ELECTRIC OPTICAL POLYMER FOR WAVELENGTH DIVISION MULTIPLEXING OPTICAL COMMUNICATION NETWORK, HIGH SPEED TUNABLE SELECTING FILTER USING MULTI-GRATING AND OPERATING METHOD THEREOF

摘要

PURPOSE: An electric optical polymer for a wavelength division multiplexing optical communication network, a high speed tunable selecting filter using multi-grating and their operating method are provided to enable implementation of a dense wavelength division multiplexing based optical communication and be used for an optical information storing device technique utilizing an optical refraction. CONSTITUTION: An optical waveguide(103) collects a plurality of lights made incident to a single mode. A Bragg grating unit passes only a light of a desired wavelength among the plurality of lights made incident along the optical waveguide(103) and reflects the remaining lights along the optical waveguide(103) to emit them externally. A proceeding waveform electrode(105) changes a region of a Bragg grating reflection wave by an electro-optical effect and transmits or reflects a specific wavelength selectively. A TEC(106) tunes the wavelength of the whole bragg reflection wave by using a heat optical effect of a polymer.