The almost equal height dual peak spontaneous Brillouin scattering spectrum of a piece of microstructure fiber with a small core was investigated at various temperatures using the heterodyne method. The central freque...The almost equal height dual peak spontaneous Brillouin scattering spectrum of a piece of microstructure fiber with a small core was investigated at various temperatures using the heterodyne method. The central frequencies of the two peaks increase linearly with increasing temperature with temperature coefficients of 1.05 MHz/℃ and 1.13 MHz/℃. The height difference between the two peaks decreases linearly with a coefficient of-0.06 dB/℃. The results show that microstructure fibers with a small core have great potential for fiber Brillouin distributed sensing.展开更多
基金the National Key Basic Research and Development (973) (No. 2003CB314904)the Science Foundation of Beijing (No. 4061003)the Basic Recearch Foundation of Tsinghua National Laboratory for Information Science and Technology (TNList)
文摘The almost equal height dual peak spontaneous Brillouin scattering spectrum of a piece of microstructure fiber with a small core was investigated at various temperatures using the heterodyne method. The central frequencies of the two peaks increase linearly with increasing temperature with temperature coefficients of 1.05 MHz/℃ and 1.13 MHz/℃. The height difference between the two peaks decreases linearly with a coefficient of-0.06 dB/℃. The results show that microstructure fibers with a small core have great potential for fiber Brillouin distributed sensing.
