W-Band OFDM-RoF system employing optical up-conversion

Author

Lopes, V. ; Laurencio, P. ; Medeiros, M.C.R.

Author_Institution

Univ. of Algarve, Faro, Portugal

fYear

2014

fDate

6-10 July 2014

Firstpage

1

Lastpage

4

Abstract

In this paper, we discuss a specific implementation of W-Band RoF system employing optical up-conversion strategies and direct detection. The approach involves two cascaded commercially available MZMs combined with a distributed feedback (DFB) laser source with a MHz range linewidth. The proposed implementation generates an optical OFDM-modulated subcarrier modulated with 40 QPSK Gbit/s data and an unmodulated optical beating tone spaced by 105 GHz. We focus on analysing the system performance degradation caused by the laser phase noise (PN) and fiber chromatic dispersion (CD) within the OFDM signal bandwidth. It is shown that in such systems PN can be relevant even for relatively short fiber transmission distances.

Keywords

OFDM modulation; distributed feedback lasers; laser noise; optical fibre dispersion; optical fibre networks; optical modulation; phase noise; quadrature phase shift keying; radio-over-fibre; DFB laser source; MHz range linewidth; MZM; OFDM signal bandwidth; QPSK; W-band OFDM-RoF system; bit rate 40 Gbit/s; direct detection; distributed feedback laser source; fiber CD; fiber chromatic dispersion; fiber transmission distance; frequency 105 GHz; laser PN; laser phase noise; optical OFDM-modulated subcarrier; optical up-conversion strategy; system performance degradation; unmodulated optical beating tone; Fiber lasers; OFDM; Optical fiber dispersion; Optical fibers; Optical modulation; Optical transmitters; W-band; direct detection optical orthogonal frequency-division multiplexing (OFDM) systems; fiber chromatic dispersion; laser phase noise; radio over fiber (RoF);

fLanguage

English

Publisher

ieee

Conference_Titel

Transparent Optical Networks (ICTON), 2014 16th International Conference on

Conference_Location

Graz

Type

conf

DOI

10.1109/ICTON.2014.6876580

Filename

6876580