Evaluation of crosstalk penalty in multichannel ASK heterodyne optical communication systems

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Evaluation of crosstalk penalty in multichannel ASK heterodyne optical communication systems

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© The Institution of Electrical Engineers
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The bit error rate (BER) of a two-channel ASK heterodyne lightwave system employing envelope detection is evaluated analytically. The result is used to calculate the power penalty resulting from intrachannel crosstalk. To main a BER below 10−9, the power penalty increases from 0.2 to 1 dB when the level of crosstalk increases from −15 to −10 dB. The theory predicts a minimum channel spacing of three times the bit rate if the design criterion is to keep the crosstalk penalty below 0.1 dB. The minimum channel spacing increases to five times the bit rate for multichannel systems when crosstalk from the nearest neighbours on both sides is included.

Inspec keywords: crosstalk; amplitude modulation; error statistics; optical links; telecommunication channels; digital communication systems

Other keywords: ASK; minimum channel spacing; bit error rate; intrachannel crosstalk; two channel; amplitude shift keying; power penalty; multichannel; BER; optical communication systems; heterodyne; envelope detection; crosstalk penalty; digital transmission

Subjects: Optical communication

References

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      • P. Healey . Effect of intermodulation in multichannel optical heterodyne systems. Electron. Lett. , 101 - 103
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