Wavelength Tunability of All-Optical Clock-Recovery Based on Quantum-Dash Mode-Locked Laser Diode Under Injection of a 40-Gb/s NRZ Data Stream

Author

Parra-Cetina, Josué ; Latkowski, Sylwester ; Maldonado-Basilio, Ramón ; Landais, Pascal

Author_Institution

Res. Inst. for Networks & Commun. Eng. (RINCE), Dublin City Univ. (DCU), Dublin, Ireland

Volume

23

Issue

9

fYear

2011

fDate

5/1/2011 12:00:00 AM

Firstpage

531

Lastpage

533

Abstract

Wavelength tunability of an all-optical clock recovery operation based on a quantum-dash mode-locked Fabry-Pérot laser diode is experimentally investigated. Synchronization of the device to the injection of 40-Gb/s nonreturn-to-zero (NRZ) incoming data is assessed by analyzing both the carrier-to-noise ratio and the linewidth of the 40-GHz beat-tones measured at the mode-locked laser output. Under optical injection, beat-tone linewidths below 10 Hz are measured. Recovered clock pulses featuring a width of 1.6 ps are obtained irrespective of the wavelength detuning between the laser spectra and the optical carrier of the incoming data stream.

Keywords

laser mode locking; laser noise; laser tuning; quantum dash lasers; synchronisation; NRZ data stream; all-optical clock recovery; bit rate 40 Gbit/s; carrier-to-noise ratio; frequency 40 GHz; laser spectra; nonreturn-to-zero data stream; optical injection; quantum-dash mode locked Fabry-Pérot laser diode; wavelength tunability; Clocks; Laser mode locking; Optical amplifiers; Optical attenuators; Optical fibers; Semiconductor lasers; All-optical clock recovery; Fabry–Pérot laser; mode-locked laser; nonreturn-to-zero (NRZ); quantum dash;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2011.2111366

Filename

5708167