Single mode propagation is an important requirement for optical waveguide devices for use with single-mode fiber, it can reduce the coupling loss. In this paper, a technique is used for calculating the field distribution of the polymeric Y-junction rib waveguide. The technique is based on the combination of the effective index method(EIM) and the variational method(VM). It is mixed between the advantages of each method and avoided their disadvantages, where EIM can make the calculations procedures simple but it has some difficult to find the field distribution, other wise, VM can be used with very good accuracy to find the field distribution. An algorithm is implemented to study the effect of the structure parameters on the field distribution of the polymeric Y-junction rib waveguide. In our simulation, the core layer is PU-FTC (n=1.65@1.3μm),the cladding layers were NOA73 (n=1.54@1.3μm) and Epoxylite9653 (n=1.54@1.3μm). The obtained single mode rid waveguide structure parameters are: the core thickness is 1.5μm, the rib height is 0.2μm, the rib width is 5μm.

Date Published: 8 January 2008
PDF: 7 pages
Proc. SPIE 6838, Optoelectronic Devices and Integration II, 68381N (8 January 2008); doi: 10.1117/12.755736

Published in SPIE Proceedings Vol. 6838:
Optoelectronic Devices and Integration II
Xuping Zhang; Hai Ming; Maggie Yihong Chen, Editor(s)