@inproceedings { zqlu2015b, title = {Asymmetric-waveguide-assisted 3-dB Broadband Directional Coupler}, journal = {Conference on Lasers and Electro-Optics}, volume = {SM1I.8}, year = {2015}, month = {05/2015}, publisher = {OSA}, organization = {OSA}, address = {San Jose, USA}, abstract = {We demonstrate 3-dB broadband directional couplers that use asymmetricwaveguide- based phase compensation. Average coupling ratios of 46.57% and 48.28% were obtained from 1500 nm to 1600 nm for transverse electric and transverse magnetic modes, respectively.}, author = {Zeqin Lu and Han Yun and Yun Wang and Zhitian Chen and Fan Zhang and Nicolas A. F. Jaeger and Lukas Chrostowski} }