Jared C. Mikkelsen, Wesley D. Sacher, Joyce K. S. Poon. Silicon ridge waveguide directional couplers with improved tolerance to wafer-scale variations. In Optical Fiber Communications Conference and Exhibition, OFC 2014, San Francisco, CA, USA, March 9-13, 2014. pages 1-3, IEEE, 2014. [doi]
Abstract is missing.