Title :
Wavelength optical/electronic encoding module for ATM optical-switching
Author :
Hourany, J. ; Chauzat, C. ; Billard, M. ; De Bouard, D. ; Lefevre, R.
Author_Institution :
CNET, Bagneux, France
Abstract :
We present a novel wavelength-encoding module, suitable for high-speed wavelength switching in wavelength-division multiplexing (WDM) networks. This module includes a tunable DBR laser and an original GaAs IC-driver, which is a full custom 0.5-μm gate-length P-HEMT IC. With fast switching time (300 ps), low power consumption (1.4 W), and small dimensions, this tunable-driver advantageously replaces the conventional electronics. Switching over four wavelength-modes has been demonstrated with parasitic wavelength-drifts lower than 0.02 nm, and switching times are mainly laser dependent. Implementation of the module inside a 4×4 ATM switching-matrix demonstrator working at 2.5 Gbit/s shows no degradation of the EER.
Keywords :
HEMT integrated circuits; asynchronous transfer mode; distributed Bragg reflector lasers; driver circuits; electro-optical switches; encoding; integrated optoelectronics; optical fibre networks; power consumption; semiconductor lasers; switching networks; tuning; wavelength division multiplexing; 0.5 mum; 1.4 W; 2.5 Gbit/s; 300 ps; ATM optical-switching; ATM switching-matrix demonstrator; GaAs; GaAs IC-driver; WDM networks; fast switching time; gate-length P-HEMT IC; high-speed wavelength switching; laser dependent; low power consumption; parasitic wavelength-drifts; small dimensions; switching times; tunable DBR laser; tunable-driver; wavelength optical/electronic encoding module; wavelength-division multiplexing; wavelength-encoding module; wavelength-modes; Asynchronous transfer mode; Distributed Bragg reflectors; Encoding; Energy consumption; Gallium arsenide; High speed optical techniques; Power lasers; Tunable circuits and devices; WDM networks; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
