Influence of Power Distribution on Performance of Intermodulation Distortion Suppression

A linearized analog photonic link based on a dual parallel Mach-Zehnder modulator (MZM) and an unsymmetrical power divider is proposed and demonstrated. By adjusting power distribution ratio of radio frequency signals, the third-order intermodulation distortion (IMD3) of two submodulators balances e...

Full description

Saved in:
Bibliographic Details
Published inIEEE photonics technology letters Vol. 27; no. 15; pp. 1639 - 1641
Main Authors Liang, Dong, Tan, Qinggui, Jiang, Wei, Zhu, Zhongbo, Li, Xiaojun, Yao, Zhoushi
Format Journal Article
LanguageEnglish
Published IEEE 01.08.2015
Subjects
Analog photonic link
Dual Parallel Mach-Zehnder Modulator
IMD3
linearized
Microwave photonics
Modulation
Optical fibers
Power distribution
Power dividers
unsymmetrical power divider
IMD3
Analog photonic link
unsymmetrical power divider
dual parallel Mach–Zehnder modulator
linearized
Online AccessGet full text

Cover

More Information
Summary:A linearized analog photonic link based on a dual parallel Mach-Zehnder modulator (MZM) and an unsymmetrical power divider is proposed and demonstrated. By adjusting power distribution ratio of radio frequency signals, the third-order intermodulation distortion (IMD3) of two submodulators balances each other. Influence of power distribution ratio on the performance of IMD3 suppression is evaluated in experiment. When the power distribution ratio is 0.1, IMD3 suppression can achieve to ~ 62.1 dB according to the experimental results. Spurious-free dynamic range is improved by 23 dB in a 1-Hz bandwidth comparing with the scheme based on a single MZM. Experiment results are in good agreement with the theoretical analysis.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2015.2433015