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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 5 — Feb. 27, 2012
  • pp: 5725–5741

High-performance monolithically integrated 120° downconverter with relaxed hardware constraints

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


Optics Express, Vol. 20, Issue 5, pp. 5725-5741 (2012)
http://dx.doi.org/10.1364/OE.20.005725


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Abstract

A coherent receiver based on a 120° downconverter architecture, inherited from previous approaches at the microwave and optical fields, is proposed, analyzed, numerically evaluated and compared to the conventional 90° downconverter alternative. It is shown that, due to its superior calibration procedure, the new downconverter architecture allows full compensation of the imbalances in its optical front-end thus leading to an extended dynamic range and a broader operating bandwidth than its 90° counterpart. Simulation results from monolithically integrated downconverters show that our approach can be an interesting alternative to support efficient modulation schemes such as M-QAM that is being studied as potential candidate for the next generation of optical communication systems.

© 2012 OSA

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:
Fiber Optics and Optical Communications

History
Original Manuscript: December 2, 2011
Revised Manuscript: January 13, 2012
Manuscript Accepted: January 16, 2012
Published: February 24, 2012

Citation
P. J. Reyes-Iglesias, I. Molina-Fernández, A. Moscoso-Mártir, and A. Ortega-Moñux, "High-performance monolithically integrated 120° downconverter with relaxed hardware constraints," Opt. Express 20, 5725-5741 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-5-5725


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