| 摘要 |
<P>PROBLEM TO BE SOLVED: To ensure stable excited light output from an excited light source including a multiplexer for an optical amplifier even when the polarization state changes due to external factors, such as the state of a fiber and ambient temperature. <P>SOLUTION: An excited light output device includes: excited light sources 11, 12 for emitting excited light with different polarization states; drive means 21, 22 for controlling the excited light output from the excited light sources; polarizing and synthesizing means 15 for polarizing and synthesizing excited light beams outputted from the excited light sources; polarized light passing means 17 for passing polarized light that is a part of the light emitted from the polarizing and synthesizing means and has the same polarization state as that of the excited light emitted by the excited light sources; and light receiving means 18 for receiving the polarized light having passed the polarized light passing means. The drive means controls the excited light outputs from the excited light sources on the basis of the output from the light receiving means. <P>COPYRIGHT: (C)2013,JPO&INPIT |
