Title :
Experimental investigation of all-optical switching in fibre loop mirror device
Author :
Doran, N.J. ; Nayar, B.K.
Author_Institution :
British Telecom Res. Labs., Ipswich, UK
Abstract :
Nonlinear optical switching has been experimentally demonstrated in a monomode fibre loop mirror (Sagnac) interferometer using both Q-switched and CW-mode locked pulses of a Nd:YAG laser at 1.32 mu m. The switching crossover for a 25 m loop occurs at 22 W. It has been shown that incomplete switching occurs due to pulse shape effects. The presence of Raman scattering results in a step-like, rather than periodic, response.
Keywords :
light interferometers; optical bistability; optical fibres; 1.32 micron; 22 W; 25 m; CW-mode locked pulses; Nd:YAG laser; Q-switched pulses; Raman scattering; Sagnac; YAG:Nd; YAl5O12:Nd; all-optical switching; fibre loop mirror device; incomplete switching; interferometer; monomode fibre; nonlinear optical switching; pulse shape effects; step-like response; switching crossover;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890186
