期刊
OPTICS EXPRESS
卷 17, 期 2, 页码 697-702出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.17.000697
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- MKE/IITA, Korea [2006-S-073-02]
We demonstrate sub-dB/cm propagation losses in polymer-based silver stripe waveguides at the wavelength of 1.31 mu m. The silver stripe waveguides were fabricated in a low-loss fluorinated polymer clad. To form uniform metal stripe patterns, which are essential for reducing propagation loss, we developed a lift-off process using double layers of photoresist and SiNx. A propagation loss of less than 1.0 dB/cm was obtained with the 11-nm-thick silver stripes in the width range of 1.5-4.5 mu m. A coupling loss of similar to 1.0 dB with a polarization maintaining single mode fiber was achieved for a width of 4.5 mu m. For a width of 2.0 mu m, we recorded a minimum propagation loss of 0.4 dB/cm, which is comparable with that of dielectric multi-mode waveguides. (C) 2008 Optical Society of America
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