New compact polarization rotator in anisotropic LiNbO3 graded-index waveguide.
The new compact polarization rotator in anisotropic graded index Ti:LiNbO(3) channel waveguide is proposed and investigated by 3D beam propagation method (BPM). Device is based on a channel optical waveguide directed at small angle (about 5 degrees) with respect to Z-axis on Y-cut lithium niobate substrate. The polarization conversion from quasi-TE to quasi-TM guided modes (and backwards) along 8 mm long waveguide with an index contrast 0.015, has been numerically demonstrated. Device is intended for polarization diversity of integrated optic elements based on LiNbO(3) structures.
Institute of Semiconductor Physics, Siberian Branch Russian Academy of Sciences, Prospect Lavrenteva, 13, Novosibirsk, 630090, Russia. tsarev@.isp.nsc.ru
Andrei V
AV
Tsarev
D016880:Anisotropy; D001718:Birefringence; D003460:Crystallization / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D009556:Niobium / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods
D010087:Oxides; D009556:Niobium; C091692:lithium niobate