Open AccessShifted dispersion‐induced RF‐fading based continuously tunable optoelectronic oscillator
Author(s) -
Li Liwei,
Paolino Liana,
Yi Xiaoke,
Huang Thomas
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.1733
Subject(s) - fading , optoelectronics , radio frequency , dispersion (optics) , materials science , electronic engineering , optics , physics , telecommunications , computer science , engineering , decoding methods
A new continuously tunable optoelectronic oscillator based on shifted dispersion‐induced RF‐fading is proposed and experimentally demonstrated. The design provides wideband continuously all‐optical tunability by incorporating the shifted RF‐fading based on a Mach‐Zehnder structure in an optoelectronic feedback loop. By simply varying the path difference between the two arms of the Mach‐Zehnder configuration via an adjustable variable delay line, the fundamental frequency of the oscillator can achieve extremely high and continuous tuning with a frequency upper bound dependent on the delay properties of the variable optical delay line.