Binary-to-Quaternary ASK Encoding in the Optical Domain With Semiconductor Optical Amplifiers

Author

Porzi, Claudio ; Nguyen, An Truong ; Potì, Luca ; Bogoni, Antonella

Author_Institution

Scuola Superiore Sant´´Anna, Pisa

Volume

21

Issue

10

fYear

2009

fDate

5/15/2009 12:00:00 AM

Firstpage

654

Lastpage

656

Abstract

Quaternary amplitude-shift-keying signal is all-optically generated from binary signals exploiting gain compression in two semiconductor optical amplifiers. The scheme is suitable for phase-control-free all-optical digital-to-analog conversion. Only two semiconductor amplifiers, a single optical filter, and no assist probe light are required for 2-bit operation. In addition, the input wavelength is preserved at the output of the device. Dynamic operation is experimentally demonstrated. The quality of the level-converted signal is confirmed by the high Q -factor of the output eye diagrams.

Keywords

Q-factor; amplitude shift keying; digital-analogue conversion; encoding; optical filters; semiconductor optical amplifiers; Q-factor; binary-to-quaternary ASK encoding; gain compression; optical domain; output eye diagrams; phase-control-free all-optical digital-to-analog conversion; quaternary amplitude-shift-keying signal; semiconductor optical amplifiers; single optical filter; All-optical binary-to-quaternary amplitude- shift-keying (ASK) encoding; all-optical digital-to-analog conversion (DAC); all-optical signal processing; semiconductor optical amplifiers (SOAs);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2009.2015962

Filename

4787149