1. Connelly MJ (2002) Semiconductor optical amplifiers. Boston: Springer, ISBN 978-0-7923-7657-6
2. Petit C, Blaser M (2006) Workshop on optical components for broadband communication. Fonjallaz P-Y, Pearsall T. P. (ed.), Proc. of SPIE. vol. 6350, 63500I
3. Ibrahim S, Luo LW, Djordjevic SS, Poitras CB, Zhou I, Fontaine NK, Guan B, Ding Z, Okamoto K, Lipson M and Yoo SJB (21 Mar 2010) paper OWJ5. Optical Fiber Communications Conference, OSA/OFC/NFOEC, San Diego
4. Randel S, Koonen AMJ, Lee SCJ, Breyer F, Garcia Larrode M, Yang J, Ng’Oma A, Rijckenberg GJ, Boom HPA (2007). ECOC 07 (Th 4.1.4). Berlin, Germany, pp. 1–4
5. Vieira M, Louro P, Fernandes M, Vieira MA, Fantoni A, Costa J (2011), Advances in Photodiodes, Gian Franco Dalla Betta (ed.), ISBN: 978-953-307-163-3, InTech, Chap.19, pp:403–425