The theory of all-fiber optical switch based on stimulated Raman scatt
ering in a fiber loop mirror is described. A model has been developed
to predict the transfer function of the loop as a function of a fiber
core composition. Such a switch combines optical switching and amplifi
cation in a single device. A switching pulse energy of about 1 pJ at w
avelength of 1550 nm is predicted for the Raman switch. (C) 1998 Acade
mic Press.