Title :
Wide rejection band multidemultiplexer at 1.3-1.55 mu m by cascading high-silica three-waveguide couplers on Si
Author :
Barbarossa, G. ; Laybourn, P.J.R.
Author_Institution :
Dept. of Electron. & Electr. Eng., Glasgow Univ., UK
Abstract :
A novel configuration for an optical guided-wave wide rejection band multidemultiplexer at 1.3 and 1.55 mu m is reported. For a stopband rejection loss of 20 dB, a rejection bandwidth of 160 nm is achieved by cascading and appropriately connecting three high-silica three-waveguide directional couplers on Si. The cascading concept behind the rejection bandwidth improvement is simple and straightforward, and lends itself to a systematic approach for the synthesis of spectral responses for wideband filtering operations.
Keywords :
directional couplers; frequency division multiplexing; multiplexing equipment; optical communication equipment; optical couplers; 1.3 to 1.55 micron; 20 dB; Si; SiO 2-Si; WDM; cascading concept; directional couplers; multidemultiplexer; rejection bandwidth improvement; stopband rejection loss; three-waveguide couplers; wide rejection band; wideband filtering operations;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911291
