Abstract
We report a broadband polarization-independent wavelength conversion by reducing the dispersion discrepancy between the fundamental transverse electric (TE) and transverse magnetic (TM) modes in a silicon nanowire waveguide, through optimizing of the waveguide geometry. The size of the waveguide is optimized to () to ensure that the TE and TM zero-dispersion wavelengths locate at , and the group velocity dispersion difference between the TE and TM modes is less than in the wavelength range of 1300–1800 nm. Based on an angled-polarization pumped four-wave mixing scheme, a 1 dB polarization-independent bandwidth of 400 nm is achieved in a 0.8 cm-long optimized waveguide when the pump is set at 1553 nm. The tolerance to the pump angle detuning is also strengthened in the optimized waveguide.
©2012 Optical Society of America
Full Article | PDF ArticleMore Like This
Minhao Pu, Hao Hu, Christophe Peucheret, Hua Ji, Michael Galili, Leif K. Oxenløwe, Palle Jeppesen, Jørn M. Hvam, and Kresten Yvind
Opt. Express 20(15) 16374-16380 (2012)
Qiang Liu, Shiming Gao, Zhiqiang Li, Yanqiao Xie, and Sailing He
Appl. Opt. 50(9) 1260-1265 (2011)
Zijun Xu, Qiang Jin, Zhihua Tu, and Shiming Gao
Appl. Opt. 57(18) 5036-5042 (2018)