Paper Info
Title
A novel scheme to suppress the third-order intermodulation distortion based on dual-parallel Mach–Zehnder modulator
Abstract
A scheme to enlarge the spurious free dynamic range (SFDR) of the microwave photonic link is proposed based on a dual-parallel Mach–Zehnder modulator (DPMZM). By properly adjusting the phase of the RF signals and the bias voltages of the DPMZM, the second-order spurious components in the optical carrier band (OCB) of the two sub-MZMs can be canceled out completely, and the third-order and fifth-order spurious components in the first-order upper sideband (1-USB) produced by one sub-MZM have equal amplitude but (180{^{circ }}) phase difference with the other sub-MZM. Therefore, as the two optical beams are combined at the output of the DPMZM and the OCB and the 1-USB are abstracted by a bandpass filter to generate the transmitted signal, all the major optical spurious components that contribute to the third-order intermodulation distortion (IMD3) are canceled out. Theoretical analysis and simulation results show that the proposed scheme, without digital linearization and other optical processor, can suppress IMD3 approximately 30 dB and improve the SFDR by (18~hbox {dB},hbox {Hz}^{2/3}) compared with the conventional quadrature biased MZM system.
Year
DOI
Venue
2018
https://doi.org/10.1007/s11107-018-0765-9
Photonic Network Communications
Keywords
Field
DocType
Dual-parallel Mach–Zehnder modulator (DPMZM),Third-order intermodulation distortion (IMD3),Modulator linearization,Spurious free dynamic range (SFDR)
Sideband,Band-pass filter,Computer science,IMD3,Optical Carrier transmission rates,Optics,Spurious-free dynamic range,Modulation,Intermodulation,Electro-optic modulator,Distributed computing
Journal
Volume
Issue
ISSN
36
1
1387-974X
Citations 
PageRank 
References 
0
0.34
0
Authors
3
Name
Order
Citations
PageRank
Wen Liu18619.59
Jianxin Ma213.07
Junyi Zhang300.68