All-optical clock recovery from NRZ data with simple NRZ-to-PRZ converter based on self-phase modulation of semiconductor optical amplifier

Author

Lee, Hyuek Jae ; Kim, Hae Geun ; Choi, Jee Yon ; Lee, Hak Kyu

Author_Institution

Electron. & Telecommun. Res. Inst., Taejon, South Korea

Volume

35

Issue

12

fYear

1999

fDate

6/10/1999 12:00:00 AM

Firstpage

989

Lastpage

990

Abstract

The feasibility of all-optical clock recovery (CR) from non-return-to-zero (NRZ) data with a simple NRZ-to-pseudo-RZ (PRZ) converter based on the self-phase modulation (SPM) of a semiconductor optical amplifier (SOA) is empirically presented. The SPM induces a frequency chirp at every leading edge of the NRZ data passing through the SOA. The SPM-induced chirp component is extracted by an optical grating bandpass filter and then transformed to PRZ data with a low polarisation dependency of ~0.7 dB. By transmitting the PRZ data into a mode-locked Er-doped fibre laser, all-optical CR has been achieved at 2.5 Gbit/s

Keywords

chirp modulation; light polarisation; optical transmitters; self-phase modulation; semiconductor optical amplifiers; synchronisation; 2.5 Gbit/s; NRZ data; SPM-induced chirp component; all-optical clock recovery; low polarisation dependency; mode-locked Er-doped fibre laser; non-return-to-zero data; optical grating bandpass filter; self-phase modulation; semiconductor optical amplifier; simple NRZ-to-PRZ converter;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:19990700

Filename

788062