Theoretical Limit of Repeater Spacing in an Optical Transmission Line Utilizing Raman Amplification

Takashi Nakashima, Shigeyuki Seikai, Masataka Nakazawa, Yukiyasu Negishi

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

The limit of repeater spacing is investigated theoretically for optical transmission lines utilizing stimulated Raman scattering to amplify the signal light. Achievable repeater spacing is numerically estimated on the basis of coupled power equations and measured fiber characteristics for various signal wavelengths and relative index differences. Three types of transmission line configurations are considered, i.e., utilization of forward only, backward only, and bidirectional amplification. In the third case, a transmission distance of more than 400 km is predicted for an input signal light power of 100 μW, a signal wavelength of 1.57 μm, and a pump power of 0.5 W using a fiber with a relative index difference of 1 percent for signal light amplification.

Original languageEnglish
Pages (from-to)1267-1272
Number of pages6
JournalJournal of Lightwave Technology
Volume4
Issue number8
DOIs
Publication statusPublished - 1986 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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