Eoptolink has releases  QSFP28 100G SR4  transceiver PN: EOLQ-851HG-02  designed for use in 100 Gigabit Ethernet links over multimode fiber.

They are compliant with the QSFP28 MSA and IEEE 802.3bm 100GBASE-SR4 and CAUI-4. Digital diagnostics functions are available via the I2C  interface, as specified by the QSFP28 MSA. For samples, questions, please, contact with us.