S.W. Bang

Publications (4)0 Total impact

• Conference Proceeding: Analysis of Nonlinear Phenomena for Optical Soliton Transmission in DWDM Systems

  S. W. Bang, D. G. Daut
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  ABSTRACT: The key feature of optical soliton transmission is the capability of pulses to maintain their shape even when transmitted over very long distance. However, the optical soliton technique in DWDM systems is difficult to use because of optical fiber nonlinearities. CPM leads to spectral broadening and FWM may result in significant crosstalk among the channels. Understanding the effects optical fiber nonlinearities is crucial in order to optimize system performance. In this study, the effects of optical fiber nonlinearities are evaluated in conjunction with various EDFA gain ratios in 16 channel and 32 channel optical soliton transmission systems.
  Sarnoff Symposium, 2006 IEEE; 04/2006
• Conference Proceeding: Analysis of CPM and FWM phenomena for various signaling formats in 16 channel DWDM

  S.W. Bang, D.G. Daut
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  ABSTRACT: CPM and FWM are significant nonlinear optical effects in DWDM systems. CPM leads to spectral broadening which may cause severe pulse distortion. While FWM is a nonlinear interaction that can occur between several channels of different wavelengths. FWM may result in significant crosstalk among the channels in DWDM systems. Understanding fiber nonlinearities is crucial in order to optimize system performance. The effects of CPM and FWM in conjunction with various signaling formats in 16 channel systems are evaluated.
  Internet, 2005.The First IEEE and IFIP International Conference in Central Asia on; 10/2005
• Conference Proceeding: Improved system performance in DWDM networks using a selective filter assignment process

  S.W. Bang, D.G. Daut
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  ABSTRACT: In conventional optical data transmission schemes, electrical filters and/or optical filters are used to improve the quality of system performance. In this paper, improved design of dense wavelength division multiplexing (DWDM) optical systems is achieved by using a selective electrical filter assignment method. The methodology objective is to optimize system design and mitigate the effects of fiber nonlinearities through the use of electrical filters. A feature of this scheme is that it selectively inserts or deletes lowpass filters (LPFs) within the transmission link. Using the selective filter assignment (SFA) process in conjunction with non-return to zero (NRZ) and optical soliton signaling formats, the overall system performance of DWDM networks is shown to be improved.
  Sarnoff Symposium, 2007 IEEE;
• Conference Proceeding: Comparison between NRZ and soliton transmission with fiber nonlinearities in DWDM systems

  S.W. Bang, D.G. Daut
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  ABSTRACT: Effects of CPM and FWM phenomena are quantitatively evaluated in conjunction with NRZ and optical soliton transmission formats in DWDM systems. CPM leads to spectral broadening which may cause severe pulse distortion. While FWM may result in significant crosstalk among the optical channels. To improve system performance, understanding nonlinear optical effects in long-haul transmission systems is important. In this paper, we investigate both the Q-factor performance of CPM effects and the generated FWM power for a 32 channel DWDM transmission system using NRZ and optical soliton signals
  Wireless and Optical Communications Networks, 2006 IFIP International Conference on;