| 摘要 |
<p>Control of laser output or alarm control is conducted by operating a first measured temperature measured by a first temperature sensor provided to a fiber connection part and a second measured temperature measured by a second temperature sensor provided to a member different from the fiber connection part so that a false application of a laser beam to the fiber connection part or to a member near the fiber connection part may be detected. It can be correctly judged whether or not an increase in the first measured temperature is due to a false application of the laser beam, thus reducing erroneous operation by control means.</p> |
