SUB-POISSONIAN AND SUPER-POISSONIAN PHOTON STATISTICS IN A TWIN-CORE DOPED OPTICAL-FIBER

In this paper, we develop a quantum statistical theory of light propag ation in a twin-core doped optical fiber, The optical nonlinearity ind uced by the atomic dopants in the fiber dramatically modifies the quan tum fluctuations in the paraxial photon modes, We find that with appro priate arrangement of the device, the input light field with the usual Poissonian photon statistics can be transformed into sub- or super-Po issonian photon statistics, For the sub-Poissonian photon statistics, the quantum noise in the photon numbers in the paraxial modes is reduc ed below the level of the noise in the usual laser field,