Millar, DS;
Savory, SJ;
(2011)
Blind adaptive equalization of polarization-switched QPSK modulation.
Optics Express
, 19
(9)
8533 - 8538.
10.1364/OE.19.008533.
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Abstract
Coherent detection in combination with digital signal processing has recently enabled significant progress in the capacity of optical communications systems. This improvement has enabled detection of optimum constellations for optical signals in four dimensions. In this paper, we propose and investigate an algorithm for the blind adaptive equalization of one such modulation format: polarization-switched quaternary phase shift keying (PS-QPSK). The proposed algorithm, which includes both blind initialization and adaptation of the equalizer, is found to be insensitive to the input polarization state and demonstrates highly robust convergence in the presence of PDL, DGD and polarization rotation. (C)2011 Optical Society of America
| Type: | Article |
|---|---|
| Title: | Blind adaptive equalization of polarization-switched QPSK modulation |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1364/OE.19.008533 |
| Publisher version: | http://dx.doi.org/10.1364/OE.19.008533 |
| Language: | English |
| Additional information: | This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OE.19.008533. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. |
| Keywords: | Coherent optical receivers, Systems |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1307813 |
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