The effects of pump phase modulation on noise characteristics of fiber optical parametric amplifiers M. Gao, C. Jiang, W. Hu, J. Wang and H. Ren Eur. Phys. J. D, 40 3 (2006) 431-436 Published online: 18 July 2006 DOI: 10.1140/epjd/e2006-00171-6