Investigation of EDFA power transients in circuit-switched and packet-switched optical networks

0044 English OPEN
Muhyaldin, Siham;

Erbium-doped fibre amplifiers (EDFA’s) are a key technology for the design of all optical communication systems and networks. The superiority of EDFAs lies in their negligible intermodulation distortion across high speed multichannel signals, low intrinsic losses, slow ... View more
  • References (93)
    93 references, page 1 of 10

    2 Gain dynamic model of the EDFA 64 2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 2.2 Erbium-doped fibre amplifier basics . . . . . . . . . . . . . . . . . . . . . 65 2.3 Gain dynamics model of single EDFA . . . . . . . . . . . . . . . . . . . . 71 2.4 EDFA dynamics model for OSNR investigation . . . . . . . . . . . . . . . 73 2.5 Properties of EDFAs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 2.6 Pump configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 2.7 Fibre lengths and geometries . . . . . . . . . . . . . . . . . . . . . . . . . 86 2.8 EDFA effects on the dynamic phenomena in optical networks . . . . . . . . 88 2.9 Numerical simulation techniques . . . . . . . . . . . . . . . . . . . . . . . 91 2.10 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

    4 Effect of Poisson traffic on EDFA transients 133 4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 4.2 Traffic types and models . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 4.2.1 Poisson distribution traffic model . . . . . . . . . . . . . . . . . . 134 4.3 Impact of the Poisson traffic on the power transients of the EDFA . . . . . . 136 4.3.1 Simulation parameters . . . . . . . . . . . . . . . . . . . . . . . . 136 4.3.2 Results and analysis . . . . . . . . . . . . . . . . . . . . . . . . . 137 4.3.2.1 Power transient numerical analysis . . . . . . . . . . . . 138 4.3.2.2 Power transient statistical analysis . . . . . . . . . . . . 140 4.4 Power transients at small signal power . . . . . . . . . . . . . . . . . . . . 145 4.4.1 Simulation parameters . . . . . . . . . . . . . . . . . . . . . . . . 145 4.4.2 Results and analysis . . . . . . . . . . . . . . . . . . . . . . . . . 145 4.4.2.1 Numerical analysis of the power transients . . . . . . . . 146 4.4.2.2 Statistical analysis of power transients . . . . . . . . . . 148 4.5 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

    6 Effect of power transients on optical receiver 196 6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196 6.2 Investigation of power and OSNR transients in cascades of EDFAs for optical networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 6.2.1 Analysis of OSNR transients in EDFAs chain . . . . . . . . . . . . 199 6.2.2 Effect of power and OSNR transients of cascaded EDFAs on the optical receiver for WDM networks . . . . . . . . . . . . . . . . . 205 6.2.3 Effect of the abrupt input power on the power and OSNR transients in the EDFAs chain . . . . . . . . . . . . . . . . . . . . . . . . . . 207 6.3 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

    7 Gain Locking System for EDFA in WDM Optical Networks 212 7.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212 7.2 PID controller for the EDFA . . . . . . . . . . . . . . . . . . . . . . . . . 213 7.3 Simulation parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 7.4 Numerical simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216 7.5 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234

    8 Conclusions and future work 238 8.1 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238 8.2 Future work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 B Appendix 265 B.1 Basic model parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265 B.1.1 Absorption and emission cross sections . . . . . . . . . . . . . . . 265 B.1.2 Amplified spontaneous emission(ASE) . . . . . . . . . . . . . . . 266 B.1.3 Overlap factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266 B.1.4 Lifetimes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266 B.1.5 Line-width and broadening . . . . . . . . . . . . . . . . . . . . . . 267 B.2 Gain model of EDFA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267 B.3 Gain dynamic model of EDFA . . . . . . . . . . . . . . . . . . . . . . . . 268 B.4 1 dB increase-time/decrease-time of OSNR . . . . . . . . . . . . . . . . . 271 [84] A. Bahrampoura, M. Mahjoeib, and A. Rasoulib, “A theoretical analysis of the effects of erbium ion pair on the dynamics of an optical gain stabilized fiber amplifier ,” Optics Communications, vol. 265, pp. 283-300, September 2006.

    [86] R. M. Jopson and A. A. M. Saleh, “Modeling of Gain and Noise in Erbium-doped fiber Amplifier,” in Fiber Laser Sources and Amplifiers III, Proceeding SPIE, vol. 1581, pp. 114-119, 1991.

    [87] T. Goerges and E. Delevaque, “Analytic Modelling of High-Gain Erbium-Doped Fiber Amplifiers,” Optics letters, vol. 14, pp. 1113-1115, August 1992.

    [88] L. B. A. Bononi and L. A. Rusch, “Using SPICE to simulate gain dynamics in dopedfiber amplifier chains,” presented at OFC '98, workshop 204, Transmission modelling simulation tools, San Jose, CA, 1998.

    [89] A. Rieznik, “Analytical solution for the dynamic behavior of erbium-doped fiber amplifiers with constant population inversion along the fiber,” Optical Society of America, vol. 21, October 2004.

    [90] J. R. Simpson, “Fabrication of Rare-Earth Doped Glass Fiber. In Fiber Laser Sources and Amplifiers II,” 2.SPIE Proceeding, Bellingham, WA:SPIE, no. 1171, 1990.

  • Metrics
Share - Bookmark