Realization of an ultra-compact polarization beam splitter using asymmetric MMI based on silicon nitride / silicon-on-insulator platform.
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A compact polarization beam splitter (PBS) based on the silicon nitride/silicon-on-insulator platform using the recently proposed augmented-low-index-guiding (ALIG) waveguide structure is experimentally demonstrated.Abstract:
We have experimentally demonstrated a compact polarization beam splitter (PBS) based on the silicon nitride/silicon-on-insulator platform using the recently proposed augmented-low-index-guiding (ALIG) waveguide structure. The two orthogonal polarizations are split in an asymmetric multimode interference (MMI) section, which was 1.6 μm wide and 4.8 μm long. The device works well over the entire C-band wavelength range and has a measured low insertion loss of less than 1 dB. The polarization extinction ratio at the Bar Port is approximately 17 dB and at the Cross Port is approximately 25 dB. The design of the device is robust and has a good fabrication tolerance.read more
Citations
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References
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LB Soldano,E.C.M. Pennings +1 more
TL;DR: The underlying self-imaging principle in multimode waveguides is described using a guided mode propagation analysis and it is shown that multimode interference couplers offer superior performance, excellent tolerance to polarization and wavelength variations, and relaxed fabrication requirements when compared to alternatives such as directional coupling.
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Passive technologies for future large-scale photonic integrated circuits on silicon: polarization handling, light non-reciprocity and loss reduction
TL;DR: Dai et al. as mentioned in this paper presented a novel concept for realizing a polarization splitter-rotator with a very simple fabrication process, which could allow large-scale photonic integrated circuits to be built on silicon substrates.
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Ultrasmall polarization splitter based on silicon wire waveguides
Hiroshi Fukuda,Koji Yamada,Tai Tsuchizawa,Toshifumi Watanabe,Hiroyuki Shinojima,Seiichi Itabashi +5 more
TL;DR: This work describes an ultrasmall polarization splitter based on a simple directional coupler consisting of silicon wire waveguides that represents a first step towards accomplishing an Ultrasmall optical circuit with polarization diversity based on silicon wireWaveguides.
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Novel ultra-short and ultra-broadband polarization beam splitter based on a bent directional coupler.
Daoxin Dai,John E. Bowers +1 more
TL;DR: A novel ultra-short polarization beam splitter (PBS) based on a bent directional coupler is proposed by utilizing the evanescent coupling between two bent optical waveguides with different core widths.
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