Tunable Multimode Optical Delay Line for Single-Wavelength Microwave Photonic Transversal Filter

Liu, Xiaojuan1,2; Mididoddi, Chaitanya K.1; Tan, Zhongwei3; Wang, Guoqing1; Shao, Liyang4; Wang, Chao1

10.1109/MWP.2018.8552882

2018

978-1-5386-5227-5

2018 INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS (MWP)

1-4

22-25 Oct. 2018

Toulouse, France

345 E 47TH ST, NEW YORK, NY 10017 USA

IEEE

Most existing microwave photonic transversal filters are implemented in the incoherent regime using multiple optical carrier wavelengths to avoid optical interference. The system therefore becomes complicated and expensive. In this work, we present a novel single-wavelength microwave photonics transversal filter design in the coherent regime using a single multimode fibre. Filter taps are generated from spatial modes excited by multiple narrow optical beams with different incident angles. Therefore, optical interference is eliminated due to space demultiplexing. Time delays between filter taps are obtained due to large modal dispersion and can be simply tuned using spatial slots. In a proof-of-concept experiment, a modal dispersion enabled optical delay line module for a two-tap microwave photonic transversal filter has been demonstrated with avoided optical interference.

microwave photonic filter modal dispersion multimode fibre optical interference time delay

其他

英语

CPCI-S ; EI

Royal Society[IE170007]

Optics

Optics

WOS:000455180000042

20190306394786

Dispersion (waves) ; Fiber optic sensors ; Light interference ; Microwave filters ; Microwaves ; Multimode fibers ; Photonics ; Time delay

Electric Filters:703.2 ; Electromagnetic Waves:711 ; Electronic Circuits:713 ; Light/Optics:741.1 ; Fiber Optics:741.1.2

Web of Science

1.Univ Kent, Sch Engn & Digital Arts, Canterbury CT2 7NT, Kent, England
2.Shandong Univ Technol, Sch Phys & Optoelect Engn, Zibo 255049, Peoples R China
3.Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China
4.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China

Liu, Xiaojuan,Mididoddi, Chaitanya K.,Tan, Zhongwei,et al. Tunable Multimode Optical Delay Line for Single-Wavelength Microwave Photonic Transversal Filter[C]. 345 E 47TH ST, NEW YORK, NY 10017 USA:IEEE,2018:1-4.