The total length of the designed polarization splitter-rotator is 141 µm, and simulations show that the device exhibits extinction ratios above 28 dB and 16 dB for the TE0 and TM0 modes, respectively, with a bandwidth of 300 nm (from 1.4 µm to 1.7 µm). The fabrication tolerance of the designed device is also simulated.

Original languageEnglish
Pages (from-to)8115-8125
Number of pages11
JournalOptics Express
Volume30
Issue number5
DOIs
Publication statusPublished - 2022 Feb 28

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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