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Ultra-Compact Subwavelength-Grating-Assisted Polarization-Independent Directional Coupler
- Source :
- IEEE Photonics Technology Letters. 31:1538-1541
- Publication Year :
- 2019
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2019.
-
Abstract
- We propose and experimentally demonstrate an ultra-compact, low-loss polarization-independent directional coupler on the silicon-on-insulator (SOI) platform. By exploiting subwavelength gratings in the directional coupler, the coupling strength could be made equal for both transverse-electric and transverse-magnetic polarizations. The demonstrated polarization-independent directional coupler has a device length of only 4.5 μm and achieves complete cross-coupling with a low excess loss of
- Subjects :
- Materials science
Fabrication
Coupling strength
business.industry
Bandwidth (signal processing)
Physics::Optics
Silicon on insulator
Grating
Polarization (waves)
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
Optoelectronics
Power dividers and directional couplers
Electrical and Electronic Engineering
business
Subjects
Details
- ISSN :
- 19410174 and 10411135
- Volume :
- 31
- Database :
- OpenAIRE
- Journal :
- IEEE Photonics Technology Letters
- Accession number :
- edsair.doi...........b6b5981f5cfe2d55cae969452075438b