Title :
Continuously tunable chirped microwave waveform generation using an optically pumped linear chirped fiber Bragg grating
Author :
Li, Ming ; Liu, Weilin ; Yao, Jianping
Author_Institution :
Microwave Photonics Res. Lab., Univ. of Ottawa, Ottawa, ON, Canada
Abstract :
A novel approach to generating a chirped microwave waveform with continuously tunable chirp rate using an optically pumped linearly chirped fiber Bragg grating (LCFBG) based on a temporal interferometer is proposed and demonstrated. A theoretical analysis is performed which is verified by an experiment. A linearly chirped microwave waveform with a tunable chirp rate from 79 to 64 GHz/ns by changing the injection current of the pump laser diode (LD) from 0 to 100 mA is generated.
Keywords :
Bragg gratings; interferometers; optical fibres; semiconductor lasers; waveform generators; continuously tunable chirped microwave waveform generation; optically pumped linear chirped fiber Bragg grating; pump laser diode; temporal interferometer; Chirp; Microwave filters; Optical filters; Optical pulses; Optical pumping; Yttrium barium copper oxide; Er/Yb co-doped fiber; Temporal interferometry; chirped microwave waveform generation; fiber Bragg grating (FBG); linearly chirped fiber Bragg grating (LCFBG);
Conference_Titel :
Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-61284-754-2
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2011.5972650
