| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical attenuator which is small-sized and superior in mass-productivity. SOLUTION: Optical fibers 11a and 13a are arranged opposite each other and a reflection unit 20 which has reflecting surfaces M1 and M2 is provided between them. Light from the optical fiber 11a is reflected by the reflecting surface M1 of the reflection unit 20 and reflected by a tilt mirror 26a to make incident on the optical fiber 13a through the reflecting surface M2. The quantity of light incident on the optical fiber 13a varies with the angle of the tilt mirror 26a, so an attenuation quantity is continuously varied. COPYRIGHT: (C)2004,JPO |
