Optimization of an Er-doped silica glass optical waveguide amplifier

The optical gain performance of a highly Er-doped waveguide amplifier is affected by concentration quenching and cooperative upconversion effects. Based on materials parameters, which were previously determined for Er-doped sodalime-silicate glass, we calculate how the gain performance can be improved by reducing these limiting processes. For amplifiers with an Er concentration exceeding 0.1 at.%, the Er dc-excitation rate is dominated by cooperative upconversion rather than radiative decay or nonradiative decay due to coupling to defects. The effect of lowering the waveguide loss and reducing the optical mode diameter is also demonstrated.

[1]  F. Auzel.  Multiphonon Processes, Cross-Relaxation and Up-Conversion in Ion-Activated Solids, Exemplified By Minilaser Materials , 1980 .

[2]  M.J.F. Digonnet,et al.  Closed-form expressions for the gain in three- and four-level laser fibers , 1990 .

[3]  J. C. Wright.  Up-conversion and excited state energy transfer in rare-earth doped materials , 1976 .

[4]  Polman,et al.  Measuring and modifying the spontaneous emission rate of erbium near an interface. , 1995, Physical review letters.

[5]  Mk Meint Smit,et al.  Upconversion in Er-implanted Al2O3 waveguides , 1996 .

[6]  J. Wang,et al.  Erbium-doped ion-exchanged waveguide lasers in BK-7 glass , 1992, IEEE Photonics Technology Letters.

[7]  Morio Kobayashi,et al.  Amplification in erbium-doped silica-based planar lightwave circuits , 1992 .

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

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

[10]  T. Kitagawa,et al.  Erbium-doped phosphosilicate glass waveguide amplifier fabricated by PECVD , 1993 .

[11]  G. N. van den Hoven,et al.  Optical doping of soda‐lime‐silicate glass with erbium by ion implantation , 1993 .

[12]  L. Ross,et al.  Integrated optical components in substrate glasses , 1989 .

[13]  M. Diemeer,et al.  Computational modeling of diffused channel waveguides using a domain integral equation , 1990 .

[14]  Pieter G. Kik,et al.  Concentration quenching in erbium implanted alkali silicate glasses , 1996 .

[15]  A. J. Bruce,et al.  Concentration and Hydroxyl Impurity Quenching of the 4 I 13/2 – 4 I 15/2 Luminescence in Er 3+ Doped Sodium Silicate Glasses , 1991 .

[16]  J. Shmulovich,et al.  Concentration-dependent /sup 4/I/sub 13/2/ lifetimes in Er/sup 3+/-doped fibers and Er/sup 3+/-doped planar waveguides , 1993, IEEE Photonics Technology Letters.

[17]  Wolfgang Sohler,et al.  Er‐diffused Ti:LiNbO3 waveguide laser of 1563 and 1576 nm emission wavelengths , 1992 .

[18]  Angelantonio Gnazzo,et al.  Spectroscopic properties of Er3+-doped glasses for the realization of active waveguides by ion-exchange technique , 1991, Other Conferences.