| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical pulse tester which stabilizes the output power of an optical pulse and an optical power stabilizing method for an optical pulse tester regardless of use environment and change over time. <P>SOLUTION: The improved optical pulse tester emits an optical pulse toward an optical fiber under measurement by a laser element, receives the return light of the optical pulse by a light receiving element, and measures the optical fiber under measurement through the output of the light receiving element. The optical pulse tester includes: built-in optical fibers provided between the laser element and the optical fiber under measurement; a light receiving element setting means for setting the multiplication factor of the light receiving element with a predetermined period; a comparison value holding means for holding the optical power of the return light of the internal optical fiber with the multiplication factor set by the light receiving element setting means; and a laser element setting means which compares the optical power of the comparison value holding means to the optical power newly determined with the multiplication factor of the receiving element setting means and changes the optical power of the optical pulse emitted by the laser element. <P>COPYRIGHT: (C)2010,JPO&INPIT |
