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Asymmetricity of Optical Phase Conjugation in Optical Transmission Links with Dispersion Management  

Lee, Seong-Real (Div. of Marine Electro. and Comm. Eng., Mokpo National Maritime University)
Yim, Hwang-Bin (Dept. of Information & Comm., Gangwon Provincial College)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.8A, 2010 , pp. 801-809 More about this Journal
Abstract
Limitation of optical phase conjugation for implementation of wideband and long-haul WDM transmission system is symmetric distribution of optical power and local dispersion with respect to optical phase conjugator (OPC). This limitation forces OPC to place at midway of total transmission length. This paper shows that the limitation of optical phase conjugation is overcame by applying optimal net residual dispersion (NRD) into transmission links based in inline dispersion management (DM). Optimal NRD related with OPC position is decided by combination of precompensation and postcompensation. It is confirmed that optimal NRD depends on launch power of WDM channels and system performance criterion as well as OPC position. That is, in case of 1 dB eye opening penaty (EOP) as a performance criterion for WDM channels with 0 dBm launch power, it is confirmed that OPC is allowed to place at anywhere of 1000 km by applying best NRD related with exact OPC position into transmission links. And, it is confirmed that, under 3 dB EOP criterioin for WDM channels with 3 dBm launch power, OPC is allowed to place at 350~700 km by applying NRD between 100 ps/nm and 200 ps/nm into transmission links, though that NRD value is not best combination of precompensation and postcompensation.
Keywords
Inline dispersion management; Optical Phase Conjugation; Net residual dispersion; Precompensation; Postcompensation; Group velocity dispersion; Kerr effects;
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Times Cited By KSCI : 6  (Citation Analysis)
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