Title :
Uniform Polarization-Dispersion Compensation of All Channels in Highly Birefringent Silicon Nanowire-Based Arrayed Waveguide Grating
Author :
Zou, Jun ; Lang, Tingting ; Wang, Lei ; He, Jian-Jun
Author_Institution :
Centre for Integrated Optoelectron., Zhejiang Univ., Hangzhou, China
Abstract :
A design method for compensating polarization dispersion in arrayed waveguide gratings (AWGs) based on highly birefringent silicon nanowire waveguides is proposed by using angled star couplers in combination with different diffraction orders for TE and TM polarizations. Polarization-dispersion compensation for all output channels is achieved with the maximal polarization-dependent wavelength shift of 0.025 nm in an eight-channel AWG with 200-GHz spacing using 380 nm × 220 nm silicon waveguide with SU-8 upper-cladding.
Keywords :
arrayed waveguide gratings; birefringence; compensation; elemental semiconductors; nanowires; optical fibre couplers; optical fibre dispersion; optical fibre polarisation; silicon; SU-8 upper-cladding; Si; TE polarization; TM polarization; angled star couplers; diffraction orders; highly birefringent silicon nanowire-based arrayed waveguide grating; maximal polarization-dependent wavelength shift; silicon waveguide; size 220 nm; size 380 nm; uniform polarization-dispersion compensation; Arrayed waveguide gratings; Couplers; Diffraction; Dispersion; Silicon; Slabs; Angled star couplers; arrayed waveguide grating (AWG); integrated optics; polarization-dispersion compensation; silicon nanowire;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2169451
