[E-10-3] Silica-Based 2×2 Multimode Interference Couplers with Arbitrary Power Splitting Ratio Takashi Saida、Akira Himeno、Masayuki Okuno、Akio Sugita、Katsunari Okamoto (1.NTT Photonics Laboratories) https://doi.org/10.7567/SSDM.1999.E-10-3
