Microwave Photonic Filter Using Optical True-Time-Delay Line Matrix

Abstract

. 현재까지 제안된 MWP 필터의 구조는 광섬유 격자 배 열(Fiber Bragg Grating: FBG)을 이용하는 방식 [3] , FBG와 이진 광섬유 지연선로를 이용한 방식 [4] , 다채널 첩 광섬 유 격자(Chirped Fiber Grating: CFG)를 이용한 방식 AbstractMicrowave Photonic(MWP) filters capable of use a bandpass filter or a notch filter with large bandwidth have been proposed. 4-lines×2-bit fiber-optic delay lines with a unit time-delay difference of 50 ps were experimentally realized. By changing the time-delay difference and the coefficients of microwave-modulated optical signals, the bandpass and notch filters were implemented and characterized.