High phase noise tolerant pilot-tone-aided DP-QPSK optical communication systems | Zendy

Xu Zhang | Zendy; Xiaodan Pang | Zendy; Lei Deng | Zendy; Darko Zibar | Zendy; Idelfonso Tafur Monroy | Zendy; Richard Younce | Zendy

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High phase noise tolerant pilot-tone-aided DP-QPSK optical communication systems

Author(s) -

Xu Zhang,

Xiaodan Pang,

Lei Deng,

Darko Zibar,

Idelfonso Tafur Monroy,

Richard Younce

Publication year - 2012

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.019990

Subject(s) - phase shift keying , phase noise , bit error rate , optics , laser linewidth , keying , computer science , optical communication , free space optical communication , electronic engineering , physics , laser , telecommunications , decoding methods , engineering

In this paper we experimentally demonstrate a novel, high phase-noise tolerant, optical dual polarization (DP) quadrature phase-shift keying (QPSK) communication system based on pilot-tone-aided phase noise cancellation (PNC) algorithm. Vertical cavity surface emitting lasers (VCSELs) with approximate 300 MHz linewidth are used as transmitters and local oscillators for coherent detection of optical DP-QPSK signals. The proposed system, with central wavelength at 1540.68 nm, operates at 40 Gb/s over 80 km single mode fiber (SMF) as part of a passive optical network (PON). The deployment of pilot-tone-aided PNC algorithm guarantees a bit error rate (BER) performance below the forward error correction (FEC) threshold. Moreover, we also evaluate a novel digital signal processing (DSP) algorithm for adaptive pilot tone detection.

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