Title :
Temporal characteristics and scaling considerations of multimode interference couplers
Author_Institution :
Army Res. Lab., Adelphi, MD, USA
fDate :
7/1/1999 12:00:00 AM
Abstract :
A mode propagation model is used to analyze the temporal response of a multimode interference (MMI) coupler. The response is characterized as a function of the splitting ratio so that the effects of architectural scaling can be predicted. Results are presented for a specific coupler design. The results indicate that an increase in aggregate bandwidth, defined as the combined bandwidth of the parallel output channels of the coupler, is accompanied by a decrease in coupled power and energy. The loss in efficiency is shown to be independent of whether the increase in aggregate bandwidth is produced by an increase in the splitting ratio or the signal bandwidth
Keywords :
integrated optics; optical beam splitters; optical couplers; optical design techniques; optical losses; optical waveguide theory; aggregate bandwidth; architectural scaling; beam splitting ratio; coupled power; integrated optics; mode propagation model; multimode interference couplers; parallel output channels; scaling consideration; specific coupler design; temporal characteristics; Aggregates; Bandwidth; Couplers; High speed optical techniques; Integrated optics; Interference; Optical devices; Optical interconnections; Optical waveguides; Propagation constant;
Journal_Title :
Lightwave Technology, Journal of
