DUAL WAVELENGTH OPTICAL FIBER LASER, A PHOTONIC MICROWAVE NOTCH FILTER, AND A METHOD FOR VARYING NOTCH FREQUENCY, CAPABLE OF VARYING WAVELENGTH GAP BETWEEN TWO LIGHTS OSCILLATED BASED ON THE TRANSFORMED DEGREE OF A TRANSFORMER

摘要

PURPOSE: A dual wavelength optical fiber laser, a photonic microwave notch filter, and a method for varying notch frequency are provided to vary the frequency of a microwave notch in a frequency response feature by regulating the time delay of two lights.;CONSTITUTION: A transformer(200) applies different strains to a first optical fiber grid(210) and a second optical fiber grid(212). The first optical fiber grid reflects light with first wavelength based on the strain of the transformer. The second optical fiber grid reflects light with second wavelength based on the strain of the transformer. Resonators(110, 112, 114) are in optical connection with the transformer and resonates the light with the first wavelength and the light with the second wavelength.;COPYRIGHT KIPO 2011