Device operation inspection apparatus in optical fiber communication system, has optical attenuator with optical fiber cords, to adjust damping factor by varying space between other end of connection portion and device

摘要

A pair of optical-fiber cords (4,5) originating from either ends of an optical attenuator (6) are connected to one end of connection portion (3). The optical attenuator adjusts the damping factor by varying the space between other end of the connection portion and light emission portion of a device (2). An Independent claim is included for optical attenuator.