Patent ID: 8192094

Claim:
An optical module, comprising: a housing including a groove part formed along an inner peripheral surface of the housing; and a receptacle received in the housing, the receptacle to which an optical connector having an optical fiber is connected, the receptacle including a first stub part, a stub brim part and a second stub part formed in this order from a head end side of the receptacle in a body of the receptacle, the brim part having an outer diameter greater than an outer diameter of the first stub part, the second stub part having an outer diameter greater than the outer diameter of the first stub part and smaller than the outer diameter of the brim part wherein an elastic body and the brim part are provided in the groove part, the elastic body is configured to adhere to and hold the first stub part relative to the groove part, an empty piercing hole is formed in the elastic body, and an external height H of the elastic body before compression is greater than a height h of the groove part (H>h), an external width W of the elastic body before compression is greater than a width w of the groove part (W>w), and a diameter d of the empty piercing hole formed in the elastic body is smaller than an external diameter D of the receptacle (d<D).