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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 22 — Nov. 4, 2013
  • pp: 25727–25733

Silicon based polarization insensitive filter for WDM-PDM signal processing

Yaguang Qin, Yu Yu, Jinghui Zou, Mengyuan Ye, Lei Xiang, and Xinliang Zhang  »View Author Affiliations

Optics Express, Vol. 21, Issue 22, pp. 25727-25733 (2013)

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We propose and fabricate a novel circuit that combines two two-dimensional (2D) grating couplers and a microring resonator (MRR). According to the polarization states, one 2D grating coupler first splits the input signals into two orthogonal paths, which co-propagate in the loop and share a common MRR, and then the two paths are combined together by the other 2D grating coupler. The proposed circuit is polarization insensitive and can be used as a polarization insensitive filter. For demonstration, the wavelength division and polarization division multiplexing (WDM-PDM) non return-to-zero differential-phase-shift-keying (NRZ-DPSK) signals can be demodulated successfully. The bit error ratio measurements show an error free operation, reflecting the good performance and the practicability.

© 2013 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(070.4560) Fourier optics and signal processing : Data processing by optical means
(230.1150) Optical devices : All-optical devices

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: August 22, 2013
Revised Manuscript: October 10, 2013
Manuscript Accepted: October 10, 2013
Published: October 21, 2013

Yaguang Qin, Yu Yu, Jinghui Zou, Mengyuan Ye, Lei Xiang, and Xinliang Zhang, "Silicon based polarization insensitive filter for WDM-PDM signal processing," Opt. Express 21, 25727-25733 (2013)

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