Apparatus and method for shaping optical waveform

An optical waveform shaping apparatus comprising:

• a multiplexer/demultiplexer (D/MUX) unit to demultiplex an optical signal in which optical signals of a plurality of wavelengths are multiplexed;
• a micro lens system to refract the demultiplexed optical signal into a collimated beam of light;
• and
• a wavelength level controller unit to shape a waveform of the optical signal, and
• wherein the wavelength level controller unit comprises a 2D LcoS (Liquid Crystal on Si) for adjusting an amplitude or a phase value of the demultiplexed optical signal to have a distribution that is desired for each cell and reflecting the adjusted optical signal, and a controller for controlling the distribution;
• wherein the D/MUX unit includes:
• a first D/MUX part to separate an optical multi-channel signal into a plurality of wavelength bands and to output the separated optical multi-channel signal;
• and
• a second D/MUX part in which a plurality of D/MUXs respectively corresponding to the plurality of wavelength bands are stacked in layers in a same wafer, and
• wherein each of the D/MUXs divides and outputs the optical multi-channel signal of each wavelength band for each wavelength.