Reflection and transmission calculations in a multilayer structure with coherent, incoherent, and partially coherent interference, using the transmission line method.

A generalized transmission line method (TLM) that provides reflection and transmission calculations for a multilayer dielectric structure with coherent, partial coherent, and incoherent layers is presented. The method is deployed on two different application fields. The first application of the method concerns the thickness measurement of the individual layers of an organic light-emitting diode.

Reflectivity properties of an anisotropic slab waveguide with isolated substrate.

The scattering properties for both TE and TM modes of an abruptly ended two-layered slab waveguide with anisotropic core and isolated substrate are examined by an improved iteration technique, which is based on the integral equation method with accelerating parameters. The relative dielectric constants of the core for the three Cartesian directions are considered to be different, but cases with isotropic core are also considered. The electric field distribution on the terminal plane and the reflection coefficients of the dominant TE and TM guided modes, as well as the near-field distribution and the far-field radiation pattern, are computed, while numerical results are presented for several cases of the core anisotropy.

All-fiber optic intensity modulators using liquid crystals.

A novel configuration for single-mode all-fiber optic, liquid crystal based intensity modulation is suggested. The electrodes have the form of two thin indium tin oxide films, one of which is directly deposited on top of the polished face of the optical fiber. Intensity modulation using nematic and ferroelectric liquid crystal is demonstrated showing that the device offers the potential for low loss (<0.

Polarization mode coupling in highly birefringent optical-fiber ring resonators.

The transmission characteristics of a polarization-maintaining optical-fiber ring resonator are examined. The resonator's response is found to be strongly dependent on the differential phase delay between the fiber birefringence axes. Large cross talk of as much as 40% between the fiber modes and splitting of the resonance notch can occur, even for very good (better than -35-dB) isolation between the fiber polarization modes.

Dynamic response of an all-fiber ring resonator.

An analysis of the dynamic response of a single-mode all-fiber ring resonator is presented in which a time-varying phase shift is induced in the ring by a phase modulator. In particular, the deviation of the response from that expected from the steady-state analysis is discussed.