Title :
Loss-imbalance equalisation of arrayed-waveguide grating add-drop multiplexer
Author :
Ishida, O. ; Takahashi, H.
Author_Institution :
NTT Transmission Syst. Labs., Kanagawa, Japan
fDate :
7/7/1994 12:00:00 AM
Abstract :
Loss imbalance in an (N-1)-channel arrayed-waveguide grating add-drop multiplexer is equalised by optimising the offset of the loop-back optical-path connections. The largest loss-difference among 15 WDM channels is successfully reduced from 5.0 dB to 1.5 dB when the loop-back paths connect the output ports to the N/2-shifted input ports of a silica-based N×N multiplexer (N=16)
Keywords :
diffraction gratings; equalisers; integrated optics; multiplexing equipment; optical communication equipment; optical waveguide components; wavelength division multiplexing; WDM channels; add-drop multiplexer; arrayed-waveguide grating; loop-back optical-path connections; loss-imbalance equalisation; silica-based N×N multiplexer;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940771
