Fabrication and characterization of Yb/sup 3+/:Er/sup 3+/ phosphosilicate fibers for lasers

Fabrication process of efficient Yb/sup 3+/,Er/sup 3+/ codoped phosphosilicate fibers by modified chemical vapor deposition (MCVD) combined with the solution doping technique is studied in detail. We show that the process can be adapted to incorporate low viscosity phosphate glass and some important issues in the fabrication process are discussed. These include the sensitive presintering pass. We also report on the fabrication of a low loss all-glass double clad Yb/sup 3+/:Er/sup 3+/ codoped fiber. We explain how we evaluate the fibers and discuss the effect of the ytterbium to erbium concentration ratio on the laser characteristics. Finally, we present results of some investigations into the mechanisms which can affect the efficiency of the lasers, and show that the detrimental up-conversion from the metastable level of the erbium ions is dramatically reduced by the presence of the ytterbium ions.

[1]  P. Laporta,et al.  Theoretical and experimental analysis of intensity noise in a codoped erbium–ytterbium glass laser , 1998 .

[2]  W H Loh,et al.  Efficient single-frequency fiber lasers with novel photosensitive Er/Yb optical fibers. , 1997, Optics letters.

[3]  D. Hanna,et al.  Lifetime quenching in Yb-doped fibres , 1997 .

[4]  須藤 昭一,et al.  Optical fiber amplifiers : materials, devices, and applications , 1997 .

[5]  David N. Payne,et al.  Role of Aluminum in Ytterbium–Erbium Codoped Phosphoaluminosilicate Optical Fibers , 1996 .

[6]  Jay R. Simpson,et al.  High power Er-Yb linear optical fibre amplifier for CATV applications with gain tilt window over 11 nm and integrated dispersion pre-compensation , 1996 .

[7]  Gérard Monnom,et al.  Clustering effects on double energy transfer in heavily ytterbium–erbium-codoped silica fibers , 1996 .

[8]  U. Hoppe.  A structural model for phosphate glasses , 1996 .

[9]  X. Zou,et al.  Evaluation of spectroscopic properties of Yb3+-doped glasses. , 1995, Physical review. B, Condensed matter.

[10]  J. T. Kringlebotn,et al.  Efficient, low noise grating-feedback fibre laser doped with Er3+:Yb3+ , 1994 .

[11]  É. Maurice.  Phenomenes multiphotoniques dans les fibres optiques de silice dopee terres rares. Application a un capteur de temperature , 1994 .

[12]  M. Monerie,et al.  Modeling of pair-induced quenching in erbium-doped silicate fibers , 1992, IEEE Photonics Technology Letters.

[13]  L. Cohen,et al.  Rare-earth doped optical fibers for temperature sensing , 1992 .

[14]  Kazimierz Jędrzejewski,et al.  Yb3+ sensitised Er3+ doped silica optical fibre with ultrahigh transfer efficiency and gain , 1991 .

[15]  E. R. Taylor,et al.  High-Power Sensitized Erbium Optical Fiber Amplifier , 1991 .

[16]  W. Miniscalco.  Erbium-doped glasses for fiber amplifiers at 1500 nm , 1991 .

[17]  Elias Snitzer,et al.  Fabrication of high-concentration rare-earth doped optical fibers using chelates , 1990 .

[18]  J. Townsend.  The development of optical fibres doped with rare-earth ions , 1990 .

[19]  Jay R. Simpson.  Fabrication Of Rare-Earth Doped Glass Fibers , 1990, Other Conferences.

[20]  M. J. F. Digonnet,et al.  Theory Of Operation Of Three- And Four-Level Fiber Amplifiers And Sources , 1990, Other Conferences.

[21]  Sonja Unger,et al.  A new MCVD technique for increased efficiency of dopant incorporation in optical fibre fabrication , 1990 .

[22]  J. E. Shelby,et al.  Rare‐Earth Aluminosilicate Glasses , 1990 .

[23]  Farhad Hakimi,et al.  DOUBLE CLAD, OFFSET CORE Nd FIBER LASER , 1988 .

[24]  David N. Payne,et al.  Solution-doping technique for fabrication of rare-earth-doped optical fibres , 1987 .

[25]  D. Cronin,et al.  Dependence of the stimulated emission cross section of Yb 3+ on host glass composition , 1983 .

[26]  J. MacChesney,et al.  An overview of the modified chemical vapor deposition (MCVD) process and performance , 1982, IEEE Journal of Quantum Electronics.

[27]  V. A. Fromzel,et al.  BRIEF COMMUNICATIONS: Some characteristics of population inversion of the 4I13/2 level of erbium ions in ytterbium-erbium glasses , 1981 .

[28]  Y. Ohmori,et al.  Spectral loss characteristics of GeO2-P2O5-doped silica graded-index fibres in long-wavelength band , 1979 .

[29]  C. R. Hammond,et al.  Silica based binary glass systems — refractive index behaviour and composition in optical fibres , 1977 .

[30]  George W. Scherer,et al.  Sintering of Low-Density Glasses: I, Theory , 1977 .