Erbium Amplifier Dynamics in Wireless Analog Optical Links With Modulator Bias Optimization

Author

Sisto, Marco Michele ; LaRochelle, Sophie ; Rusch, Leslie Ann ; Giaccari, Philippe

Author_Institution

Dept. of Electr. & Comput. Eng., Laval Univ., Que.

Volume

19

Issue

6

fYear

2007

fDate

3/15/2007 12:00:00 AM

Firstpage

408

Lastpage

410

Abstract

Modulator bias optimization is a technique used to improve the transmitted radio-frequency power of amplified analog optical links. However, when bias optimization is used, the mean optical power at the modulator output is dependent on the amplitude of the modulation signal. In this letter, we show how fluctuations of the modulation signal power, in conjunction with the dynamic behavior of the erbium optical amplifier, can deteriorate the transmission of data frames compliant to the 802.11 a/g IEEE protocol. Optical and electrical compensating methods, based on mean power clamping at the modulator output, are proposed, and their efficiency in restoring a high-quality transmission is demonstrated

Keywords

erbium; fluctuations; microwave photonics; optical communication equipment; optical fibre amplifiers; optical modulation; radio-over-fibre; amplified optical links; analog optical links; data frames transmission; electrical compensating method; erbium amplifier dynamics; erbium optical amplifier; fluctuations; high-quality transmission; mean power clamping; modulation signal amplitude; modulator bias optimization; optical compensating method; wireless optical links; Amplitude modulation; Erbium; Erbium-doped fiber amplifier; Optical amplifiers; Optical fiber communication; Optical modulation; Radio frequency; Radiofrequency amplifiers; Semiconductor optical amplifiers; Stimulated emission; Analog optical links; microwave photonics; optical amplifier dynamics; optical modulation;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2007.892885

Filename

4116771