| 摘要 |
PURPOSE:To reduce the influence of multi-reflection to optical pulse, and prevent crosstalk between sensors. CONSTITUTION:Respective sensors 53-1, 53-2,... and reference fibers 54-1, 54-2,... are separated from each other, and the sensing light and the reference light are reflected by the sensors and the reference fibers, and the reflected light are combined to be transmitted to a photo detecting means 60 through a transmitting and receiving coupler 42 inside of a pulse generation means 40. Influence of multi-reflection to the optical pulse is thereby reduced. |
