Patent ID: 6795233
Filing Date: 2004-09-21
Classification: G02F,H01S

Abstract:
A cross-gain modulation type optical wavelength converter converting the optical wavelength of a probe light outputted from a continuous wave light source by using an intensity-modulated pump light, comprising:an optical division unit for dividing the intensity-modulated pump light into first pump light and second pump light on a basis of a predetermined light intensity ratio; a first control unit for detecting an intensity of the first pump light and controlling an intensity of the probe light outputted from the continuous wave light source in proportion to the detected intensity of the first pump light; a first semiconductor optical amplifier for performing a cross-gain modulation by using the first pump light and first converting the wavelength of the probe light outputted from the continuous wave light source on a basis of the cross-gain modulation; a second control unit for controlling an intensity of the first wavelength-converted probe light outputted from the first semiconductor optical amplifier in proportion to an intensity of the second pump light; and a second semiconductor optical amplifier for performing a cross-gain modulation by using the second pump light and second converting the wavelength of the first wavelength-converted probe light intensity-controlled by the second control unit on a basis of the cross-gain modulation.