K. Kikuchi, K. Tsuzuki, S. Kamei, S. Yamanaka, S. Asakawa, T. Itoh, Y. Nasu, K. Takeda, K. Honda, Y. Kawamura, M. Jizodo, Masayuki Takahashi, M. Usui, H. Mawatari, T. Saida
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Silicon-photonics-based coherent optical subassembly (COSA) for ultra-compact coherent transceiver
We actualized a silicon photonics (SiPh)-based coherent optical subassembly (COSA) with a compact and low-height package for the next-generation transceiver form factors. We integrated optical functions required for transmitting and receiving digital coherent optical signals into a single SiPh chip. The COSA is applicable to 100-Gbps dual-polarization quadrature phase shift keying and 200Gbps dual polarization 16-quadrature amplitude modulation transmissions.