Analysis of Optical Single Sideband Modulators for Radio Over Fiber Link with and without Second Order Sidebands

Autor: Pooja Goel, Rahul Kaushik
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Advances in Electrical and Electronic Engineering, Vol 19, Iss 4, Pp 333-340 (2021)
Druh dokumentu: article
ISSN: 1336-1376
1804-3119
DOI: 10.15598/aeee.v19i4.4203
Popis: The analysis of Optical Single Sideband (OSSB) generation with and without second-order sidebands for Radio over Fiber (RoF) is presented. The performance of systems based on hybrid coupler with distinct phase angle and Dual-Parallel Dual-Drive Mach-Zehnder Modulator (DP-DDMZM) is compared using simulation. Impact of parameters like Single-Mode Fiber (SMF) length, Radiofrequency (RF) amplitude, and laser linewidth on Signal-to-Noise Ratio (SNR) has been investigated. It has been observed that eliminating one of the second-order sidebands with 120° hybrid coupler improves peak SNR in comparison to 90° hybrid coupler with both second-order sidebands and DP-DDMZM-based system without second-order sidebands irrespective of Continuous Wave (CW) laser linewidth.
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