Abstract

This paper investigates the impact of backreflection lights on upstream transmission in wavelength division multiplexing (WDM) single-fiber loopback access networks, where a WDM light source is located at the central office (CO) and each optical network unit (ONU) includes an optical modulator with optical amplifiers. This study considers backreflection lights from two sources, the continuous wave (CW) light at the CO (Reflection-I) and the modulated signal at the ONU (Reflection-II). It is confirmed, for the first time, that the impact of Reflection-II increases strongly with ONU gain. To estimate the impact of these backreflection lights, a simple intensity noise estimation scheme is presented. This scheme clarifies that the acceptable transmission line losses is 10 dB for 1.25 Gb/s under the optical return loss (ORL) of -32 dB.

© 2006 IEEE

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  1. J. Kani, M. Teshima, K. Akimoto, M. Ishii, N. Takachio and K. Iwatsuki, "Super-dense WDM access network for wide-area gigabit access services", in Proc. Int. Symp. Services and Local accesS (ISSLS), Seoul, Korea, 2002, pp. 277-283.
  2. L. Y. Chan, C. K. Chan, D. T. K. Tong, F. Tong and L. K. Chen, "Upstream traffic transmitter using injection-locked Fabry-Pérot laser diode as modulator for WDM access networks", Electron. Lett., vol. 38, no. 1, pp. 43-45, Jan. 2002.
  3. T. Maekawa, M. Okayasu and K. Wakita, "Bidirectional transmission experiment employing a single light source and waveguide-type modulator", in Proc. 8th Int. Workshop Optical/Hybrid Acess Networks (OAN), Atlanta, GA, 1997.
  4. M. Feuer, M. Thomas and L. Lunardi, "Backreflection and loss in single-fiber loopback networks", IEEE Photon. Technol. Lett., vol. 12, no. 8, pp. 1106-1108, Aug. 2000.
  5. N. Buldawoo, S. Mottet, H. Dupont, D. Sigogne and D. Meichenin, "Transmission experiment using a laser amplifier-reflector for DWDM access network", in Proc. Eur. Conf. Optical Communication (ECOC), vol. 1, Madrid, Spain, 1998, pp. 273-274.
  6. M. Feuer, J. Wiesenfeld, J. Perino, C. Burrus, G. Raybon, S. Shunk and N. Dutta, "Single-port laser-amplifier modulators for local access", IEEE Photon. Technol. Lett., vol. 8, no. 9, pp. 1175-1177, Sep. 1996.
  7. N. Buldawoo, S. Mottet, F. Gall, D. Sigogne, D. Meichenin and S. Chelles, "A semiconductor laser amplifier-reflector for the future FTTH applications", in Proc. Eur. Conf. Optical Communication (ECOC), vol. 2, Edinburgh, U.K., 1997, pp. 196-199.
  8. H. Suzuki, H. Nakamura, J. Kani and K. Iwatsuki, "A carrier-distributed wide-area WDM-based passive optical network (WDM-PON) accommodating 10 gigabit Ethernet-based VPN services", presented at the Eur. Conf. Optical Communication (ECOC), Stockholm, Sweden,Tu4.6.3, 2004.
  9. K. Asaka, Y. Suzaki, Y. Kawaguchi, S. Kondo, Y. Noguchi, H. Okamoto, R. Iga and S. Oku, "Lossless electroabsorption modulator monolithically integrated with a semiconductor optical amplifier and a passive waveguide", IEEE Photon. Technol. Lett., vol. 15, no. 5, pp. 679-681, May 2003.
  10. J. Gimlett and N. Cheng, "Effects of phase-to-intensity noise conversion by multiple reflections on gigabit-per-second DFB laser transmission systems", J. Lightw. Technol., vol. 7, no. 6, pp. 888-895, Jun. 1989.
  11. H. Takahashi, K. Oda and H. Toba, "Impact of crosstalk in an arrayed-waveguide multiplexer on N× N optical interconnection", J. Lightw. Technol., vol. 14, no. 6, pp. 1097-1105, Jun. 1996.
  12. N. Bergano, F. Kerfoot and C. Davidson, "Margin measurements in optical amplifier systems", IEEE Photon. Technol. Lett., vol. 5, no. 3, pp. 304-306, Mar. 1993.
  13. ITU-T Recommendation G. 983.3, "Broadband Optical Access Systems Based on Passive Optical Networks",

