Rapid Linear Frequency Swept Frequency-Modulated Continuous Wave Laser Source Using Iterative Pre-Distortion Algorithm
نویسندگان
چکیده
We present a simple iterative pre-distortion algorithm for achieving rapid linear frequency sweep of semiconductor lasers. The achieves the desired swept linearity with only four iterations. derive general formula by establishing relationship between laser output and drive current. frequency-swept source obtained this can be used in FMCW LiDAR systems. Experimentally, we investigated using 1550 nm distributed feedback (DFB) laser, excursion 30.26 GHz, slope 504 THz/s. analyzed results fourth iteration, less than 5 MHz root mean square (RMS) value nonlinearity.
منابع مشابه
Frequency noise in frequency swept fiber laser.
This Letter presents a measurement of the spectral content of frequency shifted pulses generated by a lightwave synthesized frequency sweeper. We found that each pulse is shifted in frequency with very high accuracy. We also discovered that noise originating from light leaking through the acousto- optical modulators and forward propagating Brillouin scattering appear in the spectrum.
متن کاملradiation pattern analysis of frequency diversity array based on square frequency modulated continuous wave
according to high costs of phase shifters in antenna arrays, new methods for beam steering without phase shifter were introduced. frequency diverse array (fda) concept is another approach to beam steering problem. in this structure, the subsequent antenna elements are fed with stepped discrete frequencies causing continuous scanning of space in time. so a range-angle dependent scanning is made ...
متن کاملNonlinearly broadened phase-modulated continuous-wave laser frequency combs characterized using DPSK decoding.
9.953 GHz phase-modulated continuous-wave laser combs are spectrally broadened via nonlinear propagation in normal and anomalous dispersion media and experimentally characterized using a differential phase shift keying (DPSK) decoder. DPSK bit-error rate data are in qualitative agreement with radio-frequency spectrum analyzer measurements.
متن کاملMaximum-likelihood estimation for frequency-modulated continuous-wave laser ranging using photon-counting detectors.
We analyze the minimum achievable mean-square error in frequency-modulated continuous-wave range estimation of a single stationary target when photon-counting detectors are employed. Starting from the probability density function for the photon-arrival times in photodetectors with subunity quantum efficiency, dark counts, and dead time, we derive the Cramér-Rao bound and highlight three importa...
متن کاملUsing a discrete thermal model to obtain a linear frequency ramping in a frequency-modulated continuous-wave system
Daniel Nordin Kalevi Hyyppä Luleå University of Technology EISLAB SE-971 87, Luleå, Sweden E-mail: [email protected] Abstract. The lasing wavelength of a single-section distributed feedback DFB laser diode can be modulated by modulating the drive current. This makes it possible to utilize the DFB laser diode in a frequencymodulated continuous wave FMCW range and velocity measuring system...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Remote Sensing
سال: 2022
ISSN: ['2315-4632', '2315-4675']
DOI: https://doi.org/10.3390/rs14143455