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Ultracompact polarization splitter–rotator based on an asymmetric directional coupler |
Applied Optics, Vol. 51, Issue 34, pp. 8257-8261 (2012)
http://dx.doi.org/10.1364/AO.51.008257
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Abstract
An ultracompact polarization splitter–rotator based on an asymmetric directional coupler has been designed and analyzed. The device consists of one channel waveguide and one vertical slot waveguide, which couple to each other to form the asymmetric directional coupler. The coupling length is only 17.4 μm, and the polarization extinction ratio, with its largest value of 18 dB, is more than 15 dB in the operating wavelength range from 1515 to 1560 nm. The TM-to-TE conversion efficiency can reach up to 95% (0.02 dB) at 1550 nm wavelength.
© 2012 Optical Society of America
OCIS Codes
(130.0130) Integrated optics : Integrated optics
(230.0230) Optical devices : Optical devices
ToC Category:
Optical Devices
History
Original Manuscript: September 27, 2012
Revised Manuscript: November 13, 2012
Manuscript Accepted: November 16, 2012
Published: November 30, 2012
Citation
Yonghao Fei, Libin Zhang, Tongtong Cao, Yanmei Cao, and Shaowu Chen, "Ultracompact polarization splitter–rotator based on an asymmetric directional coupler," Appl. Opt. 51, 8257-8261 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-34-8257
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