| http://www.w3.org/ns/prov#value | - While the multi-wavelength optical batch amplification apparatus described hereinabove with reference to FIG. 18 is constructed such that the pumping light output power of the pumping laser diode 22 is controlled to control the output powers of the component optical signals of the output optical signal so that they may be fixed equally, it may be modified in such a manner as seen in FIG. 22.
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