Analysis of dual-stage erbium-doped fibre amplifiers with passive equalisation filters

The gain and noise properties of dual-stage gain flattened erbium doped fibre amplifiers (EDFA) are analysed. Simple expressions are derived to aid the design and understanding of the dual-stage EDFAs. Simulation is also carried out to determine the behaviour of EDFAs when subject to different operating parameters. It is found that a dual-stage EDFA incorporating an equalisation filter, variable attenuator and gain control makes it ideal for use as an on-line optical amplifier in WDM networks.

[1]  Raman Kashyap,et al.  Wavelength flattened saturated erbium amplifier using multiple side-tap Bragg gratings , 1993 .

[2]  R. A. Lobbett,et al.  1480 nm pumped erbium doped fibre amplifier with all optical automatic gain control , 1994 .

[3]  A.A.M. Saleh,et al.  Modeling of gain in erbium-doped fiber amplifiers , 1990, IEEE Photonics Technology Letters.

[4]  Raman Kashyap,et al.  Wideband gain flattened erbium fibre amplifier using a photosensitive fibre blazed grating , 1993 .

[5]  N. Jackman,et al.  Fiber-amplifier cascades with gain equalization in multiwavelength unidirectional inter-office ring networks , 1993, IEEE Photonics Technology Letters.

[6]  B. Landousies,et al.  Theoretical study of the gain equalization of a stabilized gain EDFA for WDM applications , 1997 .

[7]  J.-M.P. Delavaux,et al.  Multi-stage erbium-doped fiber amplifier designs , 1995 .

[8]  T. Kominato,et al.  A 100-channel optical FM six-stage in-line amplifier system employing tunable gain equalizers , 1993, IEEE Photonics Technology Letters.

[9]  Pascal Bernage,et al.  Gain control in erbium-doped fibre amplifiers by lasing at 1480 nm with photoinduced Bragg gratings written on fibre ends , 1993 .

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

[11]  J. Baran,et al.  Flattening of erbium-doped fibre amplifier gain spectrum using an acousto-optic tunable filter , 1993 .

[12]  M. J. O'Mahony,et al.  Properties of gain controlled erbium doped fibre amplifiers by lasing , 1995 .

[13]  M. Zirngibl.  Gain control in erbium-doped fibre amplifiers by an all-optical feedback loop , 1991 .

[14]  R. Laming,et al.  Erbium-doped fiber amplifier with flattened gain spectrum , 1991, IEEE Photonics Technology Letters.

[15]  D N Payne,et al.  Gain cross saturation and spectral hole burning in wideband erbium-doped fiber amplifiers. , 1991, Optics letters.