Adaptive Control for Laser Transmitter Feedforward Linearization System

Author

Neo, Y.S. ; Idrus, S.M. ; Rahmat, M.F. ; Alavi, S.E. ; Amiri, I.S.

Author_Institution

PhotoJohornic Res. Lab., Univ. Teknol. Malaysia, Skudai, Malaysia

Volume

6

Issue

4

fYear

2014

fDate

Aug. 2014

Firstpage

1

Lastpage

10

Abstract

In this paper, an adaptive control system is employed in a novel implementation technique of the feed forward linearization system for optical analog communication systems´ laser transmitter. The adaptive control system applies the Newton trust-region dogleg algorithm, which is a numerical optimization algorithm, to automatically tune the adjustment parameters in the feedforward loops to optimize the feed forward system performance and adapt to process variations. At the end of this paper, significant reductions of over 20 dBm in the third-order inter modulation distortion products have been achieved for operating frequencies from 5.0 to 5.8 GHz.

Keywords

adaptive control; linearisation techniques; optical modulation; optical transmitters; optimisation; Newton trust-region dogleg algorithm; adaptive control; feedforward linearization system; frequency 5.0 GHz to 5.8 GHz; laser transmitter; numerical optimization algorithm; optical analog communication systems; third-order inter modulation distortion products; Adaptive control; Diode lasers; Equations; Feedforward neural networks; Linear programming; Mathematical model; Semiconductor lasers; Adaptive control system; Newton trust-region dogleg; feedforward linearization; laser transmitter; numerical optimization;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2014.2335711

Filename

6848805