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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 11 — Jun. 2, 2014
  • pp: 13565–13571

Novel ultra-broadband polarization splitter-rotator based on mode-evolution tapers and a mode-sorting asymmetric Y-junction

Jing Wang, Ben Niu, Zhen Sheng, Aimin Wu, Wei Li, Xi Wang, Shichang Zou, Minghao Qi, and Fuwan Gan  »View Author Affiliations


Optics Express, Vol. 22, Issue 11, pp. 13565-13571 (2014)
http://dx.doi.org/10.1364/OE.22.013565


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Abstract

A novel silicon-on-insulator (SOI) polarization splitter-rotator is proposed based on mode-evolution tapers and a mode-sorting asymmetric Y-junction. The tapers are designed to adiabatically convert the input TM0 mode into the TE1 mode, which will evolve into the TE0 mode in the wide output arm while the input TE0 mode excites the TE0 mode in the narrow arm. The numerical simulation results show that the mode conversion efficiency increases with the lengths of the tapers and the Y-junction for the output waveguide widths in a large range. This proposed device has < 0.4 dB insertion loss with > 12 dB extinction ratio in an ultra-broad wavelength range from 1350 nm to 1750 nm. With such a broad operating bandwidth, this device offers potential applications for polarization diversity operating across every communication bands. Fabrication tolerance analysis is also performed in terms of the device width variation, the slab height variation and the variation of the upper-cladding refractive index.

© 2014 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.7370) Optical devices : Waveguides
(130.5440) Integrated optics : Polarization-selective devices

ToC Category:
Integrated Optics

History
Original Manuscript: April 10, 2014
Manuscript Accepted: May 15, 2014
Published: May 29, 2014

Citation
Jing Wang, Ben Niu, Zhen Sheng, Aimin Wu, Wei Li, Xi Wang, Shichang Zou, Minghao Qi, and Fuwan Gan, "Novel ultra-broadband polarization splitter-rotator based on mode-evolution tapers and a mode-sorting asymmetric Y-junction," Opt. Express 22, 13565-13571 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-11-13565


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References

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