Nonlinear interferometer with independent optical pumping

G. L�pke, Gerd Marowsky, Robert Steinhoff

N. A. Ivanova, S. M. Karpuck, Alexander S. Rubanov +1 more

A scheme for control of the transfer function of a nonlinear Fabry-Perot interferometer (F-P) using an independent light beam (optical pumping), tuned in frequency to the absorption band from the excited level of resonant medium, has been suggested. The possibility of switching operating modes of the interferometer (differential amplification, discriminator, optical bistability) has been shown.

Preecha P. Yupapin, Suebtarkul Suchat

A new system for entangled photon-pair generation using an all-fiber optic scheme consists of a fiber optic Mach-Zehnder interferometer (MZI) incorporating a fiber optic ring resonator. The Kerr nonlinearity effect in the fiber ring resonator is exploited for the generation of two independent squeezed beams. The advantage of such a system is that it requires a simple arrangement without any optical pumping parts or bulky optical components. Polarized light pulse trains are launched randomly into a MZI, and one part of the light is delayed in the longer path. The output pulses from both arms of the MZI enter a fiber optic ring resonator. A polarization controller controls the polarization states of the light pulses while they circulate in the ring resonator. The superposition of the nonlinear light pulses in a fiber optic ring resonator randomly occur. These forms are seen on an avalanche photodetector. The results are in good agreement with previous work.

Bruce J. Bartholomew

Wolfgang Demtröder

Yu. I. Balkareǐ, V. B. Sandomirskiǐ

An analysis is made of the propagation of an optical wave parallel to reflecting planes in an extended nonlinear Fabry-Perot interferometer pumped by a strong wave of the same intensity. It is shown that the nonlinear-optics self-interaction of the first wave changes drastically near certain parts of the main experimental characteristic of the interferometer, which is the dependence of the intensity of the transmitted light on the intensity of the pump wave. The acoustooptic interaction can change similarly in this interferometer.