Title :
Effect of sidelobes on demultiplexing characteristics of a grating-folded directional coupler demultiplexer
Author :
Shibata, Yasuo ; Oku, Satoshi ; Kondo, Yasuhiro ; Tamamura, Toshiaki
Author_Institution :
NTT Opto-Electron. Labs., Kanagawa, Japan
Abstract :
The effect of sidelobes on the demultiplexing characteristics of a grating-folded directional coupler demultiplexer are investigated. The bit error-rate characteristics of the demultiplexed signal is examined, and a power penalty originated from the sidelobe is observed for the grating-folded directional coupler with conventional uniform grating. A phase-synchronized sampled grating is applied to suppress the sidelobe of a Bragg grating, and power-penalty-free demultiplexing is achieved in this structure.
Keywords :
demultiplexing equipment; diffraction gratings; optical communication equipment; optical directional couplers; synchronisation; Bragg grating; bit error-rate characteristics; conventional uniform grating; demultiplexed signal; demultiplexing characteristics; grating-folded directional coupler demultiplexer; phase-synchronized sampled grating; power penalty; sidelobes; Bragg gratings; Couplings; Crosstalk; Demultiplexing; Directional couplers; Etching; Indium phosphide; Mirrors; Optical reflection; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
