[2] Ye Chenchun, Tatam R P. Acoustic-emission detection using Yb3+/Er-codoped fiber grating lasers. 16th International Conference on Optical Fiber Sensors, Nara Japan. 2003. 218~221
[3] Othonos A, Kalli K. Fiber Bragg Grating. London:Artech House, 1999. 198~200
[6] Agrawal G P, Bobeck A H. Modeling of distributed feedback semiconductor lasers with axially-varying parameters. IEEE J Quantum Electron, 1998, 24 (5):2407~2414