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Journal of the Optical Society of America B

Relation between the effective area of a single-mode fiber and the capture fraction of spontaneous Raman scattering

Roger H. Stolen

Published Mar 1, 2002• 15 citations
Publisher

Abstract

The spontaneous Raman capture fraction in a single-mode fiber is inversely related to the effective area of the fiber. This relation ties together classical and quantum approaches to stimulated Raman scattering in fibers and has implications for calculations of gain and noise in fiber Raman amplifiers. The relation between capture fraction and effective area is derived, first, by comparison of the classical and quantum treatments of spontaneous Raman scattering in a fiber and, second, by treatment of the source of the Raman scattered light as oscillating dipoles and calculation of the capture fraction of the dipole radiated power.

DOI
10.1364/josab.19.000498

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The spontaneous Raman capture fraction in a single-mode fiber is inversely related to the effective area of the fiber. This relation ties together classical and quantum approaches to stimulated Raman scattering in fibers and has implications for calculations of gain and noise in fiber Raman amplifiers. The relation between capture fraction and effective area is derived, first, by comparison of the classical and quantum treatments of spontaneous Raman scattering in a fiber and, second, by treatment of the source of the Raman scattered light as oscillating dipoles and calculation of the capture fraction of the dipole radiated power.
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