[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.3807/JOSK.2016.20.2.223

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

Hu, Qikai (Department of Electrical and Computer Engineering, National University of Singapore)
Kim, Hoon (School of Electrical Engineering, KAIST)
Kim, Chul Han (School of Electrical and Computer Engineering, University of Seoul)

Publication Information

Journal of the Optical Society of Korea / v.20, no.2, 2016 , pp. 223-227 More about this Journal

Abstract

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 ~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 ~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.

Keywords

In-band crosstalk; Phase-shift keying (PSK); Balanced detection; Single-ended detection;

Citations & Related Records

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