Optimization of crosstalk and power penalty in semiconductor optical amplifiers for 10 × 80 Gb/s WDM over long transmission using soliton RZ-DPSK format

Harmanjeet Kaur Sidhu; R. S. Kaler

doi:10.1117/12.684980

2 October 2006 Optimization of crosstalk and power penalty in semiconductor optical amplifiers for 10 × 80 Gb/s WDM over long transmission using soliton RZ-DPSK format

Harmanjeet Kaur Sidhu, R. S. Kaler

Author Affiliations +

Proceedings Volume 6389, Active and Passive Optical Components for Communications VI; 63891B (2006) https://doi.org/10.1117/12.684980
Event: Optics East 2006, 2006, Boston, Massachusetts, United States

Abstract

We investigated twenty channels at 80 Gb/s wavelength division multiplexing (WDM) transmission over 910 km single mode fiber & dispersion compensating fiber using cascaded in-line semiconductor optical amplifiers at span of 70 km for soliton RZ-DPSK (return zero differential phase shift keying) modulation format. With the narrow channel spacing i.e. 200 GHz, we obtained quality more than 15dB of the received signals after covering 910 km transmission distance without any power drop. We optimize the SOA model for in-line amplifier having low cross talk in multi channel WDM systems at zero power penalty with sufficient gain. We show that for the differential gain 200 atto cm² and length 750 mm of SOA has minimum SOA induced crosstalk. The impact of optical power received and Q factor at different differential gain, carrier lifetime and length has been illustrated. It is found that for transmission distance 700 km, as we decrease the channel spacing, there is increase in crosstalk among channels hence quality of signal goes on decreasing. We show clear eye diagram and good optical spectrum is observed at the transmission distance 910 km in soliton RZ-DPSK system.

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Harmanjeet Kaur Sidhu and R. S. Kaler "Optimization of crosstalk and power penalty in semiconductor optical amplifiers for 10 × 80 Gb/s WDM over long transmission using soliton RZ-DPSK format", Proc. SPIE 6389, Active and Passive Optical Components for Communications VI, 63891B (2 October 2006); https://doi.org/10.1117/12.684980

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KEYWORDS

Wavelength division multiplexing

Solitons

Modulation

Semiconductor optical amplifiers

Optical amplifiers

Single mode fibers

Eye

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