@article { lu2015c, title = {Wideband silicon photonic polarization beamsplitter based on point-symmetric cascaded broadband couplers}, journal = {Optics Express}, volume = {23}, year = {2015}, month = {11/2015}, pages = {29413-29422}, abstract = {We design and demonstrate a wideband silicon photonic polarization beamsplitter on a silicon-on-insulator platform. The device consists of two 3 dB broadband couplers cascaded in a point-symmetric network. The transverse electric (TE) and transverse magnetic (TM) modes are coupled to different output ports due to a large difference between their coupling strengths. The device exhibits large isolation at both the two output ports, of more than 20 dB over a large bandwidth of 125 nm, and a small excess loss, of less than 0.5 dB for the entire C-band.}, URL = {https://www.osapublishing.org/oe/abstract.cfm?uri=oe-23-23-29413}, author = {Zeqin Lu and Yun Wang and Fan Zhang and Nicolas A. F. Jaeger and and Lukas Chrostowski} }