Compact Polarization-Independent MMI-Based 1 <inline-formula><tex-math notation="LaTeX">$\times$</tex-math></inline-formula> 2 Power Splitter Using Metal-Cap Silicon-on-Insulator Waveguide
A compact polarization-independent multimode interference (MMI)-based 1 <inline-formula><tex-math notation="LaTeX">$\times$</tex-math></inline-formula> 2 power splitter is designed by introducing a metal-cap silicon-on-insulator (SOI) waveguide as the MMI section, a...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2016-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/7466789/ |
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| Summary: | A compact polarization-independent multimode interference (MMI)-based 1 <inline-formula><tex-math notation="LaTeX">$\times$</tex-math></inline-formula> 2 power splitter is designed by introducing a metal-cap silicon-on-insulator (SOI) waveguide as the MMI section, and its polarization and attenuation characteristics are optimized by using a full-vectorial <inline-formula><tex-math notation="LaTeX">$\mathbf{H}$</tex-math></inline-formula>-field finite-element method (FEM). The least square boundary residual method is used to study the propagation process and the dependence of the image quality on the number of modes used. It is shown that a 330-nm-high, 5-<inline-formula><tex-math notation="LaTeX">$\mu\text{m}$</tex-math></inline-formula>-wide, and 24.54-<inline-formula><tex-math notation="LaTeX">$\mu\text{m}$</tex-math></inline-formula>-long MMI section can yield a polarization-independent 1 <inline-formula><tex-math notation="LaTeX">$\times$</tex-math></inline-formula> 2 power splitter with the excess loss of only 0.66 and 0.86 dB for the quasi-transverse electric (TE) and quasi-transverse magnetic (TM) modes, respectively. |
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| ISSN: | 1943-0655 |