Rapid Linear Frequency Swept Frequency-Modulated Continuous Wave Laser Source Using Iterative Pre-Distortion Algorithm

Li, Peng1; Zhang, Yating1; Yao, Jianquan1,2

2022-07-01

10.3390/rs14143455

REMOTE SENSING   Impact Factor & Quartile

2072-4292

We present a simple iterative pre-distortion algorithm for achieving a rapid linear frequency sweep of semiconductor lasers. The algorithm achieves the desired frequency swept linearity with only four iterations. We derive a general formula for iterative pre-distortion by establishing the relationship between the laser output frequency and the drive current. The linear frequency-swept laser source obtained by this algorithm can be used in FMCW LiDAR systems. Experimentally, we investigated the algorithm using a 1550 nm distributed feedback (DFB) laser, achieving frequency swept excursion of 30.26 GHz, and frequency swept slope of 504 THz/s. We analyzed the linearity of the frequency swept results for the fourth iteration, achieving less than 5 MHz root mean square (RMS) value of frequency swept nonlinearity.

iterative pre-distortion FMCW LiDAR frequency swept nonlinearity zero crossings method

SCI ; EI

English

Others

National Key Research and Development Program of China["2021YFB2800703","2017YFA0700202"] ; National Natural Science Foundation of China["61735010","91838301"] ; Basic Research Program of Shenzhen[JCYJ20170412154447469]

Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology

Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology

WOS:000833672900001

MDPI

20223612695572

Distributed feedback lasers ; Frequency modulation ; Iterative methods ; Optical radar ; Semiconductor lasers

Radar Systems and Equipment:716.2 ; Optical Devices and Systems:741.3 ; Lasers, General:744.1 ; Semiconductor Lasers:744.4.1 ; Numerical Methods:921.6

Web of Science

1.Tianjin Univ, Sch Precis Instrument & Optoelect Engn, Minist Educ Optoelect Informat Technol, Key Lab, Tianjin 300072, Peoples R China
2.South Univ Sci & Technol China, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China

Li, Peng,Zhang, Yating,Yao, Jianquan. Rapid Linear Frequency Swept Frequency-Modulated Continuous Wave Laser Source Using Iterative Pre-Distortion Algorithm[J]. REMOTE SENSING,2022,14(14).

Li, Peng,Zhang, Yating,&Yao, Jianquan.(2022).Rapid Linear Frequency Swept Frequency-Modulated Continuous Wave Laser Source Using Iterative Pre-Distortion Algorithm.REMOTE SENSING,14(14).

Li, Peng,et al."Rapid Linear Frequency Swept Frequency-Modulated Continuous Wave Laser Source Using Iterative Pre-Distortion Algorithm".REMOTE SENSING 14.14(2022).