Influence of optical fibers on the spectrum of transmitted light-emitting-diode radiation.
Propagation of Ga(x)In(1-x)As(y)P (1-y) light-emitting-diode radiation through an optical fiber was found to affect its spectral curve very strongly, and the origin of this effect was analyzed. Various kinds of fibers were found to induce interferencelike modulations superimposed on the smooth spontaneous spectral curve of the diodes. We were able to show that when a monomode polarization-preserving fiber is used, the modulations are mostly due to intermodal interference.
J
J
Zavadil
T
T
Honc
J
J
Ctyroký