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Proceedings Paper

Nonlinear phase shift scanning method for the optimal design of Raman transmission systems
Author(s): Jonghan Park; Jaehyoung Park; Namkyoo Park
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Paper Abstract

We present an efficient algorithm for the search of optimum design parameters and transmission quality factor (Q) for a Raman amplified transmission system. By treating the nonlinear phase shift (NPS) as the key parameter for the determination of secondary system parameters, and then scanning the nonlinear Schrödinger equation (NLSE) to get the optimum Q factor as a function of NPS only, we show that the multi-dimensional, multi-parameter, time-consuming design process can be reduced to a highly efficient semi-analytic, 1 dimensional numerical optimization problem. As an application example for the suggested algorithm, we determine the optimum system design parameters (input powers to SMF, DCF, distributed Raman gain, and forward Raman pumping ratio) and Q factor for a single channel 10 G bit/s 2000 km transmission link (SMF-DCF), and then study the effect of pump-relative-intensity-noise (RIN) and span length change to the optimum Q values and changes in the optimum design point. Results show a Q factor improvement for the system more than 1.16dB / 4.89dB at 100km / 200km span length with our design method, when compared to previous optimization method.

Paper Details

Date Published: 8 December 2005
PDF: 12 pages
Proc. SPIE 6021, Optical Transmission, Switching, and Subsystems III, 60211C (8 December 2005); doi: 10.1117/12.636335
Show Author Affiliations
Jonghan Park, Seoul National Univ. (South Korea)
Jaehyoung Park, Seoul National Univ. (South Korea)
Namkyoo Park, Seoul National Univ. (South Korea)

Published in SPIE Proceedings Vol. 6021:
Optical Transmission, Switching, and Subsystems III
Rodney S. Tucker; Dominique Chiaroni; Wanyi Gu; Ken-ichi Kitayama, Editor(s)

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