| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To monitor and measure a measuring object over a distant and wide range. <P>SOLUTION: Light is made to get incident from a light source 17 into FBG sensors 10-13 for detecting a strain, a temperature and the like, via a photo-demultiplexer 18, a wavelength of the light reflected by the FBG sensors 10-13 is measured by a reflected wavelength measuring instrument 19, and the measured wavelength is monitored by a personal computer 27 connected to the wavelength measuring instrument 19. In the monitoring, a light amplifier 21 is provided between the photo-demultiplexer 18 and the wavelength measuring instrument 19 to amplify the reflected light. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
