Patent ID: 6381066
Filing Date: 2002-04-30
Classification: H01S

Abstract:
A semiconductor optical amplifier system, comprising:a package; an optical bench within the package; a first fiber pigtail entering the package to connect to the bench and terminate above the bench to supply an input optical signal; a second fiber pigtail entering the package to connect to the bench and terminate above the bench to receive an amplified optical signal; a semiconductor optical amplifier chip connected to the bench that converts the input optical signal into the amplified optical signal; a first isolator installed on the bench between a termination of the first fiber pigtail and the semiconductor optical amplifier chip for suppressing back-reflections; a first lens installed on the bench between the first isolator and a termination of the first fiber pigtail for improving the collimation of light emitted from the termination of the first fiber pigtail; a second lens installed on the bench between the first isolator and the semiconductor optical amplifier chip for coupling light being emitted from the first isolator into the semiconductor optical amplifier chip; a second isolator installed on the bench between a termination of the second fiber pigtail and the semiconductor optical amplifier chip for suppressing back-reflections; a third lens installed on the bench between the second isolator and the semiconductor optical amplifier chip for coupling light that is emitted from the semiconductor optical amplifier chip into the second isolator; and a fourth lens installed on the bench for coupling light exiting from the second isolator into the second fiber pigtail.