Fast Wavelength Switching 6 GBd Dual Polarization 16QAM Digital Coherent Burst Mode Receiver

Author

Maher, Robert ; Lavery, Domanic ; Paskov, Milen ; Bayvel, Polina ; Savory, Seb J. ; Thomsen, Benn C.

Author_Institution

Opt. Networks Group, Univ. Coll. London, London, UK

Volume

26

Issue

3

fYear

2014

fDate

Feb.1, 2014

Firstpage

297

Lastpage

300

Abstract

A commercially available digital supermode distributed Bragg reflector tunable laser is employed as a fast wavelength switching local oscillator (LO) in a dual polarization (DP) 16-quadrature amplitude modulation (16QAM) coherent burst mode receiver. A digital coherence enhancement technique is used to compensate both the Lorentzian and non-Lorentzian distributed phase noise of the tunable LO laser. It is shown that differential decoding is not sufficient to overcome the substantial bit errors caused by the LO laser phase noise. However, the coherence enhancement technique enables the reception of low symbol rate DP-16QAM bursts, with an average optical signal to noise ratio penalty of 3.5 dB observed relative to theory at the forward error correction threshold (1.5×10^-2).

Keywords

distributed Bragg reflector lasers; forward error correction; laser noise; laser tuning; light coherence; light polarisation; optical modulation; optical receivers; optical switches; phase noise; quadrature amplitude modulation; Lorentzian distributed phase noise; bit error; differential decoding; digital coherence enhancement technique; digital supermode distributed Bragg reflector tunable laser; dual polarization 16-quadrature amplitude modulation coherent burst mode receiver; fast wavelength switching 6 GBd dual polarization 16QAM digital coherent burst mode receiver; fast wavelength switching local oscillator; forward error correction threshold; local oscillator laser phase noise; low symbol rate DP-16QAM bursts; nonLorentzian distributed phase noise; optical signal-to-noise ratio penalty; tunable local oscillator laser; Laser noise; Optical noise; Optical switches; Phase noise; Receivers; Signal to noise ratio; Tunable lasers; coherent communications; wavelength switching;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2013.2292542

Filename

6674054