Title :
A tnnable electro-optic microwave photonic filter based on photonic crystal for 60GHz radio over fiber system
Author :
Guansheng Shen ; Nannan Wu ; Zheng Guo ; Yanhong Zhang ; Jian Zhou ; Huiping Tian ; Yuefeng Ji
Author_Institution :
State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
A tunable microwave photonic filter (MPF) employing dynamic modulation based on silicon-on-insulator (SOI) is presented. With low group velocity and low loss photonic crystal structure, the novel MPF with a length about 50 μm is proposed for 60-GHz ROF system. The modulation sensitivities are about 45/V for group index, 22.5GHz/V for free spectral range (FSR), while the device size is only 1.21% as the traditional fiber ring resonator. The extinction ratio of the MPF is about 10 dB, along with the 4.02GHz 3dB bandwidth, and the requirement of received data´s signal-to-noise ratio (SNR) can be reduced by 9 dB for the 10-7 bit-error ratio (BER).
Keywords :
electro-optical filters; microwave filters; microwave photonics; photonic crystals; radio-over-fibre; ROF system; dynamic modulation; extinction ratio; fiber ring resonator; free spectral range; frequency 60 GHz; group index; group velocity; modulation sensitivities; photonic crystal structure; radio over fiber system; signal-to-noise ratio; silicon-on-insulator; tunable electro-optic microwave photonic filter; Microwave communication; Microwave filters; Microwave photonics; Optical fiber filters; Optical ring resonators; Resonator filters; Microwave Photonic Filter; Microwave Photonics; Photonic Crystal; Radio over Fiber (RoF);
Conference_Titel :
Optical Communications and Networks (ICOCN), 2013 12th International Conference on
Conference_Location :
Chengdu
DOI :
10.1109/ICOCN.2013.6617223
