Optical fiber based optical radiation modulation device

An optical radiation modulation device, comprising:

• a plurality of optical fibers arranged optically in parallel;
• a first coupler coupled with the plurality of optical fibers, the first coupler being operable to receive a single-wavelength optical radiation and to provide or distribute the single-wavelength optical radiation to the plurality of optical fibers;
• and
• a second coupler optically coupled with the plurality of optical fibers, the second coupler being operable to receive optical radiations outputted by the plurality of optical fibers;
• wherein the plurality of optical fibers comprise:
• a first optical fiber operable to modulate the single-wavelength optical radiation provided or distributed to the first optical fiber to generate a multi-wavelength optical radiation for output to the second coupler;
• and
• a second optical fiber.