Open AccessFew-mode frequency-modulated LiDAR receivers
Author(s) -
Alireza Fardoost,
Fatemeh Ghaedi Vanani,
He Wen,
Guifang Li
Publication year - 2020
Publication title -
optics letters/optics index
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.393929
Subject(s) - lidar , ranging , optics , local oscillator , remote sensing , range (aeronautics) , frequency modulation , laser , mode (computer interface) , physics , phase noise , telecommunications , computer science , materials science , radio frequency , geology , composite material , operating system
We present a few-mode frequency-modulated receiver for light detection and ranging (LiDAR). We show that using a few-mode local oscillator (LO) with spatial modes at different frequencies at the receiver can significantly improve the performance of the LiDAR detection range. A preferred receiver architecture features LO modes with unequal frequency separations based on optical orthogonal codes (OOC) to allow range detection via cross correlation. The required signal-to-noise ratio (SNR) for the frequency-modulated continuous wave (FMCW) LiDAR decreases with the number of LO modes. This receiver can have a potential impact in the area of automotive LiDARs.