Open AccessPolarization rotator based on silicon wire waveguides
Author(s) -
Hiroshi Fukuda,
Koji Yamada,
Tai Tsuchizawa,
T. Watanabe,
Hiroyuki Satō,
S. Itabashi
Publication year - 2008
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.002628
Subject(s) - polarization rotator , extinction ratio , materials science , optics , silicon , polarization (electrochemistry) , optical rotation , planar , fabrication , waveguide , optoelectronics , physics , birefringence , wavelength , chemistry , medicine , computer graphics (images) , alternative medicine , pathology , computer science
We describe a polarization rotator based on an off-axis double-core structure consisting of a silicon wire waveguide and a silicon-oxinitride waveguide. The rotator can be made by planar fabrication technology and do not require complex processes, such as three-dimensional structure formation. A rotator with 35-microm long provides the polarization rotation angle of 72 degrees and the polarization extinction ratio of 11 dB with the excess loss of about 1 dB. Our polarization rotator represents a significant step towards accomplishing an optical circuit with polarization diversity based on silicon wire waveguides.