研究目的
Investigating the suppression of scintillation effect in free space optical communication using gain saturated semiconductor optical amplifier with differential signal transmission.
研究成果
The proposed technique of using gain saturated SOA with DS transmission effectively compensates for ER degradation and mitigates scintillation effects in IM/DD FSO systems, as demonstrated by improved BER performance under various turbulence strengths.
研究不足
The study is conducted in a laboratory emulated environment, which may not fully replicate real-world atmospheric conditions. The technique's effectiveness in stronger scintillation conditions requires deeper gain saturation, which may introduce other challenges.
1:Experimental Design and Method Selection:
The study employs gain saturated semiconductor optical amplifier (SOA) with differential signal (DS) transmission to mitigate scintillation effects in free space optical (FSO) communication.
2:Sample Selection and Data Sources:
Two laser diodes with different wavelengths are used to generate DS.
3:List of Experimental Equipment and Materials:
Laser diodes, optical combiner, Mach-Zehnder modulator, optical band pass filter, photo detector.
4:Experimental Procedures and Operational Workflow:
DS is transmitted through a turbulence channel emulated using a Mach-Zehnder modulator, scintillation is suppressed by gain saturated SOA, and ER degradation is compensated by DS transmission.
5:Data Analysis Methods:
Bit-error rate (BER) performance is evaluated under different turbulence strengths.
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