The invention relates to a transmitter module comprising a casing (1) which according to the invention encloses a cavity (10) so that it is hermetically tight. Said cavity (10) contains several solid-state lasers (2) and said casing (1) has several optical connecting wave guides (3) which are fixed in said casing (1) in a hermetically tight way. Each of said optical connecting wave guides (3) optically interconnects a laser (2) in said cavity (10) to a fiber leading on from the casing (1) outside, one laser and one fiber being interconnected per optical connecting wave guide.
