Propagation characteristics of highly elliptical core optical waveguides: a perturbation approach

Long Period Gratings in New Generation Optical Fibers

“…The 2009 work, instead, is focused on the SRI sensitivity characteristics of metal-coated LPGs operating in the power coupling regime corresponding to dual spectral resonance within D-fiber by KVH. The authors used a simple and sufficiently accurate first-order perturbation model (Kumar & Varshney, 1984) and demonstrated that, by an optimum combination of metal thickness and core to flat surface separation, SRI sensitivity as high as 5971 nm/RIU (RIU -RI Unit) can be reached. The double-sided polished D-fiber LPG proposed by Tien et al in 2009 was first proposed as magnetic field sensor (Tien et al, 2009a).…”

A Simple Model of Dispersion in Step-Index Elliptical-Core Optical Fibers

“…For the elliptical-core, step-index case, the computational difficulties are even greater, involving infinite series of Matthieu functions. Approximate solutions have been proposed, [9,[12][13][14][15][16][17][18], but none of them have checked their results with experimental data, and almost all of them use as an accuracy reference only the cutoff wavelength of the second-order mode. For the design of two-mode waveguides and devices we need a good approximation not only for the cutoff value but also for the dispersion characteristics in the wavelength range of interest.…”

Power characteristics of dielectric optical Piet Hein waveguides

“…High-frequency scattering by arbitrarily shaped bodies is conventionally analyzed using physical optics (PO) augmented by physical theory of diffraction (PTD) [1][2][3][4][5]. Analysis of multiple bounce scattering phenomena by PO is referred to as iterative physical optics (IPO) [6] and requires multiple surface integrations.…”

“…Investigators have thus far presented varieties of optical waveguides with different forms of cross-sectional geometries [1][2][3][4][5][6][7][8]. Dielectric rectangular waveguides are also a category which finds prominent applications in integrated optic technology [9 -11].…”