Experimental Demonstration of a High Efficiency Polarization Splitter Based on a One-Dimensional Grating With a Bragg Reflector Underneath

A one-dimensional grating serving both as a polarization beam splitter and a vertical coupler for silicon photonic circuits is designed, fabricated, and characterized. Bragg reflectors are employed to improve greatly the coupling efficiency. Over 50% efficiency for both polarizations are achieved ex...

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Bibliographic Details
Published in:IEEE photonics technology letters 2010-11, Vol.22 (21), p.1568-1570
Main Authors: Zhechao Wang, Yongbo Tang, Wosinski, L, Sailing He
Format: Article
Language:English
Subjects:
Bragg reflector
Couplers
Couplings
Electrical engineering, electronics and photonics
Elektroteknik, elektronik och fotonik
grating coupler
Gratings
integrated optics
Optical fiber couplers
Optical fiber polarization
Photonics
polarization splitter
silicon-on-insulator (SOI)
TECHNOLOGY
TEKNIKVETENSKAP
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Summary:A one-dimensional grating serving both as a polarization beam splitter and a vertical coupler for silicon photonic circuits is designed, fabricated, and characterized. Bragg reflectors are employed to improve greatly the coupling efficiency. Over 50% efficiency for both polarizations are achieved experimentally, and the extinction ratio between them is also high ( -20 dB).
ISSN:1041-1135
1941-0174
1941-0174
DOI:10.1109/LPT.2010.2070792