Patent ID: 6807000
Filing Date: 2004-10-19
Classification: H01S,H04B

Abstract:
A gain measurement device for measuring a gain versus wavelength characteristics of an optical amplifier, comprising:a first light source outputting a light having a plurality of wavelengths for using in measurement of a plurality of wavelength points; a second light source outputting a light having a plurality of wavelengths for using in measurement of a plurality of wavelength points other than said plurality of wavelength points; means for selectively leading out one of said output of said first light source and a multiplexed output generated by multiplexing said output of said second light source with said output of said first light source; and measuring means for deriving said gain versus wavelength characteristics of said optical amplifier on the basis of input and output characteristics when the output of said first light source is supplied to said optical amplifier and input and output characteristics when said multiplexed output is supplied to said optical amplifier.