%0 Conference Paper %B Conference on Lasers and Electro-Optics %D 2015 %T Asymmetric-waveguide-assisted 3-dB Broadband Directional Coupler %A Lu, Zeqin %A Yun, Han %A Wang, Yun %A Chen, Zhitian %A Zhang, Fan %A Jaeger, Nicolas %A Chrostowski, Lukas %C San Jose, USA %I OSA %V SM1I.8 %X 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. %8 05/2015