Phase-preserving amplitude regeneration in a Mamyshev regenerator with group-delay-managed nonlinear medium and mid-stage optical phase conjugation. - Cheng Guo; Hamed Rabbani; Mohammad Awwad; Youichi Akasaka; Paparao Palacharla; Ryuichi Sugizaki; Shigehiro Takasaka; Michael Vasilyev (OFC, 2025)