研究目的
To propose a new method for generating the mmw OVSB signal using two parallel DD-MZMs to overcome power fading caused by chromatic dispersion in RoF systems.
研究成果
The proposed OVSB modulation scheme using two parallel DD-MZMs shows smaller RF signal power fluctuations compared to ODSB and OSSB schemes. It performs better in overcoming chromatic dispersion effects in RoF systems.
研究不足
The study focuses on simulation results and does not provide experimental validation. The impact of real-world factors like noise and nonlinearities on the system performance is not fully explored.
1：Experimental Design and Method Selection:
The study proposes a method using two parallel DD-MZMs to generate OVSB signals. One DD-MZM is configured to produce OSSB modulation, and the other is configured to produce unequal sideband mmw when combined with the first DD-MZM's output.
2：Sample Selection and Data Sources:
The study uses a simulation setup with a laser diode, two DD-MZMs, a power-splitter, and a power-combiner to generate and analyze the OVSB signal.
3：List of Experimental Equipment and Materials:
Includes a laser diode, two DD-MZMs, power-splitter, power-combiner, and PIN photodiode.
4：Experimental Procedures and Operational Workflow:
The light wave from the laser diode is divided into two arms, each modulated by a DD-MZM with specific parameters, and then combined to produce the OVSB signal.
5：Data Analysis Methods:
The performance is verified using 'OptiSystem' software, analyzing the optical signal spectrum and the effect of modulation index on sidebands.
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