With the wide application of EDFA(Erbium-Doped Fiber Amplifier) in ROADM, silicon photonics, and DCI high-speed connection, it has promoted the development of EDFA to become more miniaturized and integration. HYC has been engaged in the research and manufacture of optical passive devices for more than 20 years, always focusing on technology accumulation and innovation, with six core technical capabilities, and can provide customers with seven major solutions. In order to meet the needs of EDFA (Erbium-Doped Fiber Amplifier) applications, HYC has recently launched hybrid series product for the miniaturized EDFA. The product line includes 980/1550nm IWDM Hybrid (Isolator+WDM), GFF (Gain Flattening Filter), IGFF (Isolator + GFF), etc..