FM-AM conversion by material dispersion in an optical fiber.
We show that material and guide dispersion may be used effectively in an optical fiber to convert an FM signal to an AM signal after it traverses a certain minimum fiber length. This length depends on material and modal dispersion of the guide. An upper limit to the fiber length is established and is shown to be related to laser linewidth. We also discuss laser-mode selection and conversion in multimode fibers.
Bochove
E J
EJ
de Carvalho
E M
EM
Filho
J E
JE