Patent ID: 7322752

Claim:
An optical device module of an optical receptacle structure, comprising: a stub ferrule arranged to guide a laser light to an optical fiber to be connected thereto; a sleeve arranged to hold an optical-connector ferrule of said optical fiber to be connected to said stub ferrule; a sleeve cover to cover said sleeve, a holder fixing said stub ferrule and said sleeve, wherein said sleeve and said sleeve cover are formed by a ceramic material; wherein said sleeve is a slot sleeve, and said slot sleeve is mounted in a semi-fixed manner in relation to said holder, said sleeve cover and said stub ferrule; wherein said holder is provided with a groove for fixing said stub ferrule and said sleeve cover by press-fitting and for mounting said slot sleeve in a semi-fixed manner, and said holder is formed by a metallic material and has the same thermal expansion coefficient as that of said sleeve cover; and an adapter arranged to connect said holder to an optical module.