[1] A. H. Hartog. An Introduction to Distributed Optical Fibre Sensors(2017).
[2] G. P. Agrawal. Nonlinear Fiber Optics(1995).
[8] K. Hotate, T. Hasegawa. Measurement of Brillouin gain spectrum distribution along an optical fiber using a correlation-based technique—proposal, experiment and simulation. IEICE Trans. Electron., E83-C, 405-412(2000).