Stable operation of microwave photonic filters constructed with two cascaded Hi-Bi fibers

For the microwave photonic filters constructed with two cascaded Hi-Bi fibers, we demonstrate theoretically and experimentally a new technique that uses a dual- or tri-wavelength spacing-tunable laser source to greatly suppress the sensitivity of the filter response to environmental perturbations without the introduction of the phase-induced intensity noise. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 207–212, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24844