Youopto 2.5G Series is a 2.5Gbps transmitter optical subassembly(TOSA) integrating a high speed DFB laser,a micro-TEC, thermistor,a monitor photodiode in a 8PIN TO60 coaxial package. It is designed for use in small form-factor pluggable transceivers and other types of optical modules for high-speed telecommunication and data applications。