1. You Min Chang, Junsu Lee, Young Min Jhon, Ju Han Lee, Active Q-switching in an erbium-doped fiber laser using an ultrafast silicon-based variable optical attenuator. Opt. Express 19, 26911 (2011)
2. E.M. Dianov, Bismuth-doped optical fibers: a challenging active medium for near-IR lasers and optical amplifiers. Light: Sci. Appl. 1, e12 (2012). doi:
10.1038/lsa.2012.12
3. A. Ghatak, K. Thyagarajan, Introduction to Fiber Optics, (Cambridge University Press, Cambridge, MA, 1998), Reprinted by Foundation Books, India, 1999
4. C. Kakkar, K. Thyagarajan, Segmented clad fiber design for tunable leakage loss. J. Lightwave Technol.-Spec. Issue Opt. Fiber Des. 23, 3444–3453 (2005)
5. C. Kakkar, G. Monnom, K. Thyagarajan, B. Dussardier, Inherently gain flattened L+ band TDFA based on W-fiber design. Optics Commun. 262, 193–199 (2006)