Title :
Dynamics of frequency switching in tunable asymmetric Y-branch lasers
Author :
Kuznetsov, M. ; Shankaranarayanan, N.K. ; Verlangieri, P. ; Dentai, A.G.
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
fDate :
6/1/1993 12:00:00 AM
Abstract :
Measurements of the frequency switching dynamics of discretely tunable asymmetric Y-branch (AYB) lasers with a single current tuning control are described. It is observed that the switching time depends on the frequency separation of the two switched modes, with faster switching for modes which are further apart. The switch-off time of a mode is faster, as short as 4 ns, while the switch-on time is slower, on the order of 10 nm. It is suggested that this switching behavior can be explained by the spectral transients of the laser during switching. Such AYB lasers can be used in the transmitters of packet-switched wavelength-multiplexed communication networks.<>
Keywords :
laser modes; laser tuning; optical communication equipment; optical switches; 4 ns; frequency separation; frequency switching; packet-switched wavelength-multiplexed communication networks; spectral transients; switch-off time; switched modes; switching time; tunable asymmetric Y-branch lasers; tuning control; Communication switching; Fiber lasers; Filters; Frequency measurement; Laser modes; Laser tuning; Optical control; Optical tuning; Packet switching; Tunable circuits and devices;
Journal_Title :
Photonics Technology Letters, IEEE
