With the use of the scalar field approximation a study has been made of a guide ha¨ing a shape of the lemniscate of Bernoulli as its cross section. This structure represents approximately the situation when two cores are embedded in the same cladding. This is often done in ( practice. In this case o
Numerical investigation of a trapezoidal cross-section ridge optical waveguide
β Scribed by Gong Yue-Jin; Lin De-Jun; Anthony D. Klemm
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 275 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0749-159X
No coin nor oath required. For personal study only.
β¦ Synopsis
The mode dispersion of trapezoidal cross-section narrow ridge dielectric optical waveguides is calculated by the Weighted Residual Method (WRM). In the sloping region, the field is expressed in terms of Airy functions, thus having no arbitrariness at the boundaries. The result is compared with previously reported experimental and theoretical results. Agreement between the experimental and the predicted results is good.
π SIMILAR VOLUMES
Using Goell's point-matching method under the weak guidance approximation, we obtain and interpret the modal dispersion cur¨es for some low-order modes sustained by an optical wa¨eguide whose guiding region has a double-con¨ex-lens-like cross section. It is found that the dispersion cur¨es are of th
an amplitude equal unit, modu-Ε½ .
Figure 5 CPU time for near-to far-field transformation on Digital Alpha Station 500 advantages of the presented method over the conventional spherical modal expansion method are that the analysis is simple, and it does give some physical insight into the radiation mechanism. In addition, it is fast
Figure 7 Plots of the transmission ratio T versus the half-branching angle A for the AGI structure with different values of refractive index n of the PFA 3 and the AGI structures are 7.8 and 9.3Π, respectively. The improvement in the angle is thus 1.5Π. For still lower n , 3 further improvement woul