Fabien Roy

A simple dynamic polarization mode dispersion compensator

We experimentally validate at 10 Gbit/s a new and simple polarization-mode dispersion compensator based on the dynamic maximization of the degree of polarization. First-order compensation is demonstrated and ultimate statistical performance is numerically assessed.

Noise and gain band management of thulium-doped fiber amplifier with dual-wavelength pumping schemes

Three dual-wavelength pumping schemes (1550 nm + 1064, 1047, or 1400 nm) have been experimentally assessed for the thulium-doped fiber amplifier in terms of power and noise performance. It is shown that 1047- and 1550-nm pumping gives a better power performance than 1064- and 1550-nm pumping at fixed gain peak wavelength (GPW). In addition, the most efficient pumping scheme appears to be 1400- and 1550-nm pumping for GPW higher than 1475 nm, and 1047 and 1550 nm for lower GPW. Noise figures lower than 6 db (with -5-dBm signal input power) are exhibited regardless the pumping schemes (although a 0.8-dB increase is reported for the 1400- and 1550-nm pumping).

Recent advances in thulium-doped fiber amplifiers

Summary form only given. Presents a comparison between different pumping schemes implemented within fluoride doped fibers. The first part deals with the performances of different up-conversion pumps. In the second part, the advantages and drawbacks of several ground state pump wavelengths are discussed. The dual-wavelength-pumping schemes have led to huge efficiency improvement (up to 50%), with regard to noise performances and the band location for WDM systems. These results make the thulium-doped fiber amplifier (TDFA) one of the most serious amplifying devices for future WDM systems.

Novel pumping schemes for thulium doped fiber amplifier

With 1064 nm pumping, 5 dB extra gain is exhibited, and with a two-wavelengths pumping, 5 nm gain broadening and 16 nm gain shifting are experimentally shown for the thulium doped fluoride fiber amplifier.

Optimal pumping schemes for gain-band management of thulium-doped fiber amplifiers

It is shown that, used in conjunction with 1550-nm pumping, 1047-nm pumping is more suitable to operate the TDFA in the short wavelength band while 1400-nm pumping is more efficient for the long wavelength band.

Spectral hole burning measurement thulium-doped fiber amplifiers

An accurate technique was implemented to measure spectral hole burning in rare-earth amplifiers at room temperature, showing that thulium-doped fiber amplifiers exhibit hole depths four times lower than those of C -band erbium-doped fiber amplifiers.

Spectroscopic studies of tm doped glasses for s-band amplifiers

We present a spectroscopic background in order to optimize Tm doped S-band Optical fluoride fiber amplifiers.We measure the excited state absorption spectra between 1 and 1.5 µm and discussed the choice of amplifier pump wavelengths.

Spectral hole burning measurement in the thulium-doped fiber amplifier

An accurate technique was implemented in order to measure the spectral hole burning in rare-earth amplifiers at room temperature, showing that TDFA exhibits hole depths four times lower compared to C-band EDFAs.