A drawer structure, etc. of an optical fiber from an optical module is disclosed. An optical fiber drawer structure is configured by a roughly cylindrical passage through which an optical fiber passes being connected to a housing. The passage includes a sleeve connected to an outer periphery of the housing and a lid part connected to a tip side of the sleeve. The interior of the passage (sleeve) is provided with a fixing member to fix the optical fiber to the passage. A reduced diameter part and an expanded diameter part are formed in the lid part.