Title :
Modulation-dependent limits to intensity-noise suppression in microwave-photonic links
Author :
Darcie, Thomas E. ; Moye, Amol
Author_Institution :
Univ. of Victoria, BC, Canada
Abstract :
Cancellation of common-mode intensity noise in microwave-photonic links is found to be limited by the applied intensity modulation. A model is developed and verified experimentally for the dependence of the maximum noise suppression on modulation index, for two-tone and multichannel modulation. For example, for a root-mean-square modulation index of 0.3, suppression is limited to 5 dB.
Keywords :
intensity modulation; microwave photonics; optical modulation; optical noise; intensity-noise suppression; microwave-photonic links; modulation index; multichannel modulation; two-tone modulation; Detectors; Intensity modulation; Optical attenuators; Optical fibers; Optical filters; Optical losses; Optical modulation; Optical noise; Optical transmitters; Stimulated emission; Analog links; balanced detector; intensity-noise suppression; microwave-photonic links (MWPLs); spur-free dynamic range;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.856416
