CD Skripsi

Unbalance Sideband Modulation Untuk Mengatasi Dispersion Power Fading Pada Sistem Radio Over Fiber

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ABSTRACT
In the Radio over Fiber (RoF) system, a reduction in received radio frequency (RF) power often occurs due to chromatic dispersion in optical fibers, known as dispersion power fading (DPF). To address this issue, a new technique called Unbalance Sideband Modulation (USM) is proposed. USM is implemented by modulating the optical carrier signal using an RF signal with a single-drive Mach-Zehnder modulator (SD-MZM). The output of the SD-MZM is then combined with an optical signal at a frequency equal to the sum of the optical carrier frequency and the RF signal frequency. Simulations were conducted using OptiSystem software. The RF signal frequency used was 60 GHz with power levels of 0, 5, and 10 dBm. Variations in the RF signal frequency were also tested at 30 GHz and 40 GHz. The results show that, at a modulation index (m) of 1, the calculated DPF level in the RoF system with SD-MZM is 8.1, while in the RoF system with USM, the DPF levels at power levels of 0, 5, and 10 dBm are 1.2, 0.4, and 0.2, respectively. In the simulation results, the DPF level in the RoF system with SD-MZM is 8.6, while in the RoF system with USM, the DPF levels at power levels of 0, 5, and 10 dBm are 0.9, 0.3, and 0.3, respectively. The simulation parameters are more complex, resulting in slight differences between the calculated and simulated DPF levels. The results clearly indicate that the performance of the RoF system with USM improves as the LD2 power increases. The DPF level in the RoF system with USM at a frequency of 30 GHz is 1.2, while at a frequency of 40 GHz, it is 1.0.
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Both model calculations and simulations demonstrate that the Unbalance Sideband Modulation (USM) method effectively reduces dispersion power fading (DPF), providing a viable solution for optical communication systems.
Keywords: unbalance sideband modulation, dispersion power fading, SD-MZM.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1907124872

Penerbit

Pekanbaru : Universitas Riau – F.TEKNIK – Elektro., 2025

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1907124872

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK ELETRO

Info Detail Spesifik

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Pernyataan Tanggungjawab

daus

Versi lain/terkait

Lampiran Berkas

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