Affiliation:
1. NTT Device Innovation Center NTT Corporation 3‐1 Morinosato Wakamiya Atsugi Kanagawa Japan
2. NTT Device Technology Labs. NTT Corporation 3‐1 Morinosato Wakamiya Atsugi Kanagawa Japan
Abstract
AbstractThe authors developed a mirror‐based out‐of‐plane optical coupler (MOOC) for InP photonic integrated circuits (PICs). The coupler has the coupling loss and alignment tolerance comparable to those of a conventional edge coupler. An asymmetric Mach–Zehnder interferometer (a‐MZI) with the MOOC exhibits little wavelength‐dependent loss (WDL) and a high extinction ratio (ER) of >20 dB over 100‐nm wavelength bandwidth. In addition, the temperature‐independent transmittance spectra were obtained. Finally, the authors fabricated a 4‐ch MOOC array with the pitch of 40 μm, which corresponds to the core pitch of practical multi‐core fibre (MCF).
Publisher
Institution of Engineering and Technology (IET)
Subject
Electrical and Electronic Engineering