The present invention is to provide an optical module in which factors influencing the optical coupling between the semiconductor optical device and the optical fiber may be reduced. The optical module of the present invention includes a ferrule having first and second regions arranged in this order, and an optical fiber secured in the center of the ferrule. The second region of the ferrule provides an end surface of the ferrule, where the tip of the core is exposed thereto, and a mounting surface where the semiconductor optical device is mounted thereon to optically couple with the core of the optical fiber.