Effect of ion concentration on slow light propagation in highly doped erbium fibers

The effect of ion density on slow light propagation enabled by coherent population oscillations has been experimentally investigated for highly doped erbium fibers at room temperature. We found that fractional delay increases with ion density. A saturation effect in the fractional delay has been observed for doping levels above ∼3150 ppm. Ultra-high ion concentration can simultaneously increase the fractional delay and the bandwidth of the signals. We have studied the propagation of Gaussian pulses along the fibers obtaining fractional delays up to 0.7 for the highest doping levels used. It is shown that pulse power can be used as a control parameter to reduce distortion at different pulse bandwidths.

[1]  Lipo Wang,et al.  Negative group delay and pulse compression in superluminal pulse propagation , 2003 .

[2]  Robert W Boyd,et al.  Observation of ultraslow light propagation in a ruby crystal at room temperature. , 2003, Physical review letters.

[3]  F. Priolo,et al.  Cooperative upconversion in erbium-implanted soda-lime silicate glass optical waveguides , 1995 .

[4]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[5]  Harris,et al.  Electromagnetically induced transparency: Propagation dynamics. , 1995, Physical review letters.

[6]  C. Chang-Hasnain,et al.  Slow-light in semiconductor quantum wells , 2004, InternationalQuantum Electronics Conference, 2004. (IQEC)..

[7]  Robert W. Boyd,et al.  Superluminal and Slow Light Propagation in a Room-Temperature Solid , 2003, Science.

[8]  Ultraslow light propagation in an inhomogeneously broadened rare-earth ion-doped crystal. , 2005, Physical review letters.

[9]  Edward S. Fry,et al.  ULTRASLOW GROUP VELOCITY AND ENHANCED NONLINEAR OPTICAL EFFECTS IN A COHERENTLY DRIVEN HOT ATOMIC GAS , 1999, quant-ph/9904031.

[10]  Harris,et al.  Dispersive properties of electromagnetically induced transparency. , 1992, Physical review. A, Atomic, molecular, and optical physics.

[11]  Valeriy V. Yashchuk,et al.  NONLINEAR MAGNETO-OPTICS AND REDUCED GROUP VELOCITY OF LIGHT IN ATOMIC VAPOR WITH SLOW GROUND STATE RELAXATION , 1999 .

[12]  Nasser N Peyghambarian,et al.  Cooperative upconversion and energy transfer of new high Er 3+ - and Yb 3+ –Er 3+ -doped phosphate glasses , 2000 .

[13]  R. Boyd,et al.  Observation of a spectral hole due to population oscillations in a homogeneously broadened optical absorption line , 1983 .

[14]  U. Peschel,et al.  Simple and accurate procedure for modeling erbium-doped waveguide amplifiers with high concentration , 2000, Journal of Lightwave Technology.

[15]  M S Shahriar,et al.  Observation of ultraslow and stored light pulses in a solid. , 2001, Physical review letters.

[16]  A C Selden,et al.  Pulse transmission through a saturable absorber , 1967 .

[17]  Robert W. Boyd,et al.  Observation of superluminal and slow light propagation in erbium-doped optical fiber , 2005 .

[18]  Jefferson L. Wagener,et al.  Evidence and modeling of paired ions and other loss mechanisms in erbium-doped silica fibers , 1993, Other Conferences.

[19]  S. Harris,et al.  Light speed reduction to 17 metres per second in an ultracold atomic gas , 1999, Nature.

[20]  Philip Hemmer,et al.  Tunable ultraslow light in vertical-cavity surface-emitting laser amplifier. , 2005, Optics express.

[21]  Shun Lien Chuang,et al.  Room-temperature slow light with semiconductor quantum-dot devices. , 2006, Optics letters.

[22]  Robert W. Boyd,et al.  Applications of Slow Light in Telecommunications , 2006 .