To provide a switchable optical fiber device for fiber transmission system and a component for the same.
This optical fiber device is composed of a 1st fiber 12 for transmitting the light of a certain wavelength and a loop-shaped fiber 18 for transmitting the light of a certain wavelength and the loop-shaped fiber is connected through an optical switch 20 of the 1st fiber between on terminal and the other terminal of the 1st fiber. When the switch is turned on, an optical path to be communicated from the 1st fiber to the loop-shaped fiber and to be in communication along the 1st fiber again is selectively supplied, and when the switch is turned off, an optical fiber to be communicated along the 1st fiber but not in communication to the loop-shaped fiber is selectively supplied, so that switchable operating characteristics can be provided.
HALL DOUGLAS W
YADLOWSKY MICHAEL
