Intermodulation distortion in optical amplifiers from carrier-density modulation

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Intermodulation distortion in optical amplifiers from carrier-density modulation

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© The Institution of Electrical Engineers
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We present a theoretical model describing the generation of intermodulation products (IMPs) in semiconductor optical amplifiers by signal-induced carrier-density modulation. The IMPs depend strongly on the linewidth-enhancement factor and the ratio of output intensity to the saturation intensity of the amplifier. Calculation of the total intermodulation penalty for multichannel amplifier applications is possible using the expressions presented.

Inspec keywords: semiconductor junction lasers; carrier density; intermodulation; optical communication equipment; optical modulation; amplifiers

Other keywords: saturation intensity; optical communication equipment; output intensity; linewidth-enhancement factor; intermodulation products; multichannel amplifier applications; semiconductor lasers; carrier-density modulation; optical amplifiers

Subjects: Optical communication; Electromagnetic compatibility and interference; Semiconductor lasers

References

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