A comparative study of the modal characteristics and waveguide dispersion of optical waveguides with three different closed loop cross-sectional boundaries

Authors: Singh, Vivek¹; Prasad, B²; Ojha, S P.²

Source: Optik – International Journal for Light and Electron Optics, Volume 115, Number 6, September 2004 , pp. 281-288(8)

Publisher: Urban & Fischer

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Abstract:

A comparative theoretical study of three optical waveguides with different core-cross sectional boundaries is presented. The boundary loops can be described by equation x^N + y^N = a^N, where N takes the values 1, 2/3 and 4. For N = 1, we have a circular boundary (standard fiber), for N = 2/3, the boundary is a hypocycloid and for N = 4, the boundary is a Piet-Hein curve. An attempt has been made to determine how the modal characteristics and waveguide dispersion change as the circular shape is changed to the hypocycloidal shape and the Piet Hein shape. It is found that the Piet-Hein shape combines the desirable characteristics of the circular and the rectangular waveguides.

Document Type: Research article

DOI: http://dx.doi.org/10.1078/0030-4026-00367

Affiliations: 1: Department of Applied Sciences, Vira College of Engineering, Bijnor-246701 U. P.: India 2: Department of Applied Physics, Institute of Technology, Banaras Hindu University, Varanasi-221005, U. P.: India

Publication date: 2004-09-01