Reconfigurable optical quadrature amplitude modulation converter/encoder using a tunable complex coefficient optical tapped delay line

Salman Khaleghi; Mohammad Reza Chitgarha; Omer F Yilmaz; Moshe Tur; Michael W Haney; Carsten Langrock; Martin M Fejer; Alan E Willner

doi:10.1364/OL.38.001600

Reconfigurable optical quadrature amplitude modulation converter/encoder using a tunable complex coefficient optical tapped delay line

Opt Lett. 2013 May 15;38(10):1600-2. doi: 10.1364/OL.38.001600.

Authors

Salman Khaleghi¹, Mohammad Reza Chitgarha, Omer F Yilmaz, Moshe Tur, Michael W Haney, Carsten Langrock, Martin M Fejer, Alan E Willner

Affiliation

¹ Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089, USA. khaleghi@usc.edu

PMID: 23938882
DOI: 10.1364/OL.38.001600

Abstract

We experimentally demonstrate a reconfigurable optical converter/encoder for quadrature amplitude modulated (QAM) signals. The system utilizes nonlinear wavelength multicasting, conversion-dispersion delays, and simultaneous nonlinear multiplexing and sampling. We show baud rate tunability (31 and 20 Gbaud) and reconfigurable conversions from lower-order QAM signals to higher-order QAM signals (e.g., 64-QAM).