Title :
Influence of fast gain depletion on the dynamic response of TOAD´s
Author :
Tang, J.M. ; Spencer, Paul S. ; Shore, K. Alan
Author_Institution :
Sch. of Electron. Eng. & Comput. Syst., Wales Univ., UK
fDate :
1/1/1998 12:00:00 AM
Abstract :
The operating characteristics of the terahertz optical asymmetric demultiplexer (TOAD) devices subject to picosecond control pulses have been investigated taking into account gain saturation and nonlinear gain compression, due to carrier heating and spectral holeburning. It is shown that when the control pulse width is less than ~2 ps, fast gain depletion process appears in the time resolved gain dynamics of the SOA. The fast depletion process leads to an oscillating output power structure in the switched region. The oscillatory structure is found to persist for over 1 ps and sets a limit on the practical utilization of these devices
Keywords :
demultiplexing equipment; dynamic response; electro-optical switches; high-speed optical techniques; refractive index; semiconductor lasers; 2 ps; TOAD´s; carrier heating; control pulse width; dynamic response; fast gain depletion; fast gain depletion process; gain saturation; nonlinear gain compression; operating characteristics; oscillating output power structure; oscillatory structure; picosecond control pulses; spectral holeburning; switched region; terahertz optical asymmetric demultiplexer; time resolved gain dynamics; Heating; Nonlinear optical devices; Nonlinear optics; Optical control; Optical devices; Optical pulses; Optical saturation; Pulse compression methods; Space vector pulse width modulation; Temperature control;
Journal_Title :
Lightwave Technology, Journal of
