Reversely Modulated Optical Single Sideband Scheme and Its Application in a 60-GHz Full Duplex ROF System

The reversely modulated optical single sideband scheme (IM-OSSB) based on a parallel Mach-Zehnder modulator (P-MZM) is proposed. In this P-MZM, one sub-MZM is employed for data modulation and the other is used for optical millimeter wave (mm-wave) generation. Due to the individual modulation, this s...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 24; no. 10; pp. 827 - 829
Main Authors Cao, Zizheng, Yu, Jianjun, Chen, Lin, Shu, Qinglong
Format Journal Article
LanguageEnglish
Published IEEE 15.05.2012
Subjects
Optical amplifiers
Optical fibers
Optical filters
Optical harmonic generation
Optical modulation
Optical power efficiency improvement
Optical receivers
optical single sideband modulation
radio-over-fiber
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Summary:The reversely modulated optical single sideband scheme (IM-OSSB) based on a parallel Mach-Zehnder modulator (P-MZM) is proposed. In this P-MZM, one sub-MZM is employed for data modulation and the other is used for optical millimeter wave (mm-wave) generation. Due to the individual modulation, this scheme is data-format-transparent and can be used to generate a high performance optical mm-wave signal at the optimized direct current (dc) bias. There is electrical mixer free at the transmitter and thus the bandwidth limitation, nonlinearity and conversion loss from the electrical mixer are released in this scheme. Moreover, the modulation power efficiency of IM-OSSB can be improved by adjusting the dc bias in the modulator. Based on IM-OSSB, we demonstrate a 60-GHz full duplex radio-over-fiber system. The experimental results show that the power penalty of 2.9-Gb/s on-off keying data carried by 58-GHz mm-wave after transmission over 50-km SMF-28 is negligible.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2012.2188853