A Multi-Tone high Efficient Bandwidth System with an Eliminated Even-order Distortions using Double Dual-parallel Mach-Zehnder Modulator. / Mirza, Taimur; Haxha, Shyqyri; Dayou, Iyad .

In: Results in Optics, Vol. 5, 100190, 12.2021, p. 1-12.

Research output: Contribution to journalArticlepeer-review

E-pub ahead of print

Abstract

In this paper, a linearization of dual RF channels over a single carrier wavelength is proposed and experimentally demonstrated. Multiple microwave signals with a multi-octave bandwidth are modulated by a double dual-parallel Mach-Zehnder modulator (D-DPMZM) and recovered by a differential balanced detector (BPD). The theoretical and experimental model illustrates the elimination of second-order harmonic distortions (SHD) and second-order intermodulation (IMD2), and significant suppression of the third-order intermodulation (IMD3) by controlling the phase of the input RF signal and DPMZM. The proposed photonic link configuration illustrates the modulation of two microwave signals on a single optical carrier wavelength, and each RF channel is tested for Two-tone signals to illustrate the linearization of the channelized analog photonic link (CAPL). Firstly, a mathematical model is presented to illustrate the elimination of optical carrier and even-order distortions by using only single-tone in each RF channel. Secondly, the purity of the system is mathematically and experimentally investigated by introducing two-tones in each RF channel. We have analyzed both test cases, with single-tone and with a two-tone test, to help us understand and compare the performance of the system. For test case 1 and test case 2 of our proposed configuration, we have achieved a fundamental signal-to-interference ratio (S/I) of 60dB and 65dB with a spurious-free dynamic range (SFDR) of 110dB.Hz2/3 and 116dB.Hz2/3, respectively.
Original languageEnglish
Article number100190
Pages (from-to)1-12
Number of pages12
JournalResults in Optics
Volume5
Early online date8 Nov 2021
DOIs
Publication statusE-pub ahead of print - 8 Nov 2021
This open access research output is licenced under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

ID: 43578585