[1] [1] Kashyap R, Armitage J R, Wyatt R et al.. All-fibre narrowband reflection gratings at 1500 nm. Electron. Lett., 1990, 26(11):730～732

[2] [2] Kringlebotn J T, Archambault J, Reekie L et al.. Highly efficient, low-noise grating-feedback Er3+:Yb3+ codoped fibre laser. Electron. Lett., 1994, 30(12):972～973

[3] [3] Kringlebotn J T, Morkel P R, Reekie L et al.. Efficient diode-pumped single-frequency erbium:Ytterbium fibre laser. IEEE Photon. Tech. Lett., 1993, 5(10):1162～1164

[4] [4] Ball G A, Hull-Allen C G, Livas J. Frequency noise of a Bragg grating fibre laser. Electron. Lett., 1994, 30(15):1229～1230

[5] [5] Ball G A, Morey W W. Continuously tuneable single-mode erbium fiber laser. Opt. Lett., 1992, 17(6):420～422

[6] [6] Massicott J, Lebre C, Kashyap R et al.. Low noise, all-optical gain controlled Er3+ doped fibre amplifier using asymmetric control laser cavity design. Electron. Lett., 1996, 32(9):816～818

[7] [7] Loh W H, Samson B N, Harutjunian Z E et al.. Intracavity pumping for increased output power from a distributed feedback erbium fibre laser. Electron. Lett., 1996, 32(13):1204～1205