"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Generation of 103 ultra-flat broadband optical frequency comb lines using cascaded amplitude modulator and single drive Mach-Zehnder modulators

K. JEYAPIRIYA1,* , M. BASKARAN1,*

Affiliation

  1. Sri Sairam Engineering College, Chennai, India

Abstract

This paper presents the method of generation of ultra-flat broadband optical frequency comb using an Amplitude modulator (AM) and two Single Drive Mach-Zehnder modulators (SD-MZM) in cascade. Modulating signal of 30 GHz frequency is fed to the modulators with the carrier signal of 193.1THz. The modulated signal from the AM is directly fed to one SD-MZM. The AM output is also frequency shifted by 5GHz and fed to another SD-MZM. Both the SD-MZMs are designed with an extinction ratio of 30 dB and a symmetry factor of 0.955. This results in the production of 103 spectral lines with power ripple between each spectral tone to be less than 1 dB. While comparing with previous techniques, this simple cascaded configuration gives 103 ultra-flat spectral tones with a frequency repetition rate of 12 GHz. Each carrier generated from this method can act as a source for Wavelength Division Multiplexing – Passive Optical Networks (WDM-PON). This resolves the need for the broadband capability for the next generation network..

Keywords

Single drive Mach-Zehnder modulator, Extinction ratio, Symmetry factor, WDM-PON.

Submitted at: June 27, 2024
Accepted at: Oct. 7, 2024

Citation

K. JEYAPIRIYA, M. BASKARAN, Generation of 103 ultra-flat broadband optical frequency comb lines using cascaded amplitude modulator and single drive Mach-Zehnder modulators, Journal of Optoelectronics and Advanced Materials Vol. 26, Iss. 9-10, pp. 368-375 (2024)