Patent ID: 7421164

Claim:
A method for fabricating a laser having an optical fiber Bragg grating as a front mirror of external resonator comprising: preparing an optical fiber including the optical fiber Bragg grating formed at a region thereof, and a ferrule provided with a cylindrical free space penetrating both ends thereof; applying a first thermal epoxy resin to a partial region of the outer cylindrical surface of the other region of the optical fiber, at which the optical fiber Bragg grating is not formed; inserting the optical fiber into the ferrule so that the region of the optical fiber at which the optical fiber Bragg grating is formed and the region of the optical fiber to which the first thermal epoxy resin is applied are located in the cylindrical free space of the ferrule; fixing the optical fiber to the ferrule by curing the first thermal epoxy resin; optically coupling one end of the optical fiber, fixed to the ferrule, and a light source; preparing a tube provided with a cylindrical free space penetrating both ends thereof; filling the cylindrical free space of the tube with a second thermal epoxy resin, and applying yet a third thermal epoxy resin to one end of the tube; inserting the other end of the optical fiber, connected to the light source, into the tube so that the end of the tube to which the third thermal epoxy resin is applied and one end of the ferrule are bonded; and fixing the optical fiber to the inside of the tube and fixing the tube and the ferrule to each other by curing the second and third thermal epoxy resins.