Analysis and suppression of nonlinear frequency modulation in an optical frequency-domain reflectometer.
A new method for monitoring the nonlinearities perturbing the optical frequency sweep in high speed tunable laser sources is presented. The swept-frequency monitoring system comprises a Mach-Zehnder interferometer and simple signal processing steps. It has been implemented in a coherent optical frequency domain reflectometer which allowed to drastically reduce the effects of nonlinear sweep, resulting to a spatial resolution enhancement of 30 times.
Yuksel
Kivilcim
K
Faculty of Engineering, Mons, Electromagnetism and Telecommunication Department, Mons, Belgium. kivilcim.yuksel@fpms.ac.be
Wuilpart
Marc
M
Mégret
Patrice
P