Title :
Universal QAM encoder/converter using fully tunable complex-coefficient optical tapped-delay line
Author :
Khaleghi, Salman ; Chitgarha, Mohammad Reza ; Yilmaz, Omer F. ; Tur, Moshe ; Haney, Michael W. ; Willner, Alan E.
Author_Institution :
Ming Hsieh Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
We experimentally demonstrate a tunable and reconfigurable optical scheme for encoding and converting of QAM symbols. 20/31 Gbaud QPSK signals are encoded/converted to higher order QAMs, including 64-QAM in an all-optical tunable tapped delay line. The OSNR penalty at 2×10-3 BER is measured to be ~2 dB and ~8 dB for conversions of 31 Gbaud BPSK to 15.5 Gbaud QPSK and 31 Gbaud QPSK to 15.5 Gbaud 16-QAM, respectively.
Keywords :
error statistics; optical communication equipment; optical delay lines; optical modulation; optical tuning; quadrature amplitude modulation; BER; BPSK; OSNR penalty; QPSK; all-optical tunable tapped delay line; complex-coefficient optical tapped-delay line; reconfigurable optical scheme; tunable optical scheme; universal QAM encoder/converter; Binary phase shift keying; Multiplexing; Optical fibers; Quadrature amplitude modulation; Signal to noise ratio;
Conference_Titel :
Optical Fiber Communication Conference and Exposition (OFC/NFOEC), 2012 and the National Fiber Optic Engineers Conference
Conference_Location :
Los Angeles, CA
Print_ISBN :
978-1-4673-0262-3
