Title :
Design of a 1×4 silicon wavelength demultiplexer based on multimode interference in a slot waveguide structures
Author :
Malka, Dror ; Zalevsky, Zeev ; Sintov, Yoav
Author_Institution :
Fac. of Eng., Bar-Ilan Univ., Rmat-Gan, Israel
Abstract :
In this paper, we present a 1×4 wavelength demultiplexer operating at 1.4μm, 1.45μm, 1.5μm and 1.55 μm wavelength, based on multimode interference (MMI) coupler in a slot waveguide structure. The design is based on a cascade of three 1×2 MMI demultiplexer. Tapered waveguide structures are being used to connect the input/output and the MMI section, for reducing the excess loss. Since the slot waveguide encompass true guided modes, confined by total internal reflections, there are no noticeable confinement losses. A BPM simulation is applied for optimizing the device parameters and assessing its performance. To the best of our knowledge it is the first time that a 1×4 demultiplexer is being implemented by a based MMI slot waveguide.
Keywords :
demultiplexing equipment; elemental semiconductors; optical communication equipment; optical couplers; optical design techniques; optical waveguides; silicon; BPM simulation; MMI; Si; multimode interference coupler; silicon wavelength demultiplexer design; slot waveguide structures; total internal reflections; wavelength 1.4 mum to 1.55 mum; Couplers; Interference; Optical waveguides; Optimized production technology; Silicon photonics; BPM; MMI; Wavelength demultiplexer; silicon photonic; waveguide;
Conference_Titel :
Electrical & Electronics Engineers in Israel (IEEEI), 2014 IEEE 28th Convention of
Conference_Location :
Eilat
Print_ISBN :
978-1-4799-5987-7
DOI :
10.1109/EEEI.2014.7005746
