Li, Z;
Erkilinc, MS;
Maher, R;
Galdino, L;
Shi, K;
Thomsen, BC;
Bayvel, P;
(2016)
Two-Stage Linearization Filter for Direct-Detection Subcarrier Modulation.
IEEE Photonics Technology Letters
, 28
(24)
pp. 2838-2841.
10.1109/LPT.2016.2623491.
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Abstract
A novel digital two-stage linearization filter is proposed for direct-detection (DD) systems and assessed experimentally for the first time. The performance improvement is quantified by experiments with a 7 × 25 Gb/s wavelength division multiplexing DD single sideband 16-QAM Nyquist-shaped subcarrier modulation system with a net optical information spectral density of 2.3 (b/s)/Hz. The results indicate that this technique can effectively compensate the nonlinearity caused by square-law detection, while, at the same time reducing the DSP complexity, avoiding the need to perform the multiple iterations which are required in previously proposed beating interference cancellation methods.
| Type: | Article |
|---|---|
| Title: | Two-Stage Linearization Filter for Direct-Detection Subcarrier Modulation |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/LPT.2016.2623491 |
| Publisher version: | http://dx.doi.org/10.1109/LPT.2016.2623491 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Direct detection, Nyquist-pulse shaped subcarrier modulation, signal-signal beat interference cancellation, spectrally-efficient wavelength division multiplexing, Transmission, Cancellation, Direct detection, Nyquist-pulse shaped subcarrier modulation, signal-signal beat interference cancellation, spectrally-efficient wavelength division multiplexing |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1531899 |
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