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24 October 2005 Polymer wavelength division multiplexers based on bromo-fluorinated poly(arylene ether ketone)
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Photonic devices based on novel bromo-fluorinated poly(arylene ether ketone)s have been prepared. In these materials, the intrinsic optical losses at 1550 nm, due to the absorption of hydrocarbon bond overtone vibration, have been minimized by replacing H in the C-H bonds with Br or F, thereby shifting the overtone absorption to a longer wavelength. Typical optical slab losses of these materials are ~ 0.5 dB/cm at 1550 nm. In addition these materials have high thermal stability (5 wt% loss at temperature greater than 450°C), and are easily processed at temperatures lower than those previously reported for other poly(arylene ether)s (< 200°C). High quality waveguides have been fabricated using standard photolithographic processes. A thin film of silicon dioxide deposited by rf sputtering or e-beam evaporation on the polymer surface was used as a mask for reactive ion etching. Data on the design, fabrication and characterization of wide-band wavelength division multiplexers are reported. The devices exhibit on-chip losses of 7 dB including the fiber to chip coupling loss, output uniformity of ± 0.5dB and central wavelength thermal sensitivity lower than 0.06 nm/oC. Optimization of devices through material properties and fabrication process parameters is discussed.
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Jia Jiang, Claire L. Callender, Sarkis Jacob, Julian P. Noad, Yinghua Qi, Jianfu Ding, and Michael Day "Polymer wavelength division multiplexers based on bromo-fluorinated poly(arylene ether ketone)", Proc. SPIE 6014, Active and Passive Optical Components for WDM Communications V, 60141B (24 October 2005);

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