Other (13)

J. Kani, M. Teshima, K. Akimoto, M. Ishii, N. Takachio and K. Iwatsuki, "Super-dense WDM access network for wide-area gigabit access services", in Proc. Int. Symp. Services and Local accesS (ISSLS), Seoul, Korea, 2002, pp. 277-283.

L. Y. Chan, C. K. Chan, D. T. K. Tong, F. Tong and L. K. Chen, "Upstream traffic transmitter using injection-locked Fabry-Pérot laser diode as modulator for WDM access networks", Electron. Lett., vol. 38, no. 1, pp. 43-45, Jan. 2002.

T. Maekawa, M. Okayasu and K. Wakita, "Bidirectional transmission experiment employing a single light source and waveguide-type modulator", in Proc. 8th Int. Workshop Optical/Hybrid Acess Networks (OAN), Atlanta, GA, 1997.

M. Feuer, M. Thomas and L. Lunardi, "Backreflection and loss in single-fiber loopback networks", IEEE Photon. Technol. Lett., vol. 12, no. 8, pp. 1106-1108, Aug. 2000.

N. Buldawoo, S. Mottet, H. Dupont, D. Sigogne and D. Meichenin, "Transmission experiment using a laser amplifier-reflector for DWDM access network", in Proc. Eur. Conf. Optical Communication (ECOC), vol. 1, Madrid, Spain, 1998, pp. 273-274.

M. Feuer, J. Wiesenfeld, J. Perino, C. Burrus, G. Raybon, S. Shunk and N. Dutta, "Single-port laser-amplifier modulators for local access", IEEE Photon. Technol. Lett., vol. 8, no. 9, pp. 1175-1177, Sep. 1996.

N. Buldawoo, S. Mottet, F. Gall, D. Sigogne, D. Meichenin and S. Chelles, "A semiconductor laser amplifier-reflector for the future FTTH applications", in Proc. Eur. Conf. Optical Communication (ECOC), vol. 2, Edinburgh, U.K., 1997, pp. 196-199.

H. Suzuki, H. Nakamura, J. Kani and K. Iwatsuki, "A carrier-distributed wide-area WDM-based passive optical network (WDM-PON) accommodating 10 gigabit Ethernet-based VPN services", presented at the Eur. Conf. Optical Communication (ECOC), Stockholm, Sweden,Tu4.6.3, 2004.

K. Asaka, Y. Suzaki, Y. Kawaguchi, S. Kondo, Y. Noguchi, H. Okamoto, R. Iga and S. Oku, "Lossless electroabsorption modulator monolithically integrated with a semiconductor optical amplifier and a passive waveguide", IEEE Photon. Technol. Lett., vol. 15, no. 5, pp. 679-681, May 2003.

J. Gimlett and N. Cheng, "Effects of phase-to-intensity noise conversion by multiple reflections on gigabit-per-second DFB laser transmission systems", J. Lightw. Technol., vol. 7, no. 6, pp. 888-895, Jun. 1989.

H. Takahashi, K. Oda and H. Toba, "Impact of crosstalk in an arrayed-waveguide multiplexer on N× N optical interconnection", J. Lightw. Technol., vol. 14, no. 6, pp. 1097-1105, Jun. 1996.

N. Bergano, F. Kerfoot and C. Davidson, "Margin measurements in optical amplifier systems", IEEE Photon. Technol. Lett., vol. 5, no. 3, pp. 304-306, Mar. 1993.

ITU-T Recommendation G. 983.3, "Broadband Optical Access Systems Based on Passive Optical Networks",

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