REfly203激光光源是用于光通信、光传输、光纤传感等领域中的科研、生产和工程常用仪表，既可以作为单模光纤的测量又可以应用于多模光纤的测量。是测量衰减变化范围大、要求功率和波长十分稳定的科研和生产部门的理想仪表。采用FP-LD激光器做为发光器件，具有输出功率大、输出功率和波长稳定性好等优点。REfly203 Handle Optical Light Source is an essential instrument for field or laboratory testing of optical communication which can be used with an optical power meter for measuring optical loss on Single-mode or Multi-mode fiber cable.It features compact size,high output power,stable output and exaellent wavelengthstability.