Title :
Comparative simulation of three types of 3-dB coupler using a Si wire waveguide
Author :
Tanaka, D. ; Ikuma, Y. ; Tsuda, H. ; Kintaka, K.
Author_Institution :
Grad. Sch. of Sci. & Technol., Keio Univ., Yokohama, Japan
Abstract :
We have proposed a cross gap coupler (CGC), which has an X-junction with an internal mirror at the cross section. We compared the splitting properties of three types of 3-dB coupler using a silicon wire waveguide; a CGC, a directional coupler (DC), and a multimode interference (MMI) coupler. The wavelength dependences of these structures were simulated (or evaluated) by two-dimensional finite-difference time-domain (2-D FDTD) method. The CGC showed smaller wavelength dependence in comparison to the other types of coupler.
Keywords :
directional couplers; elemental semiconductors; finite difference time-domain analysis; mirrors; silicon; waveguides; 2D FDTD method; Si; X-junction; cross gap coupler; directional coupler; internal mirror; multimode interference coupler; silicon wire waveguide; splitting properties; two-dimensional finite difference time domain; Silicon on insulator (SOI); cross gap coupler; directional coupler; multimode interference coupler; optical circuit;
Conference_Titel :
Communications and Electronics (ICCE), 2010 Third International Conference on
Conference_Location :
Nha Trang
Print_ISBN :
978-1-4244-7055-6
DOI :
10.1109/ICCE.2010.5670648
