Impact of local oscillator intensity noise and the threshold level on the performance of a {2×2} and {3×3} phase-diversity ASK receiver

Author

De Krom, Wilbert H C

Author_Institution

Dept. of Electr. Eng., Eindhoven Univ. of Technol., Netherlands

Volume

9

Issue

5

fYear

1991

fDate

5/1/1991 12:00:00 AM

Firstpage

641

Lastpage

649

Abstract

The impact of local oscillator intensity noise and the threshold level on the performance of the {2×2} and the {3×3} phase-diversity amplitude-shift keying (ASK) receiver has been investigated for the first time for non-Gaussian statistics. Exact equations are derived for the bit-error-rate (BER), taking into account the non-Gaussian statistics and the statistical dependency of the relative intensity noise (RIN) in the receiver branches. The results differ substantially from the case in which a priori Gaussian statistics were assumed. The sensitivity penalty of the receivers is calculated with respect to the performance of an ideal heterodyne ASK receiver for a BER of 10^-9. It is shown that for a minimum sensitivity penalty the threshold level should be chosen in relation to the local oscillator power and the intensity noise level

Keywords

amplitude modulation; optical communication equipment; optical modulation; random noise; receivers; bit-error-rate; coherent optical communications; ideal heterodyne ASK receiver; local oscillator intensity noise; nonGaussian statistics; performance; phase diversity amplitude shift keying receiver; receiver branches; relative intensity noise; sensitivity penalty; statistical dependency; threshold level; Amplitude shift keying; Bit error rate; Laser noise; Local oscillators; Noise level; Optical mixing; Optical noise; Optical receivers; Optical sensors; Phase noise;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.79541

Filename

79541