Abstract

Silicon-on-insulator (SOI) waveguide designs have shown merit in highly integrated photonic devices and the associated manufacturing technique has achieved an acceptable level of maturity in the microphotonic industry. Thus, the sharp bending of SOI waveguides and/or deflection of light between SOI waveguides are the considerable interest for practical integrated SOI components. In this paper, a theoretical model is proposed for studying a variety of SOI rib waveguide corner mirror structures. Using the model, the precise positioning of the reflector is first studied, then the minimum acceptable reflector length and width are analyzed, and finally an effective reflecting interface (ERI) is found and determined by considering Goos-Hanchen effect. After being optimized with respect to the parameters: dimension (the length and width), position, surface roughness and tilt angle of mirror plane, and material refractive index of reflector, and their relations, the transfer efficiency of the corner mirror can achieve over 96% and 92% at the mirror-plane tilt-angles of respective 0$^{\circ}$ and 1$^{\circ}$ over a wide range of the corner angles of 80-120$^{\circ}$ even accounting for the 100-Å surface roughness of reflector is considered. The results of the model are validated via a full simulation using the commercial software tool: OptiFDTD.

© 2009 IEEE

Low-loss submicrometer silicon-on-insulator rib waveguides and corner mirrors

S. Lardenois, D. Pascal, L. Vivien, E. Cassan, S. Laval, R. Orobtchouk, M. Heitzmann, N. Bouzaida, and L. Mollard
Opt. Lett. 28(13) 1150-1152 (2003)

Analysis of the birefringence of a silicon-on-insulator rib waveguide

Daoxin Dai and Sailing He
Appl. Opt. 43(5) 1156-1161 (2004)

Compact and low loss silicon-on-insulator rib waveguide 90° bend

Yusheng Qian, Seunghyun Kim, Jiguo Song, Gregory P. Nordin, and Jianhua Jiang
Opt. Express 14(13) 6020-6028 (2006)

Tunable Bragg reflectors on silicon-on-insulator rib waveguides

Ivano Giuntoni, Andrzej Gajda, Michael Krause, Ralf Steingrüber, Jürgen Bruns, and Klaus Petermann
Opt. Express 17(21) 18518-18524 (2009)

Ultracompact splitter for submicrometer silicon-on-insulator rib waveguides

Alain Koster, Eric Cassan, Suzanne Laval, Laurent Vivien, and Daniel Pascal
J. Opt. Soc. Am. A 21(11) 2180-2185 (2004)