An electro-optic polymer semiconductor integrated circuit includes one or more doped regions configured to drive one or more electrodes, and the electrodes are configured to drive a juxtaposed electro-optic core. There are data packets belonging to a first data flow, herein called high priority data flow, and data packets belonging to a second data flow, herein called low priority data flow. Some embodiments use a plurality of protruding fiber guides for guiding and managing the optical fiber.