Ultrashort Polarization Splitter Using Two-Mode Interference in Silicon Photonic Wires

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An ultrashort polarization splitter based on the zero-gap directional coupler is proposed and realized. Its interference section is 8.8 mu m long. It is also shown that the length of the interference section can be reduced to about 2.1 mu m. The crosstalk for both transverse-electric (TE) and transverse-magnetic (TM) polarizations is 16 dB at a wavelength of 1.55 mu m. The extinction ratios of TE and TM polarizations are 18.2 and 13.7 dB, respec_ tively. The device has 3-dB bandwidth of 43 mn in TE polarization and 50 nm in TM polarization with the center wavelength at 1.55 mu m.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2009-04
Language
English
Article Type
Article
Citation

IEEE PHOTONICS TECHNOLOGY LETTERS, v.21, no.7, pp.432 - 434

ISSN
1041-1135
DOI
10.1109/LPT.2009.2013638
URI
http://hdl.handle.net/10203/95488
Appears in Collection
EE-Journal Papers(저널논문)
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