Acta Optica Sinica, Volume. 32, Issue 10, 1013001(2012)
Analysis on Performances of Several Polymer Bent Waveguide Based on Asymmetric Ridge Waveguide
In order to reduce length of the branch waveguide in Mach-Zehnder (M-Z) electro-optic modulator, the organic polymer ridge waveguide with asymmetric structure is applied in S-bend waveguide. Using the semi-vector finite-difference beam propagation method (FD-BPM), the transition loss of TM00 optical field is systematically studied in three conventional bend waveguides, namely sine-bend, arc-bend and cosine-bend, under different parameters, which is compared with the S-bend waveguide using symmetric ridge waveguide structure. The research results show that the lengths of sine, arc and cosine branch waveguides could be reduced by 40%, 30% and 25% respectively in the same transmission loss conditions, when the structure parameters are core height h=1.5 μm, ridge width w=4 μm, branch height G=11 μm and ridge height is 0.3 μm, in the case of short core width s≥2 μm. The results will have some reference value to the design of optical waveguide in M-Z modulator.
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Gao Yuan, Zhang Xiaoxia, Liao Jinkun. Analysis on Performances of Several Polymer Bent Waveguide Based on Asymmetric Ridge Waveguide[J]. Acta Optica Sinica, 2012, 32(10): 1013001
Category: Integrated Optics
Received: Mar. 31, 2012
Accepted: --
Published Online: Jul. 17, 2012
The Author Email: Yuan Gao (gaoy3582@163.com)