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

Pooja Goel, Rahul Kaushik

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

Číslo: 4/2021
Periodikum: Advances in Electrical and Electronic Engineering
DOI: 10.15598/aeee.v19i4.4203

Klíčová slova: Dual Drive Mach Zehnder Modulator; Dual Parallel Dual Drive Mach Zehnder Modulator; Optical Single Sideband; Radio over Fiber.

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Anotace: 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.