Title :
Multichannel operation of AOTF switches: reducing channel-to-channel interaction
Author :
Jackel, Janet L. ; Baran, Jane E. ; Chang, G.K. ; Iqbal, M. Zafar ; Song, G. Hugh ; Tomlinson, W.J. ; Fritz, Daniel ; Ade, Robert
Author_Institution :
Bellcore, Red Bank, NJ, USA
fDate :
4/1/1995 12:00:00 AM
Abstract :
An acoustooptic tunable filter (AOTF) can be used as a multichannel wavelength-routing switch; however, switching efficiency decreases and the switched wavelength channels shift toward each other when neighboring channels are selected simultaneously. We explain the cause of this behavior and show how to reduce the degradation in switch characteristics using a combination of passband flattening and counterpropagating acoustic waves.<>
Keywords :
acousto-optical filters; acousto-optical switches; optical communication equipment; telecommunication network routing; tuning; wavelength division multiplexing; AOTF switches; acoustooptic tunable filter; channel-to-channel interaction; counterpropagating acoustic waves; multichannel operation; multichannel wavelength-routing switch; neighboring channels; passband flattening; switched wavelength channel shift; switching efficiency; Acoustic waves; Crosstalk; Degradation; Filters; Frequency; Optical switches; Passband; Tunable circuits and devices; Wavelength routing;
Journal_Title :
Photonics Technology Letters, IEEE
