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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 20 — Oct. 7, 2013
  • pp: 23048–23057

Colorless monolithically integrated 120° downconverter

P. J. Reyes-Iglesias, A. Ortega-Moñux, and I. Molina-Fernández  »View Author Affiliations

Optics Express, Vol. 21, Issue 20, pp. 23048-23057 (2013)

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We numerically demonstrate colorless reception of dense wavelength division multiplexed channels in the C-band for high-order QAM (16-64 QAM) signals on a 120° monolithically integrated downconverter, based on a 2x3 MMI with calibrated analog IQ recovery. It is shown that the proposed calibrated 120° downconverter can increase up to 80 the number of coincident channels in an efficient way, exhibiting good signal dynamic range and high fabrication yield. As this downconverter makes use of the minimum number of power outputs required for perfect recovery of IQ signals, it becomes an interesting alternative to conventional 90° based downconverters.

© 2013 Optical Society of America

OCIS Codes
(000.4430) General : Numerical approximation and analysis
(060.1660) Fiber optics and optical communications : Coherent communications
(060.2330) Fiber optics and optical communications : Fiber optics communications
(250.3140) Optoelectronics : Integrated optoelectronic circuits
(250.5300) Optoelectronics : Photonic integrated circuits

ToC Category:
Integrated Optics

Original Manuscript: June 10, 2013
Revised Manuscript: July 25, 2013
Manuscript Accepted: September 11, 2013
Published: September 23, 2013

P. J. Reyes-Iglesias, A. Ortega-Moñux, and I. Molina-Fernández, "Colorless monolithically integrated 120° downconverter," Opt. Express 21, 23048-23057 (2013)

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