US 6,807,000 B2 · Gain measurement device for optical amplifier and method thereof

Abstract

The present invention provides a gain measurement device for an optical amplifier and measurement method therefore enable continuous measurement at high speed and high precision with quite simple construction. The device includes a first light source outputting a light 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 the former wavelength points, means for selectively leading out one of the output of the first light source and a multiplexed output of the outputs from the first and second sources, and measuring means for deriving the gain versus wavelength characteristics of the optical amplifier on the basis of input and output characteristics when the output of the first light source is supplied to the optical amplifier and input and output characteristics when the multiplexed output is supplied to the optical amplifier.

Claims11

Dependent claims

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.

2 more elements

A gain measurement method for measuring a gain versus wavelength characteristics of an optical amplifier, comprising:

step of supplying a light having a plurality of wavelengths for using in measurement of a plurality of wavelength points from a first light source to an input of said optical amplifier;
step of multiplexing an output light from said first light source and an output light having a plurality of wavelengths from a second light source for using in measurement of wavelength points other than the wavelength points to be measured in connection with the light of said first light source to supply a multiplexed output to the input of said optical amplifier;
and
measuring step of 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.

1 more element

Dependencies are inferred from the claim text.

Gain measurement device for optical amplifier and method thereof

Life of this patent

Gain measurement device for optical amplifier and method thereof

Life of this patent

Abstract

Claims11