Abstract
Fabry-Pérot etalons may generate large dispersion near the resonant wavelength. It has been recently shown that the amount of the anomalous dispersion induced by the optimized etalon could be sufficient to balance the normal dispersion of a fiber laser cavity [1], Gires-Toumois interferometers, i.e. etalon operating in reflection, exhibit, however, loss increase near the resonant wavelength. For this reason, the etalon operating in reflection near the resonant wavelength would make the mode-locking difficult to achieve and should employ additional wavelength selective elements, e.g. optical filters to enforce the laser operation with low cavity dispersion. This feature can be avoided by using the Fabry-Pérot etalon in transmission. In this geometry, the spectral range with the cavity-enhanced dispersion corresponds to the high-transmission regime of the etalon.
© 2007 IEEE
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