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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 11 — Jun. 2, 2014
  • pp: 12799–12807

Improved 8-channel silicon mode demultiplexer with grating polarizers

Jian Wang, Pengxin Chen, Sitao Chen, Yaocheng Shi, and Daoxin Dai  »View Author Affiliations


Optics Express, Vol. 22, Issue 11, pp. 12799-12807 (2014)
http://dx.doi.org/10.1364/OE.22.012799


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Abstract

An improved 8-channel silicon mode demultiplexer is realized with TE-type and TM-type grating polarizers at the output ends, and these gratings serve as fiber-chip couplers simultaneously. The present 8-channel silicon mode demultiplexer includes a three-waveguide PBS (for separating the TE0 and TM0 modes) and six cascaded ADCs (for demultiplexing the high-order modes of both polarizations). The grating polarizers with high extinction ratios are used to filter out the polarization crosstalk in the 8-channel hybrid multiplexer efficiently and the measured crosstalk for all the mode-channels of the improved 8-channel mode multiplexer is reduced greatly to ~−20dB in a ~100nm bandwidth.

© 2014 Optical Society of America

OCIS Codes
(030.4070) Coherence and statistical optics : Modes
(060.4230) Fiber optics and optical communications : Multiplexing
(130.3120) Integrated optics : Integrated optics devices
(230.5440) Optical devices : Polarization-selective devices

ToC Category:
Integrated Optics

History
Original Manuscript: March 18, 2014
Revised Manuscript: May 6, 2014
Manuscript Accepted: May 11, 2014
Published: May 19, 2014

Citation
Jian Wang, Pengxin Chen, Sitao Chen, Yaocheng Shi, and Daoxin Dai, "Improved 8-channel silicon mode demultiplexer with grating polarizers," Opt. Express 22, 12799-12807 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-11-12799


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