Fiber-optic transmissions of microwave 8-phase-PSK and 16-ary quadrature-amplitude-modulated signals at the 1.3-μm wavelength region

Author

Way, W.I.

Author_Institution

Bell Commun. Res., Red Bank, NJ, USA

Volume

6

Issue

2

fYear

1988

fDate

2/1/1988 12:00:00 AM

Firstpage

273

Lastpage

280

Abstract

Transmissions of a 6-GHz 8-phase phase-shift-keyed (8φ-PSK) signal over a 12.5-km single-mode fiber with a 5-dB power margin and bit-error-rate (BER) of 10^-10 and a 6-GHz 16-ary quadrature-amplitude-modulated (QAM) signal over the same distance with a 2-dB power margin and BER of 10^-12 were demonstrated. The 8φ-PSK digital modem operated at 78Mb/s and the 16-QAM digital modem operated at 90 Mb/s. A high-speed multimode InGaAsP laser diode and a high-speed p-i-n diode were used in both fiber-optic transmission systems. Floor characteristics and power penalties observed in the BER performances of both systems were found to be caused by the intensity noise of the laser diode, particularly the reflection-induced intensity noise

Keywords

amplitude modulation; microwave links; modems; optical communication; optical fibres; optical links; phase shift keying; 1.3 micron; 12.5 km; 16-ary quadrature-amplitude-modulated signals; 6 GHz; 78 Mbit/s; 8-phase PSK signal, floor characteristics; 90 Mbit/s; bit-error-rate; digital modem; high-speed p-i-n diode; multimode InGaAsP laser diode; power penalties; single-mode fiber; Bandwidth; Bit error rate; Diode lasers; Modems; Noise figure; Optical fiber communication; Optical noise; P-i-n diodes; Phase shift keying; Quadrature amplitude modulation;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.3999

Filename

3999