The present invention relates to the technical field of optical modules, and provides a DML-based high-speed PAM4 optical transceiver module. The optical transceiver module comprises an interface unit, a PAM4 standard conversion unit, a DML optical transmitting. When discussing optical transceiver parameters, modulation schemes are a key consideration, and the transmitter modulation method is specified in the datasheet of some optical modules, as shown in the figures below: • The transmitter laser modulation mode is marked as EML in the Moduletek 25G ER. 10GHz Directly Modulated Laser Module, 1550 or 1310nm, DML The directly-modulated laser (DML) is a cost-effective solution for 10Gbps digital transmission of up to 60 km using traditional intra-city SMF-28 single-mode fiber links. Or It is also suited for analog fiber transmission. The package. Market Forecast By Form Factor (QSFP, QSFP+, QSFP-DD, and QSFP28, SFP+ and SFP28, SFF and SFP, CFP, CFP2, and CFP4, CXP, XFP), By Application (Telecommunication (Ultra-long-haul Network, Long-haul Network, Metro Network), Data Center (Data Center Interconnect, Intra-Data Center Connection). Optical transceiver module designed for 10G-EPON OLT, unique 1577nm DML laser technology, high optical power, low power consumption. Optical transceiver module. Laser technology is the most expensive part of an optical transceiver, roughly 50% of the module's total cost. Picking the wrong one means you're either overpaying or underperforming, so it's worth understanding what each type actually does well. 2Gbps Quad Small Form-factor Pluggable QSFP+ module for use in 40GBASE Ethernet. QSFP+ LX4 provides 40Gb/s throughput up to 150 meters/2km over OM3 multi-mode fiber (MMF) / single-mode fiber (SMF) using 1271nm, 1291nm, 1311nm.