an optoelectronic transmission device includes an optical signal source , a light detector , a solar cell unit , and a power storage unit . the reflector covers the light detector and the optical signal source . the reflector is configured to internally totally reflect first light emitted from the optical signal source to a first optical fiber and reflect a first part of the second light from a second optical fiber to the light detector and reflect a second part of the second light to the solar cell unit . the light detector receives and converts the first part of the second light into electrical signals . the solar cell unit receives and coverts the second part of the second light into electrical energy . the power storage unit is electrically connected to the solar cell unit for storing the electric energy . the power storage unit powers the light detector and the optical signal source .