Title :
Microwave Bandpass Filter Based on Air-Core Photonic Bandgap Fiber Loop Mirror
Author :
Yu, Xianbin ; Zheng, Xiaoping ; Zhang, Hanyi
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing
Abstract :
An all-optical microwave bandpass filter employing air-core photonic bandgap fiber (PBGF) based loop mirror is proposed and experimentally demonstrated. A segment of 20 m air-core PBGF is used in the experiment. The frequency response with negative coefficient is realized and can be tuned by changing the incident optical wavelength because of the wavelength-dependent high-birefringence of PBGF. When the input wavelength varies from 1566 nm to 1584 nm, the differential group delay (DGD) of PBGF changes from 30ps to 110 ps, therefore, the free-spectral range (FSR) of the proposed filter changes correspondingly from 33 GHz to 9.6 GHz
Keywords :
band-pass filters; birefringence; holey fibres; microwave filters; microwave photonics; mirrors; optical fibre filters; optical materials; photonic band gap; photonic crystals; 1566 to 1584 nm; 20 m; 30 to 110 ps; 33 to 9.6 GHz; DGD; FSR; PBGF; air-core photonic bandgap fiber loop mirror; differential group delay; free-spectral range; frequency response; incident optical wavelength; microwave bandpass filter; microwave photonics; negative coefficient; wavelength-dependent high-birefringence; Band pass filters; Intensity modulation; Microwave filters; Mirrors; Optical fiber filters; Optical fiber polarization; Optical filters; Optical modulation; Phase modulation; Photonic bandgap fibers; Microwave photonics; bandpass filter; high-birefringence fiber loop mirror; photonic bandgap fiber;
Conference_Titel :
Microwave Photonics, 2006. MWP '06. International Topical Meeting on
Conference_Location :
Grenoble
Print_ISBN :
1-4244-0203-4
Electronic_ISBN :
1-4244-0204-2
DOI :
10.1109/MWP.2006.346552
