Title :
Adiabatic and Multimode Interference Couplers on Silicon-on-Insulator
Author :
Solehmainen, Kimmo ; Kapulainen, Markku ; Harjanne, Mikko ; Aalto, Timo
Author_Institution :
VTT Tech. Res. Centre of Finland, Espoo
Abstract :
Adiabatic and multimode interference (MMI) 3-dB couplers based on silicon-on-insulator rib waveguides were fabricated and measured. For testing purposes, pairs of identical couplers were cascaded to form Mach-Zehnder interferometers. The adiabatic couplers showed excess on-chip loss of ~0.5 dB, extinction ratio (ER) of 15-20 dB, and a wide spectral range. The MMI couplers processed on the same wafer showed similar loss per coupler, higher ER, and limited spectral characteristics
Keywords :
Mach-Zehnder interferometers; light interference; optical couplers; optical fabrication; optical losses; optical waveguides; rib waveguides; silicon-on-insulator; Mach-Zehnder interferometers; adiabatic interference couplers; extinction ratio; multimode interference couplers; rib waveguides; silicon-on-insulator; Couplers; Erbium; Interference; Optical device fabrication; Optical devices; Optical losses; Optical polarization; Optical sensors; Optical waveguides; Silicon on insulator technology; Integrated optics; optical device fabrication; optical planar waveguide couplers; silicon-on-insulator (SOI) technology;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.885305
