Numerical Modeling of S-Band EDFA Based on Distributed Fiber Loss

A numerical model for the analysis and design of S-band erbium-doped fiber amplifiers has been developed. The model is able to accurately predict the amplifier performances by taking into account the amplified spontaneous emission suppression due to the bending, as well as leakage losses of the fiber used as active medium. The model has been validated by comparing numerical and experimental data of bending loss, amplifier gain, and noise figure of an S-band optical amplifier based on a depressed-cladding erbium-doped fiber. A good agreement has been verified by varying fiber bending radius, input signal power, and wavelength. The model has been then applied to the optimization of the amplifier performances for wavelength-division multiplexer applications. The numerical results show that 20-25 dB gain can be achieved over a 25-30 nm range centered in a different part of the S-band from 1460 to 1525 nm, just by changing the bending radius and the length of a depressed-cladding fiber.

[1]  Jake Bromage,et al.  S-band erbium-doped fiber amplifiers for WDM transmission between 1488 and 1508 nm , 2003, OFC 2003 Optical Fiber Communications Conference, 2003..

[2]  K. Thyagarajan,et al.  Segmented-clad fiber design for tunable leakage loss , 2005, Journal of Lightwave Technology.

[3]  Luca Vincetti,et al.  Complex FEM modal solver of optical waveguides with PML boundary conditions , 2001 .

[4]  Luca Vincetti,et al.  Leakage properties of photonic crystal fibers. , 2002, Optics express.

[5]  D. Gloge,et al.  Propagation Effects in Optical Fibers , 1975 .

[6]  Stefano Selleri,et al.  Modal analysis of rib waveguide through finite element and mode matching methods , 2001 .

[7]  S. Selleri,et al.  S-band depressed-cladding erbium-doped fiber amplifier with double-pass configuration. , 2006, Optics letters.

[8]  R. Arradi,et al.  All silica S-band double-pass erbium-doped fiber amplifier , 2005, IEEE Photonics Technology Letters.

[9]  W. J. Chung,et al.  S+C bands amplification in a distributed Er-doped Raman fiber , 2005, IEEE Photonics Technology Letters.

[10]  S. Selleri,et al.  All-silica double-pass S?C?L band EDFA , 2007 .

[11]  C. R. Giles,et al.  Modeling erbium-doped fiber amplifiers , 1991 .

[12]  M.A. Arbore,et al.  Application of fundamental-mode cutoff for novel amplifiers and lasers , 2005, OFC/NFOEC Technical Digest. Optical Fiber Communication Conference, 2005..

[13]  Fernando L. Teixeira,et al.  General closed-form PML constitutive tensors to match arbitrary bianisotropic and dispersive linear media , 1998 .

[15]  S. Selleri,et al.  Confinement loss and nonlinearity analysis of air-guiding modified honeycomb photonic bandgap fibers , 2006, IEEE Photonics Technology Letters.

[16]  K. Thyagarajan,et al.  S-band single-stage EDFA with 25-dB gain using distributed ASE suppression , 2004, IEEE Photonics Technology Letters.

[17]  M. Zoboli,et al.  Analysis of erbium-doped waveguide amplifiers by a full-vectorial finite-element method , 1993 .

[18]  Yasuhide Tsuji.  Complex Modal Analysis of Curved Optical Waveguides Using a Full-Vectorial Finite Element Method with Perfectly Matched Layer Boundary Conditions , 2004 .

[19]  S. Chi,et al.  120-nm bandwidth erbium-doped fiber amplifier in parallel configuration , 2004, IEEE Photonics Technology Letters.

[20]  T. Kane,et al.  34dB gain at 1500nm in S-band EDFA with distributed ASE suppression , 2002, 2002 28TH European Conference on Optical Communication.

[21]  David J. Richardson,et al.  Understanding bending losses in holey optical fibers , 2003 .

[22]  J.F. Martins-Filho,et al.  TDFA/Raman hybrid amplifiers covering the entire S-band pumped by a single laser , 2005, IEEE Photonics Technology Letters.

[23]  Stefano Selleri,et al.  S-band EDFA with ASE suppression induced by bending loss of depressed-cladding active fiber , 2005 .