Title :
Wide dynamic range Doppler-shift compensation for space-borne optical communications
Author :
Svec, Christopher B. ; Shay, T.M.
Author_Institution :
New Mexico State Univ., Albuquerque, NM, USA
Abstract :
We model and demonstrate a novel concept for the Doppler-shift compensation of optical transmitters. Optical frequency offset locking is demonstrated using a simple Fabry-Perot laser diode transmitter and a frequency-lock loop. Our system simultaneously demonstrates a continuous tracking range of 21 GHz and a tracking speed of 44 THz/s. The transmitter frequency is adjusted over the entire 21-GHz range by merely adjusting the frequency of a microwave oscillator.
Keywords :
Doppler shift; compensation; frequency locked loops; laser frequency stability; laser tuning; optical links; optical tracking; optical transmitters; space communication links; Doppler-shift compensation; Fabry-Perot laser diode transmitter; continuous tracking range; deep space communications; frequency stability; frequency synthesizers; frequency-lock loop; laser communications systems; optical frequency offset locking; optical transmitters; spaceborne optical communications; wide dynamic range compensation; Artificial satellites; Diode lasers; Doppler shift; Dynamic range; Frequency locked loops; Laser tuning; Optical fiber communication; Optical transmitters; Optical tuning; Tracking loops;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.818931
