Abstract

We report on the thermal treatment of photodarkened Yb-doped fiber samples. The method of non-isothermal bleaching at different temperature ramp rates can be used to determine the thermal energy distribution of photodarkening induced color centers. A distributed activation energy with a mean value of about 1.3 eV and a FWHM of 0.5 eV was found. Spectral changes during thermal treatment were observed and could be interpreted, e.g. as an enhancement of the absorption cross section.

© 2009 OSA

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    [CrossRef]
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2009

2008

2007

1994

T. Erdogan, V. Mizrahi, P. J. Lemaire, and D. Monroe, “Decay of ultraviolet-induced fiber Bragg gratings,” J. Appl. Phys. 76(1), 73–80 (1994).
[CrossRef]

Aberg, D.

Barmenkov, Y. O.

A. D. Guzman Chávez, A. V. Kir’yanov, Y. O. Barmenkov, and N. N. Il’ichev, “Reversible photo-darkening and resonant photobleaching of ytterbium-doped silica fiber at in-core 977 nm and 543 nm irradiation,” Laser Phys. Lett. 4(10), 734–739 (2007).
[CrossRef]

Basu, C.

Bello Doua, R.

Boullet, J.

Boyland, A. J.

Cardinal, T.

Engholm, M.

Erdogan, T.

T. Erdogan, V. Mizrahi, P. J. Lemaire, and D. Monroe, “Decay of ultraviolet-induced fiber Bragg gratings,” J. Appl. Phys. 76(1), 73–80 (1994).
[CrossRef]

Ermeneux, S.

Guillen, F.

Guzman Chávez, A. D.

A. D. Guzman Chávez, A. V. Kir’yanov, Y. O. Barmenkov, and N. N. Il’ichev, “Reversible photo-darkening and resonant photobleaching of ytterbium-doped silica fiber at in-core 977 nm and 543 nm irradiation,” Laser Phys. Lett. 4(10), 734–739 (2007).
[CrossRef]

Honkanen, S.

Hotoleanu, M.

Il’ichev, N. N.

A. D. Guzman Chávez, A. V. Kir’yanov, Y. O. Barmenkov, and N. N. Il’ichev, “Reversible photo-darkening and resonant photobleaching of ytterbium-doped silica fiber at in-core 977 nm and 543 nm irradiation,” Laser Phys. Lett. 4(10), 734–739 (2007).
[CrossRef]

Jetschke, S.

Kir’yanov, A. V.

A. D. Guzman Chávez, A. V. Kir’yanov, Y. O. Barmenkov, and N. N. Il’ichev, “Reversible photo-darkening and resonant photobleaching of ytterbium-doped silica fiber at in-core 977 nm and 543 nm irradiation,” Laser Phys. Lett. 4(10), 734–739 (2007).
[CrossRef]

Kirchhof, J.

Koplow, J. P.

Koponen, J.

Laurila, M.

Leich, M.

Lemaire, P. J.

T. Erdogan, V. Mizrahi, P. J. Lemaire, and D. Monroe, “Decay of ultraviolet-induced fiber Bragg gratings,” J. Appl. Phys. 76(1), 73–80 (1994).
[CrossRef]

Manek-Hönninger, I.

Mizrahi, V.

T. Erdogan, V. Mizrahi, P. J. Lemaire, and D. Monroe, “Decay of ultraviolet-induced fiber Bragg gratings,” J. Appl. Phys. 76(1), 73–80 (1994).
[CrossRef]

Monroe, D.

T. Erdogan, V. Mizrahi, P. J. Lemaire, and D. Monroe, “Decay of ultraviolet-induced fiber Bragg gratings,” J. Appl. Phys. 76(1), 73–80 (1994).
[CrossRef]

Montiel i Ponsoda, J. J.

Nilsson, J.

Norin, L.

Payne, D.

Podgorski, M.

Röpke, U.

Sahu, J. K.

Salin, F.

Schwuchow, A.

Söderlund, M. J.

Sones, C.

Unger, S.

Yoo, S.

Appl. Opt.

J. Appl. Phys.

T. Erdogan, V. Mizrahi, P. J. Lemaire, and D. Monroe, “Decay of ultraviolet-induced fiber Bragg gratings,” J. Appl. Phys. 76(1), 73–80 (1994).
[CrossRef]

Laser Phys. Lett.

A. D. Guzman Chávez, A. V. Kir’yanov, Y. O. Barmenkov, and N. N. Il’ichev, “Reversible photo-darkening and resonant photobleaching of ytterbium-doped silica fiber at in-core 977 nm and 543 nm irradiation,” Laser Phys. Lett. 4(10), 734–739 (2007).
[CrossRef]

Opt. Express

Opt. Lett.

Other

J. Jasapara, M. Andrejco, and D. DiGiovanni, “Effect of heat and H2 gas on the photo-darkening of Yb3+ fibers,” in Conference of Lasers and Electro-Optics CLEO Technical Digest (OSA,2006), CTuQ5.

A. V. Shubin, M. V. Yashkov, M. A. Melkumov, S. A. Smirnow, I. A. Bufetov, and E. M. Dianov, “Photodarkening of aluminosilicate and phosphosilicate Yb-doped fibers”, in Conf. Digest of CLEO Europe-EQEC2007, CJ3–1-THU.

M. J. Söderlund, J. J. Montiel i Ponsoda, and S. Honkanen, “Measurement of thermal binding energy of photodarkening-induced color centers in ytterbium-doped silica fibers,” in Conference on Lasers and Electro-Optics-European Quantum Electronics Conference CLEO/EUROPE-EQEC (OSA2009), CE3.3.

C. Basu, S. Yoo, A. J. Boyland, A. S. Webb, C. L. Sones, and J. K. Sahu, “Influence of temperature on the post-irradiation temporal loss evolution in ytterbium-doped aluminosilicate fibers, photodarkened by 488 nm CW irradiation”, in Conference on Lasers and Electro-Optics-European Quantum Electronics Conference CLEO/EUROPE-EQEC (OSA2009), CJ1.2.

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Figures (5)

Fig. 1
Fig. 1

Experimental setup for temporal (SCFs as dashed lines) and spectral (SCFs as solid lines) measurements of photodarkening and thermal annealing.

Fig. 3
Fig. 3

(a) Development of the PD loss during tempering with constant rates r and (b) calculated run of p(T) after the separation of the bleaching process.

Fig. 2
Fig. 2

Change of the PD loss spectrum by thermal bleaching of a fiber pre-darkened at 296 K; dashed line: probe wavelength used in temporal measurements.

Fig. 4
Fig. 4

Thermal activation energy E A of PD induced color centers for different combinations of r.

Fig. 5
Fig. 5

(a) Gaussian distributions for the activation energy of PD induced color centers for different combinations of ramp rates; (b) pre-exponential factor in dependence on p.

Equations (5)

Equations on this page are rendered with MathJax. Learn more.

α(T)=f(T)×p(T),
dpdt=dpdTr=-pk0exp(-EAkBT)
EA=kBT1T2T2T1ln(r2r1[d  pd  T]2/[d  pd  T]1)
EA(p)=b2invErf[12p]+a
δEAEAEAkBT12δΔTln(r2/r1).

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