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.
Tsarev
Andrei V
AV
Institute of Semiconductor Physics, Siberian Branch Russian Academy of Sciences, Prospect Lavrenteva, 13, Novosibirsk, 630090, Russia. tsarev@.isp.nsc.ru
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