NDLI: 2 × 10 Gbit/s quaternary intensity modulation generation using an optical QPSK modulator

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2 × 10 Gbit/s quaternary intensity modulation generation using an optical QPSK modulator

Content Provider	Semantic Scholar
Author	Ibrahim, Selwan K. Bhandare, Suhas Zhang, Hongbin Noé, Reinhold
Copyright Year	2005
Abstract	Two 2x10 Gbit/s quaternary intensity modulation signals (4-IM) can be generated using quadrature amplitude modulation (QAM), with unequal modulation amplitudes in two orthogonal quadratures. Two 10 Gbit/s NRZ ASK signals and a QPSK modulator allow to generate 4-IM with the same bandwidth as an NRZ-ASK signal. Measured sensitivity at a BER of 10-9 and chromatic dispersion (CD) tolerance are -21.2 dBm and ~ +130 ps/nm, respectively. Two duobinary 10 Gbit/s data streams and a QPSK modulator allow to generate a 9-point QAM signal, with the same bandwidth as a duobinary signal. A stub filter with a frequency response dip at 5 GHz was used to generate the duobinary signals. Detected as a 4-IM, this scheme features a sensitivity and a CD tolerance of -21 dBm and ~ +140 ps/nm, respectively. A polarization and phase insensitive direct detection receiver with a single photodiode has been used to detect all generated QAM signals as 4-IM signals.
File Format	PDF HTM / HTML
DOI	10.1117/12.636759
Volume Number	6021
Alternate Webpage(s)	https://ei.uni-paderborn.de/fileadmin/elektrotechnik/fg/ont/docs/auto/publication/210_Gbits_Quaternary_Intensity_Modulation_Generation_using_an_Optical_QPSK_modulator.pdf
Alternate Webpage(s)	http://ont.uni-paderborn.de/fileadmin/ont/publikationen/APOC_2005/6021_44.pdf
Journal	SPIE/OSA/IEEE Asia Communications and Photonics
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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