Brillouin-gain spectra for single-mode fibers having pure-silica, GeO_2-doped, and P_2O_5-doped cores
- 1 April 1987
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 12 (4) , 269-271
- https://doi.org/10.1364/ol.12.000269
Abstract
Brillouin-gain spectra are measured for pure-silica core, GeO2-doped core, and P2O5-doped core single-mode fibers with different index profiles. A narrow-linewidth semiconductor laser operating at 828 nm is used as the pump light source. The spectral shape of the Brillouin gain is found to be strongly related to the refractive-index profiles. The Brillouin linewidths evaluated experimentally are 90 and 215 MHz for a step-index single-mode fiber and a graded-index single-mode fiber, respectively. The Brillouin Stokes shifts depend on the core/cladding dopant materials and their concentrations and range from 20 GHz for the P2O5-doped core fiber to 21.6 GHz for the pure-silica core fiber in the 0.8-μm-wavelength region.Keywords
This publication has 8 references indexed in Scilit:
- Spontaneous Brillouin scattering for single-mode optical-fibre characterisationElectronics Letters, 1986
- Crosstalk due to three-wave mixing process in a coherent single-mode transmission lineElectronics Letters, 1986
- Cancellation of fiber loss by semiconductor laser pumped Brillouin amplification at 1.5 μmApplied Physics Letters, 1986
- Coherent optical-fibre subscriber lineElectronics Letters, 1985
- Crosstalk due to stimulated Brillouin scattering in monomode fibreElectronics Letters, 1985
- Normal acoustic modes and Brillouin scattering in single-mode optical fibersPhysical Review B, 1979
- Evaluation of Fiber Optical Waveguides Using Brillouin SpectroscopyApplied Optics, 1974
- Weakly Guiding FibersApplied Optics, 1971