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Weak guidance modal dispersion curves of an optical waveguide having a double-convex-lens cross section

✍ Scribed by V. N. Mishra; V. Singh; B. Prasad; S. P. Ojha

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
108 KB
Volume
22
Category
Article
ISSN
0895-2477

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✦ Synopsis

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 the expected shapes. From these cur¨es, the number of sustained modes can be obtained for known ¨alues of the size parameter, the operating frequency, and the core and cladding refracti¨e indexes. This wa¨eguide may be concei¨ed as a distortion of the elliptical wa¨eguide with a trans¨erse compression at the major axis extremities.

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