在自制的光纤熔融拉锥工艺设备上研制成功的单、多模光纤定向耦合器,工作在光纤通信的实用波段(0.8～1.5μm),具有插损极低(<0.1～0.5dB)、同端隔离度高(>40dB)、体积小、工作稳定可靠,成本低、与光纤系统兼容,结构紧凑等特点。该单、多模光纤定向耦合 A series of single-mode and multi-mode optical fiber directional couplers are successfully developed in the homemade optical fiber taper processing equipment. They work in the practical optical fiber communication band (0.8 ~ 1.5μm) with extremely low insertion loss (<0.1 ~ 0.5dB) High end isolation (> 40dB), small size, stable and reliable, low cost, compatible with optical fiber system, compact structure and so on. The single and multimode fiber directional coupling