Open AccessElimination of odd and even intermodulation distortions of analog microwave photonics link based on GaAs MZMs
Author(s) -
Shemsi Shaqiri,
Shyqyri Haxha,
Taimur N Mirza
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.394461
Subject(s) - intermodulation , photonics , optics , physics , spurious free dynamic range , optical link , dynamic range , electronic engineering , optoelectronics , telecommunications , computer science , engineering , optical fiber , amplifier , cmos
In this paper, a high linear Analogue Microwave Photonic Link (AMPL) is proposed and experimentally demonstrated by unique ways of deploying Gallium Arsenide (GaAs), two Electro-optic Mach-Zehnder Modulators (MZMs), and Balanced Photo detector (BPD). All even and odd intermodulation distortions products are suppressed under noise floor. Second Order Harmonics (SOH) are also significantly suppressed by careful arrangements of microwave shifters and MZMs. The proposed configuration of AMPL is a single-side band. We have also developed and implemented a full mathematical model for proposed configuration, and linearization of the system is tested by introducing an additional RF signal. Our experimental measurements exhibit the suppression under the noise floor of all even and odd IMD and significant suppression of SOH. Spurious Free Dynamic Range (SFDR) of the proposed analogue photonic link for a linearized signal is 119.5 dB.Hz 2/3 . The proposed novel AMPL would have a great impact on future aerospace, defense and satellite-to-ground downlink communication systems applications.