Title :
A compact silicon-on-insulator polarization splitter
Author :
Kiyat, I. ; Aydinli, A. ; Dagli, N.
Author_Institution :
Dept. of Phys., Bilkent Univ., Ankara, Turkey
Abstract :
A compact directional coupler-based polarization splitter is designed and realized using silicon-on-insulator (SOI) waveguides. Even though silicon does not have any material birefringence, the high index contrast obtained in the SOI platform and reduced waveguide dimensions makes it possible to induce significant birefringence. Polarization splitting is achieved by making use of this geometry-induced birefringence. We demonstrate polarization splitting in devices as short as 120 μm. Even smaller devices can be made using submicron-thick Si waveguides.
Keywords :
birefringence; integrated optics; light polarisation; optical beam splitters; optical design techniques; optical directional couplers; optical waveguides; refractive index; silicon-on-insulator; 120 mum; SOI waveguides; Si; compact polarization splitter; directional coupler; geometry-induced birefringence; high index contrast; polarization splitting; silicon-on-insulator; submicron-thick Si waveguides; Birefringence; Directional couplers; Integrated optics; Optical attenuators; Optical polarization; Optical signal processing; Optical waveguides; Samarium; Silicon on insulator technology; Tellurium; Birefringence; directional couplers; integrated optics; polarization splitters; silicon-on-insulator (SOI) technology;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.838133
