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Design and fabrication of a three-dimensional polymer optical waveguide polarization splitter |
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| Authors: | Kaixin Chen PL Chu KS Chiang HP Chan |
| Institution: | Optoelectronics Research Centre, Department of Electronic Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China |
| Abstract: | We present a design and fabrication of a three-dimensional polymer optical waveguide polarization splitter by taking into consideration of the induced birefringence effect of the polymer. We show that it is not possible to couple TM light from one waveguide to the other but evanescent coupling for TE light is possible. Hence the polarization splitter can be designed by considering TE mode coupling alone. This has an advantage of short interaction length of the device. Based on this consideration, we fabricated a polarization splitter with a TE extinction ratio of 15 dB and TM extinction ratio of 21 dB. |
| Keywords: | Integrated optics Polymer waveguide Optical coupler Polarization splitter Vertical coupling |
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