Impact of Receiver on In-Band Crosstalk-Induced Penalties in Differentially Phase-Modulated Signals

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The impact of optical receiver configuration on in-band crosstalk-induced penalty has been investigated in both theoretical and experimental analyses, for differential phase-shift keying (DPSK) and differential quadrature phase-shift keying (DQPSK) signals. Previously it has been shown that DPSK signals are similar to 6 dB more tolerant to in-band crosstalk than on-off keying (OOK) signals. However, we find that the tolerance difference between the two signals is reduced to similar to 3 dB when the decision threshold of the receiver is optimized to minimize the bit-error rate for each signal. Then we derive simple equations for the in-band crosstalk-induced penalty in DPSK and DQPSK signals with two different optical receiver configurations: balanced and single-ended direct-detection receivers. We confirm that the penalties obtained from our simple equations agree well with the measured results
Publisher
OPTICAL SOC KOREA
Issue Date
2016-04
Language
English
Article Type
Article
Citation

JOURNAL OF THE OPTICAL SOCIETY OF KOREA, v.20, no.2, pp.223 - 227

ISSN
1226-4776
DOI
10.3807/JOSK.2016.20.2.223
URI
http://hdl.handle.net/10203/209528
Appears in Collection
EE-Journal Papers(저널논문)
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