研究目的
Investigating the performance of direct detection optical OFDM (DDOOFDM) systems with respect to received optical power and various full width half maximum values of the continuous wave laser source.
研究成果
The simulation demonstrates that a 10Gbps DDOOFDM system can effectively operate over a 50km SSMF channel without dispersion compensation, provided the laser source's FWHM value is maintained below 1MHz for optimal performance.
研究不足
The study is limited to simulations and does not include physical experiments. The performance analysis is constrained to specific conditions such as 50km SSMF length and certain FWHM values of the laser source.
1：Experimental Design and Method Selection:
Simulation of a 10Gbps DDOOFDM system with 50km standard single mode fiber channel using RSOFT Design Group OptSim Version-5.
2：Sample Selection and Data Sources:
2.
2. Sample Selection and Data Sources: Digital data stream converted to parallel blocks, applied 16-QAM modulation, and processed through IFFT to generate time domain RF OFDM signal.
3：List of Experimental Equipment and Materials:
Continuous wave laser source, Mach-Zehnder Modulator (MZM), Optical Band Pass Filter (OBPF), PIN photo diode, and standard single mode fiber (SSMF).
4：Experimental Procedures and Operational Workflow:
Up-conversion of baseband RF OFDM signal, modulation to optical OFDM signal, transmission over 50km SSMF, and conversion back to RF OFDM signal at the receiver.
5：Data Analysis Methods:
Measurement of BER vs. OSNR for different lengths of SSMF channel and varying FWHM values of the laser source.
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