| 摘要 |
In an optical device manufacturing method according to the present invention, a metal film is formed on a side surface of a bare fiber, a film is formed on an end face of the bare fiber, and, thereafter, the bare fiber is inserted into a ferrule until the end face of the bare fiber on which the film was formed is protruded from an end face of the ferrule, and then, the bare fiber is secured to the ferrule. In an optical device according to the present invention, a bare fiber having a side surface on which a metal film was formed is inserted into and secured to a ferrule, and an end face of the bare fiber is protruded from an end face of the ferrule, and a distance L between the end faces satisfies a relationship L<4xd (outer diameter of the bare fiber), and a film is formed on the end face of the bare fiber.
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