Hybrid apparatus of Raman fiber amplifier and semiconductor optical amplifier

摘要

PURPOSE: An apparatus for coupling between Raman optical fiber amplifier and a semiconductor optical amplifier is provided to increase the output by using Raman gain, to increase the performance by lowering the noise index and easily control Raman optical amplifying bandwidth by easily converting the gain bandwidth of the semiconductor amplifier and changing the wavelength of the pump laser diode by controlling the energy gap of the semiconductor, thereby easily obtaining a gain at the new bandwidth not obtained from a conventional erbium doped fiber amplifier(EDFA). CONSTITUTION: An apparatus for coupling between Raman optical fiber amplifier and a semiconductor optical amplifier includes a laser diode chip(201) for generating a laser beam and for illuminating the laser beam for the Raman optical amplification, a wavelength division multiplexing block for passing the signal light inputted thereto and for illuminating the laser light beam illuminated from the laser diode chip(201) in the reverse direction of the inputted signal light and a semiconductor optical amplification chip(216) connected to the laser diode chip(201) and the wavelength division multiplexing block without employing an optical fiver for amplifying the optical signal illuminated from the wavelength division multiplexing block, wherein the laser diode chip(201), the wavelength division multiplexing block and the semiconductor optical amplification chip(216) are packaged into one.