Open AccessEr-doped fiber comb with enhanced f_ceo S/N ratio using Tm:Ho-doped fiber
Author(s) -
Yunseok Kim,
YoungJin Kim,
Seungman Kim
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.018606
Subject(s) - supercontinuum , materials science , optics , frequency comb , photonic crystal fiber , dispersion shifted fiber , doping , interferometry , fiber , polarization maintaining optical fiber , optoelectronics , wavelength , optical fiber , fiber optic sensor , physics , laser , composite material
We report that the Tm:Ho-doped fiber can be utilized to improve the frequency stabilization of the Er-doped fiber comb. This rare-earth doped fiber provides photon absorption at 1.2 microm and 1.7 microm wavelengths together with emission at wavelengths between 1.8 microm to 2.1 microm. This unique combination of the absorption and emission regions constructively redistributes the spectral power of the supercontinuum generated by a highly nonlinear fiber to detect the carrier-envelope-offset frequency (f(ceo)) via a self-referencing f-2f interferometer. As a result, the signal to noise (S/N) ratio of the detected f(ceo) signal increases by 10 dB, thereby increasing the potential of enhancing the long-term frequency stability of the fiber frequency comb.