Title :
Design of Long-Period Grating Couplers Based on Asymmetric Dual-Core Fibres
Author :
Chan, Florence Y M ; Yasumoto, Kiyotoshi
Author_Institution :
Kyushu Univ., Fukuoka
Abstract :
We demonstrate a grating coupler using an asymmetric dual-core fibre with a pair of long-period gratings (LPGs). Simple formulas for the achievement of high coupling efficiency are derived and the results are compared with reported LPG couplers based on two discrete fibres. Our results show that with a proper choice of grating parameters, the coupling efficiency reaches 100%. A passing band with steep band transitions and side lobes less than ~25 dB can be achieved.
Keywords :
diffraction gratings; optical couplers; optical fibres; asymmetric dual-core fibres; discrete fibres; long-period grating couplers; passing band; steep band transitions; Computer science; Fabrication; Fiber gratings; Frequency conversion; Optical coupling; Optical fiber couplers; Packaging; Resonance;
Conference_Titel :
Electromagnetics in Advanced Applications, 2007. ICEAA 2007. International Conference on
Conference_Location :
Torino
Print_ISBN :
978-1-4244-0767-5
Electronic_ISBN :
978-1-4244-0767-5
DOI :
10.1109/ICEAA.2007.4387437
