Open AccessOptical switching in hybrid VO2/Si waveguides thermally triggered by lateral microheaters
Author(s) -
Irene Olivares,
Luis Sánchez,
Jorge Parra,
Roberto Larrea,
Amadeu Griol,
Mariela Menghini,
Pía Homm,
Lee-Woon Jang,
Bart Van Bilzen,
Jin Won Seo,
JeanPierre Locquet,
Pablo Sanchís
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.012387
Subject(s) - materials science , bistability , optical switch , extinction ratio , optics , optoelectronics , bandwidth (computing) , optical power , wavelength , laser , computer network , physics , computer science
The performance of optical devices relying in vanadium dioxide (VO 2 ) technology compatible with the silicon platform depends on the polarization of light and VO 2 properties. In this work, optical switching in hybrid VO 2 /Si waveguides thermally triggered by lateral microheaters is achieved with insertion losses below 1 dB and extinction ratios above 20 dB in a broad bandwidth larger than 30 nm. The optical switching response has been optimized for TE and TM polarizations by using a homogeneous and a granular VO 2 layer, respectively, with a small impact on the electrical power consumption. The stability and reversibility between switching states showing the possibility of bistable performance is also demonstrated.